10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)
☒	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2020

or
☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	FOR THE TRANSITION PERIOD FROM TO
	COMMISSION FILE NUMBER	001-38629

EQUITRANS MIDSTREAM CORPORATION

(Exact name of registrant as specified in its charter) 

Pennsylvania	83-0516635
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)

2200 Energy Drive, Canonsburg, Pennsylvania     15317

(Address of principal executive offices)     (Zip code)

(724) 271-7600

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, no par value	ETRN	New York Stock Exchange

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒  No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒  No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.  See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	☒	Accelerated Filer	☐	Emerging Growth Company	☐
Non-Accelerated Filer	☐	Smaller Reporting Company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

 Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).        Yes  ☐  No  ☒

As of October 31, 2020, 432,470 shares of common stock (in thousands), no par value, and 30,018 shares of Series A Perpetual Convertible Preferred Stock (in thousands), no par value, of the registrant were outstanding.

EQUITRANS MIDSTREAM CORPORATION

Index

			Page No.
Glossary of Commonly Used Terms, Abbreviations and Measurements			3
Part I.	Financial Information:
Item 1.		Financial Statements (Unaudited):
		Statements of Consolidated Comprehensive Income for the Three and Nine Months Ended September 30, 2020 and 2019	5
		Statements of Consolidated Cash Flows for the Nine Months Ended September 30, 2020 and 2019	7
		Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019	8
		Statements of Consolidated Equity and Mezzanine Equity for the Three and Nine Months Ended September 30, 2020 and 2019	10
		Notes to Consolidated Financial Statements	12
Item 2.		Management's Discussion and Analysis of Financial Condition and Results of Operations	35
Item 3.		Quantitative and Qualitative Disclosures About Market Risk	53
Item 4.		Controls and Procedures	56
Part II.	Other Information:
Item 1.		Legal Proceedings	57
Item 1A.		Risk Factors	61
Item 2.		Unregistered Sales of Equity Securities and Use of Proceeds	66
Item 6.		Exhibits	67
Signature			68

2

EQUITRANS MIDSTREAM CORPORATION

Glossary of Commonly Used Terms, Abbreviations and Measurements

Allowance for Funds Used During Construction (AFUDC) – carrying costs for the construction of certain long-lived regulated assets are capitalized and amortized over the related assets' estimated useful lives. The capitalized amount for construction of regulated assets includes interest cost and a designated cost of equity for financing the construction of these regulated assets.

Appalachian Basin – the area of the United States composed of those portions of West Virginia, Pennsylvania, Ohio, Maryland, Kentucky and Virginia that lie in the Appalachian Mountains.

associated gas – natural gas that is produced as a byproduct of principally oil production activities.

British thermal unit – a measure of the amount of energy required to raise the temperature of one pound of water one-degree Fahrenheit.

EQGP – EQGP Holdings, LP (formerly known as EQT GP Holdings, LP) and its subsidiaries.

EQM – EQM Midstream Partners, LP (formerly known as EQT Midstream Partners, LP) and its subsidiaries.

EQT – EQT Corporation (NYSE: EQT) and its subsidiaries.

EQT Global GGA – that certain Gas Gathering and Compression Agreement entered into on February 26, 2020 (the EQT Global GGA Effective Date) by the Company (through EQM) with EQT and certain affiliates of EQT for the provision of certain gas gathering services to EQT in the Marcellus and Utica Shales of Pennsylvania and West Virginia, as subsequently amended.

firm contracts – contracts for gathering, transmission, storage and water services that reserve an agreed upon amount of pipeline or storage capacity regardless of the capacity used by the customer during each month, and generally obligate the customer to pay a fixed, monthly charge.

firm reservation fee revenues – contractually obligated revenues that include fixed monthly charges under firm contracts and fixed volumetric charges under MVC (defined below) contracts.

gas – natural gas.

Minimum volume commitments (MVC or MVCs) – contracts for gathering or water services that obligate the customer to pay for a fixed amount of volumes daily, monthly, annually or over the life of the contract.

Mountain Valley Pipeline (MVP) – an estimated 300 mile, 42-inch diameter natural gas interstate pipeline with a targeted capacity of 2.0 Bcf per day that will span from the Company's existing transmission and storage system in Wetzel County, West Virginia to Pittsylvania County, Virginia, providing access to the growing Southeast demand markets.

Mountain Valley Pipeline, LLC (MVP Joint Venture) – a joint venture among the Company and, as applicable, affiliates of each of NextEra Energy, Inc., Consolidated Edison, Inc. (Con Edison), AltaGas Ltd. and RGC Resources, Inc. that is constructing the MVP and the MVP Southgate (defined below) projects.

MVP Southgate – a proposed 75-mile interstate pipeline that will extend from the MVP at Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina.

Preferred Interest – the preferred interest that the Company has in EQT Energy Supply, LLC (EES), a subsidiary of EQT.

throughput – the volume of natural gas transported or passing through a pipeline, plant, terminal or other facility during a particular period.

Water Services Letter Agreement – that certain letter agreement entered into on February 26, 2020 by the Company (through EQM) and EQT, pursuant to which EQT agreed to utilize the Company for the provision of water services in Pennsylvania under existing water services agreements and new water services agreements if negotiated between the parties.

wellhead – the equipment at the surface of a well used to control the well's pressure and the point at which the hydrocarbons and water exit the ground. 

3

Unless context otherwise requires, a reference to a “Note” herein refers to the accompanying Notes to Consolidated Financial Statements contained in "Item 1. Financial Statements."

Abbreviations	Measurements
ASC – Accounting Standards Codification	Btu = one British thermal unit
ASU – Accounting Standards Update	BBtu = billion British thermal units
FASB – Financial Accounting Standards Board	Bcf   = billion cubic feet
FERC – U.S. Federal Energy Regulatory Commission	Mcf = thousand cubic feet
GAAP – United States Generally Accepted Accounting Principles	MMBtu = million British thermal units
IDRs – incentive distribution rights	MMcf  = million cubic feet
NYMEX – New York Mercantile Exchange	MMgal  = million gallons
NYSE – New York Stock Exchange
SEC – U.S. Securities and Exchange Commission

4

PART I.  FINANCIAL INFORMATION

Item 1. Financial Statements

EQUITRANS MIDSTREAM CORPORATION

 Statements of Consolidated Comprehensive Income (Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands, except per share amounts)
Operating revenues (a)	$	350,000	$	408,434	$	1,143,703	$	1,204,383
Operating expenses:
Operating and maintenance (a)	33,905		43,021		113,990		117,460
Selling, general and administrative (a)	31,626		24,151		94,186		83,553
Separation and other transaction costs	984		256		23,797		24,606
Depreciation	66,772		59,460		191,271		166,730
Amortization of intangible assets	16,204		14,540		46,990		38,677
Impairments of long-lived assets (b)	—		305,459		55,581		385,594
Total operating expenses	149,491		446,887		525,815		816,620
Operating income (loss)	200,509		(38,453)		617,888		387,763
Equity income (c)	60,917		44,448		171,233		112,293
Other income (d)	21,864		70		39,006		2,637
Loss on early extinguishment of debt (e)	—		—		24,864		—
Net interest expense (a)	86,411		65,606		219,960		188,268
Income (loss) before income taxes	196,879		(59,541)		583,303		314,425
Income tax expense	28,440		1,948		81,846		45,868
Net income (loss)	168,439		(61,489)		501,457		268,557
Net income attributable to noncontrolling interests	3,973		4,336		210,765		203,562
Net income (loss) attributable to Equitrans Midstream	164,466		(65,825)		290,692		64,995
Preferred dividends (f)	14,628		—		44,132		—
Net income (loss) attributable to Equitrans Midstream common shareholders	$	149,838	$	(65,825)	$	246,560	$	64,995
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders - basic (g)	$	0.35	$	(0.26)	$	0.78	$	0.26
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders - diluted (g)	$	0.35	$	(0.26)	$	0.78	$	0.25
Weighted average common shares outstanding - basic	432,773		254,915		314,411		254,868
Weighted average common shares outstanding - diluted	432,821		254,915		314,411		254,887
Statement of comprehensive income (loss):
Net income (loss)	$	168,439	$	(61,489)	$	501,457	$	268,557
Other comprehensive income (loss), net of tax:
Pension and other post-retirement benefits liability adjustment, net of tax expense of $10, $7, $30 and $22	30		21		90		(252)
Other comprehensive income (loss)	30		21		90		(252)
Comprehensive income (loss)	168,469		(61,468)		501,547		268,305
Less: Comprehensive income attributable to noncontrolling interests	3,973		4,336		210,765		203,562
Less: Comprehensive income attributable to preferred dividends (f)	14,628		—		44,132		—
Comprehensive income (loss) attributable to Equitrans Midstream common shareholders	$	149,868	$	(65,804)	$	246,650	$	64,743
Dividends declared per common share	$	0.15	$	0.45	$	0.45	$	1.35

5

(a)Includes related party activity with EQT. See Note 7.

(b)See Note 4 for disclosure regarding impairments of long-lived assets.

(c)Represents equity income from the MVP Joint Venture. See Note 8.

(d)See Note 10 for disclosures regarding derivative instruments.

(e)See Note 9 for disclosure regarding loss on early extinguishment of debt.

(f)See Notes 2 and 11 for disclosures regarding the Equitrans Midstream Preferred Shares (as defined in Note 1).

(g)See Note 11 for disclosure regarding the Company's calculation of net income per share of common stock (basic and diluted).

The accompanying notes are an integral part of these consolidated financial statements.

6

EQUITRANS MIDSTREAM CORPORATION

Statements of Consolidated Cash Flows (Unaudited)

	Nine Months Ended September 30,
	2020		2019
	(Thousands)
Cash flows from operating activities:
Net income	$	501,457	$	268,557
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	191,271		166,730
Amortization of intangible assets	46,990		38,677
Deferred income taxes	79,415		45,868
Impairments of long-lived assets (Note 4)	55,581		385,594
Equity income (Note 8)	(171,233)		(112,293)
Other income	(38,403)		(3,866)
Loss on early extinguishment of debt	24,864		—
Share-based compensation plans	9,388		1,900
Changes in other assets and liabilities:
Accounts receivable	(11,021)		28,773
Accounts payable	3,151		(72,369)
Accrued interest	(5,592)		(39,103)
Deferred revenue	148,770		—
Other assets and other liabilities	(10,443)		(17,999)
Net cash provided by operating activities	824,195		690,469
Cash flows from investing activities:
Capital expenditures	(377,592)		(769,937)
Capital contributions to the MVP Joint Venture	(144,264)		(512,852)
Bolt-on Acquisition (as defined in Note 3), net of cash acquired	—		(837,231)
Principal payments received on the Preferred Interest	3,726		3,471
Net cash used in investing activities	(518,130)		(2,116,549)
Cash flows from financing activities:
Proceeds from revolving credit facility borrowings	1,965,000		1,969,000
Payments on revolving credit facility borrowings	(2,080,000)		(2,325,500)
Proceeds from the issuance of long-term debt	1,600,000		1,400,000
Debt issuance costs and credit facility origination fees	(26,720)		(2,563)
Payment for retirement of long-term debt	(594,000)		(32,825)
Redemption of EQM Series A Preferred Units (as defined in Note 1)	(617,338)		—
Distributions paid to noncontrolling interest EQM unitholders	(128,770)		(285,834)
Distributions paid to holders of EQM Series A Preferred Units (as defined in Note 1)	(61,931)		(22,979)
Dividends paid to holders of Equitrans Midstream Preferred Shares	(2,251)		—
Dividends paid to common shareholders	(213,524)		(333,493)
Cash Shares and Cash Amount (as defined in Note 6)	(52,323)		—
Purchase of EQGP Common Units (as defined in Note 2)	—		(238,455)
Proceeds from issuance of EQM Series A Preferred Units, net of offering costs	—		1,158,313
Net cash (used in) provided by financing activities	(211,857)		1,285,664
Net change in cash and cash equivalents	94,208		(140,416)
Cash and cash equivalents at beginning of period	88,322		294,172
Cash and cash equivalents at end of period	$	182,530	$	153,756
Cash paid during the period for:
Interest, net of amount capitalized	$	221,918	$	223,257
Non-cash activity during the period for:
Issuance of Equitrans Midstream common stock pursuant to the EQM Merger (as defined in Note 1), net of tax	$	2,736,229	$	—
Issuance of Equitrans Midstream Preferred Shares pursuant to the Restructuring Agreement (as defined in Note 1)	667,214		—
Contract liability	121,483		—

The accompanying notes are an integral part of these consolidated financial statements.

7

EQUITRANS MIDSTREAM CORPORATION

Consolidated Balance Sheets (Unaudited) 

	September 30, 2020		December 31, 2019
	(Thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	182,530	$	88,322
Accounts receivable (net of allowance for credit losses of $3,609 and allowance for doubtful accounts of $285 as of September 30, 2020 and December 31, 2019, respectively) (a)(b)	263,657		255,344
Other current assets (a)	86,855		31,546
Total current assets	533,042		375,212
Property, plant and equipment	8,782,420		8,583,124
Less: accumulated depreciation	(943,687)		(859,157)
Net property, plant and equipment	7,838,733		7,723,967
Investment in unconsolidated entity	2,722,081		2,324,108
Goodwill	486,698		486,698
Net intangible assets	732,795		797,439
Deferred income tax asset	—		90,597
Other assets (a)	317,331		243,688
Total assets	$	12,630,680	$	12,041,709
LIABILITIES, MEZZANINE EQUITY AND SHAREHOLDERS' EQUITY
Current liabilities:
Current portion of revolving credit facility borrowings and long-term debt (c)	$	302,500	$	6,000
Accounts payable	101,134		128,114
Capital contributions payable to the MVP Joint Venture	127,626		45,150
Accrued interest	67,863		73,455
Accrued liabilities	73,187		83,238
Total current liabilities	672,310		335,957
Long-term liabilities:
Revolving credit facility borrowings (d)	485,000		902,500
Long-term debt	6,440,628		5,421,983
Contract liability (e)	321,775		—
Deferred income tax liability	293,583		—
Regulatory and other long-term liabilities	95,889		99,189
Total liabilities	8,309,185		6,759,629
Mezzanine equity:
Equitrans Midstream Preferred Shares, 30,018 and 0 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively (f)	681,842		—
Shareholders' equity:
Common stock, no par value, 432,470 and 254,745 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	3,955,934		1,292,804
Retained deficit	(781,363)		(618,062)
Accumulated other comprehensive loss	(1,936)		(2,026)
Total common shareholders' equity	3,172,635		672,716
Noncontrolling interests	467,018		4,609,364
Total shareholders' equity	3,639,653		5,282,080
Total liabilities, mezzanine equity and shareholders' equity	$	12,630,680	$	12,041,709

(a)Includes related party activity with EQT. See Note 7.

(b)See Note 1 for a discussion of the adoption of ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.

(c)Includes aggregate borrowings outstanding on the Eureka Credit Facility (as defined in Note 9) as of September 30, 2020. See Note 9 for further detail.

(d)Includes aggregate borrowings outstanding on the Amended EQM Credit Facility (as defined in Note 9) as of September 30, 2020. As of December 31, 2019, the Company had aggregate borrowings outstanding of approximately $610 million and $293 million on the

8

Amended EQM Credit Facility and the Eureka Credit Facility, respectively. The Company had no borrowings outstanding under the Equitrans Midstream Credit Facility as of December 31, 2019. See Note 9 for further detail.

(e)See Note 6 for disclosure regarding the Company's contract liabilities.

(f)See Note 2 for disclosures regarding the Equitrans Midstream Preferred Shares.

The accompanying notes are an integral part of these consolidated financial statements.

9

EQUITRANS MIDSTREAM CORPORATION

Statements of Consolidated Shareholders' Equity and Mezzanine Equity (Unaudited)

	Common Stock
						Accumulated
				Retained		Other
	Shares	No		Earnings		Comprehensive		Noncontrolling		Total
	Outstanding	Par Value		(Deficit)		Loss		Interests		Equity
	(Thousands, except per share and unit amounts)
Balance at January 1, 2019	254,271	$	425,370	$	33,932	$	(1,509)	$	4,801,840	$	5,259,633
Other comprehensive income (net of tax):
Net income	—	—		56,299		—		143,267		199,566
Pension and other post-retirement benefits liability adjustment, net of tax expense of $8	—	—		316		(295)		—		21
Dividends ($0.41 per share)	—	—		(104,251)		—		—		(104,251)
Share-based compensation plans	413	853		—		—		255		1,108
Distributions paid to noncontrolling interest unitholders ($1.13 per common unit for EQM)	—	—		—		—		(94,030)		(94,030)
Purchase of EQGP Common Units	—	(38,648)		—		—		(199,807)		(238,455)
Net changes in ownership of consolidated entities (See Note 2)	—	991,098		—		—		(1,337,641)		(346,543)
Balance at March 31, 2019	254,684	$	1,378,673	$	(13,704)	$	(1,804)	$	3,313,884	$	4,677,049
Other comprehensive income (net of tax):
Net income	—	—		74,521		—		55,959		130,480
Pension and other post-retirement benefits liability adjustment, net of tax expense of $7	—	—		—		22		—		22
Dividends ($0.45 per share)	—	—		(114,608)		—		—		(114,608)
Share-based compensation plans	7	1,510		—		—		—		1,510
Distributions paid to noncontrolling interest unitholders ($1.145 per common unit for EQM)	—	—		—		—		(95,278)		(95,278)
Issuance of EQM Series A Preferred Units, net of offering costs	—	—		—		—		1,158,313		1,158,313
Bolt-on Acquisition	—	—		—		—		486,062		486,062
Net changes in ownership of consolidated entities	—	1,627		—		—		—		1,627
Balance at June 30, 2019	254,691	$	1,381,810	$	(53,791)	$	(1,782)	$	4,918,940	$	6,245,177
Other comprehensive income (net of tax):
Net income (loss)	—	—		(65,825)		—		4,336		(61,489)
Pension and other post-retirement benefits liability adjustment, net of tax expense of $7	—	—		—		21		—		21
Dividends ($0.45 per share)	—	—		(114,634)		—		—		(114,634)
Share-based compensation plans, net	53	(718)		—		—		—		(718)
Distributions paid to noncontrolling interest unitholders ($1.160 per common unit for EQM)	—	—		—		—		(96,526)		(96,526)
Distribution paid to EQM Series A Preferred unitholders ($0.9339 per unit)	—	—		—		—		(22,979)		(22,979)
Bolt-on Acquisition measurement period adjustments (Note 3)	—	—		—		—		(7,602)		(7,602)
Balance at September 30, 2019	254,744	$	1,381,092	$	(234,250)	$	(1,761)	$	4,796,169	$	5,941,250

10

												Mezzanine
												Equity
	Common Stock
						Accumulated						Equitrans
				Retained		Other						Midstream
	Shares	No		Earnings		Comprehensive		Noncontrolling		Total		Preferred
	Outstanding	Par Value		(Deficit)		Loss		Interests		Equity		Shares
	(Thousands, except per share and unit amounts)
Balance at January 1, 2020	254,745	$	1,292,804	$	(618,062)	$	(2,026)	$	4,609,364	$	5,282,080	$	—
Other comprehensive income (net of tax):
Net income	—	—		69,732		—		119,828		189,560		—
Pension and other post-retirement benefits liability adjustment, net of tax expense of $10	—	—		—		30		—		30		—
Dividends on common shares ($0.45 per share)	(178)	—		(115,400)		—		—		(115,400)		—
Share-based compensation plans	85	4,500		—		—		285		4,785		—
Distributions paid to noncontrolling interest unitholders ($1.16 per common unit for EQM)	—	—		—		—		(96,526)		(96,526)		—
Distributions paid to holders of EQM Series A Preferred Units ($1.0364 per EQM Series A Preferred Unit)	—	—		—		—		(25,501)		(25,501)		—
Share Purchase Agreements (as defined in Note 6)	(25,300)	—		(190,992)		—		—		(190,992)		—
Adoption of Topic 326 (as defined in Note 1)	—	—		(3,718)		—		—		(3,718)		—
Balance at March 31, 2020	229,352	$	1,297,304	$	(858,440)	$	(1,996)	$	4,607,450	$	5,044,318	$	—
Other comprehensive income (net of tax):
Net income	—	—		54,243		—		86,964		141,207		2,251
Pension and other post-retirement benefits liability adjustment, net of tax expense of $10	—	—		—		30		—		30		—
Dividends on common shares ($0.15 per share)	—	—		(34,634)		—		—		(34,634)		—
Share-based compensation plans	(20)	1,856		—		—		—		1,856		—
Distributions paid to noncontrolling interest unitholders ($0.3875 per common unit for EQM)	—	—		—		—		(32,244)		(32,244)		—
Distributions paid to holders of EQM Series A Preferred Units ($1.0364 per EQM Series A Preferred Unit)	—	—		—		—		(25,501)		(25,501)		—
Partial period distributions on EQM Series A Preferred Units converted in the EQM Merger	—	—		—		—		(10,929)		(10,929)		—
Redemption of EQM Series A Preferred Units	—	—		(27,253)		—		(590,085)		(617,338)		—
Restructuring Agreement (as defined in Note 1)	—	(82,717)		—		—		(579,157)		(661,874)		667,214
EQM Merger (as defined in Note 1)	203,137	2,736,229		—		—		(2,993,453)		(257,224)		—
Balance at June 30, 2020	432,469	$	3,952,672	$	(866,084)	$	(1,966)	$	463,045	$	3,547,667	$	669,465
Other comprehensive income (net of tax):
Net income	—	—		149,838		—		3,973		153,811		14,628
Pension and other post-retirement benefits liability adjustment, net of tax expense of $10	—	—		—		30		—		30		—
Dividends on common shares ($0.15 per share)	—	—		(65,117)		—		—		(65,117)		—
Share-based compensation plans	1	3,262		—		—		—		3,262		—
Dividends paid to holders of Equitrans Midstream Preferred Shares ($0.075 per share)												(2,251)
Balance at September 30, 2020	432,470	$	3,955,934	$	(781,363)	$	(1,936)	$	467,018	$	3,639,653	$	681,842

The accompanying notes are an integral part of these consolidated financial statements.

11

EQUITRANS MIDSTREAM CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

1.    Financial Statements

Organization. On November 12, 2018, Equitrans Midstream Corporation (together with its consolidated subsidiaries as applicable, the Company or Equitrans Midstream), EQT and, for certain limited purposes, EQT Production Company, a wholly owned subsidiary of EQT, entered into a Separation and Distribution Agreement, pursuant to which, among other things, EQT effected the separation of EQT's midstream business, which was composed of the separately-operated natural gas gathering, transmission and storage and water services operations of EQT, from EQT's upstream business, which was composed of the natural gas, oil and natural gas liquids development, production and sales and commercial operations of EQT (the Separation), including the transfer of certain assets and liabilities to Equitrans Midstream, and distributed 80.1% of the then-outstanding shares of common stock, no par value, of Equitrans Midstream (Equitrans Midstream common stock) to EQT shareholders of record as of the close of business on November 1, 2018 (the Distribution). The Distribution was effective at 11:59 p.m., Eastern Time, on November 12, 2018. As part of the Separation, EQT retained the remaining 19.9% of the outstanding shares in Equitrans Midstream.

EQM Merger. On June 17, 2020, pursuant to that certain Agreement and Plan of Merger, dated as of February 26, 2020 (the EQM Merger Agreement), by and among the Company, EQM LP Corporation, a wholly owned subsidiary of the Company (EQM LP), LS Merger Sub, LLC, a wholly owned subsidiary of EQM LP (Merger Sub), EQM and EQGP Services, LLC, the general partner of EQM (the EQM General Partner), Merger Sub merged with and into EQM (the EQM Merger), with EQM continuing and surviving as an indirect, wholly owned subsidiary of the Company. Upon consummation of the EQM Merger, the Company acquired all of the outstanding common units representing limited partner interests in EQM (EQM Common Units) that the Company and its subsidiaries did not already own. Following the closing of the EQM Merger, EQM was no longer a publicly traded entity. See Note 2 for further information on the EQM Merger.

Preferred Restructuring Agreement. On February 26, 2020, Equitrans Midstream and EQM entered into a Preferred Restructuring Agreement (the Restructuring Agreement) with all of the holders of the Series A Perpetual Convertible Preferred Units representing limited partner interests in EQM (such units, EQM Series A Preferred Units and, such investors, collectively, the Investors), pursuant to which, at the effective time of the EQM Merger (the Effective Time): (i) EQM redeemed $600 million aggregate principal amount of the Investors' EQM Series A Preferred Units issued and outstanding immediately prior to the Restructuring Closing (defined below), which occurred substantially concurrent with the closing of the EQM Merger, for cash at 101% of the EQM Series A Preferred Unit purchase price of $48.77 per such unit (the EQM Series A Preferred Unit Purchase Price) plus any accrued and unpaid distribution amounts and partial period distribution amounts, and (ii) immediately following such redemption, each remaining issued and outstanding EQM Series A Preferred Unit was exchanged for 2.44 shares of a newly authorized and created series of preferred stock, without par value, of Equitrans Midstream, convertible into Equitrans Midstream common stock (the Equitrans Midstream Preferred Shares) on a one for one basis, in each case, in connection with the occurrence of the “Series A Change of Control” (as defined in the Fourth Amended and Restated Agreement of Limited Partnership of EQM (as amended, the Former EQM Partnership Agreement)) that occurred upon the closing of the EQM Merger (collectively, the Restructuring and, the closing of the Restructuring, the Restructuring Closing). See Note 2 for further information on the Restructuring Agreement.

Basis of Presentation. References in these financial statements to Equitrans Midstream or the Company refer collectively to Equitrans Midstream Corporation and, as applicable, its consolidated subsidiaries for all periods presented, unless otherwise indicated.

The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the requirements of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, these unaudited consolidated financial statements include all adjustments (consisting of only normal, recurring adjustments, unless otherwise disclosed in this Quarterly Report on Form 10-Q) necessary for a fair presentation of the financial position of the Company as of September 30, 2020 and December 31, 2019, the results of its operations and equity for the three and nine months ended September 30, 2020 and 2019 and its cash flows for the nine months ended September 30, 2020 and 2019. The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements at that date but does not include all of the information and notes required by GAAP for complete financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2019, which includes all disclosures required by GAAP.

Due to, among other things, the seasonal nature of the Company's utility customer contracts and temporary volume curtailments by certain of the Company's customers, including EQT, as well as producers’ well completion activities and varying needs for

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fresh and produced water (which are partially driven by horizontal lateral lengths and the number of completion stages per well), the interim statements for the three and nine months ended September 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020.

For further information, refer to the Company's annual consolidated financial statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2019, as well as "Management's Discussion and Analysis of Financial Condition and Results of Operations" contained herein.

Recently Issued Accounting Standards

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The standard amended guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, this standard eliminated the probable initial recognition threshold in then current GAAP, and, in its place, requires an entity to recognize its current estimate of all expected credit losses. The amendments affected loans, debt securities, trade receivables, contract assets, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope of the standard that have the contractual right to receive cash. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses (Topic 326). The update provides entities with targeted transition relief that is intended to increase comparability of financial statement information for some entities that otherwise would have measured similar financial instruments using different measurement methodologies. In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments – Credit Losses. The update clarifies and addresses stakeholders' specific issues in ASU 2016-13.

The Company adopted the standard on January 1, 2020, using the modified retrospective method for all financial assets recorded at amortized cost. Results for reporting periods beginning after January 1, 2020 are presented under Topic 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company's current expected credit loss (CECL) methodology considers risks of collection based on a customer’s current credit status. The standard requires an entity to assess whether financial assets share similar risk characteristics and, if so, group such assets in a pool. Customer balances are aggregated for evaluation based on their credit risk rating, which takes into account changes in economic factors that impact a customer’s ability to meet its financial obligations. The Company's CECL methodology assigns a reserve, even if remote, to each customer based on credit risk. The table below summarizes the changes in the allowance for credit losses by outstanding receivable for the nine months ended September 30, 2020:

	Accounts Receivable		Contract Asset (a)		Other Assets (b)		Total
Balance at December 31, 2019	$	(285)	$	—	$	—	$	(285)
Adoption of Topic 326	(2,708)		—		(1,010)		(3,718)
Provision for (recovery of) expected credit losses	(616)		(222)		26		(812)
Balance at September 30, 2020	$	(3,609)	$	(222)	$	(984)	$	(4,815)

(a)    Included in other current assets in the consolidated balance sheets.

(b)    Includes the Company's Preferred Interest in EES and other long-term receivables.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement, Changes to the Disclosure Requirements for Fair Value Measurement, which makes a number of changes to the hierarchy associated with Level 1, 2 and 3 fair value measurements and the related disclosure requirements. This guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company adopted this standard on January 1, 2020. The adoption of this standard did not have an impact on the Company's financial statements.

In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes, which enhances and simplifies various aspects of the income tax accounting guidance including the elimination of certain exceptions related to the approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The guidance also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. The guidance will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. The Company early-adopted the standard in the first quarter of 2020 with no significant effect on its financial statements or related disclosures.

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In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides practical expedients for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. This guidance is applicable for the Amended EQM Credit Facility, the Amended 2019 EQM Term Loan Agreement (as defined in Note 9) and the Eureka Credit Facility, as well as for each dividend following March 31, 2024 for the Equitrans Midstream Preferred Shares, which each use the London Inter-Bank Offered Rate (LIBOR) as a reference rate. The ASU is effective immediately but is only available through December 31, 2022. The Company is currently evaluating the potential impact of this standard on its financial statements.

In August 2020, the FASB issued ASU 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the accounting for convertible debt and convertible preferred stock by removing the requirements to separately present certain conversion features in equity. In addition, the amendments in the ASU 2020-06 also simplify the guidance in ASC Subtopic 815-40, Derivatives and Hedging: Contracts in Entity’s Own Equity, by removing certain criteria that must be satisfied in order to classify a contract as equity. Finally, the amendments revise the guidance on calculating earnings per share, requiring use of the if-converted method for all convertible instruments and rescinding an entity’s ability to rebut the presumption of share settlement for instruments that may be settled in cash or other assets. The amendments will be effective for fiscal years beginning after December 15, 2021. Early adoption is permitted for fiscal years beginning after December 15, 2020. Adoption of the guidance must commence at the beginning of the annual fiscal year. The Company is currently evaluating the potential impact of this standard on its financial statements.

2.    Investments in Consolidated, Non-Wholly Owned Entities

Investment in EQM

EQM IDR Transaction. On February 22, 2019, the Company completed a simplification transaction pursuant to that certain Agreement and Plan of Merger, dated as of February 13, 2019, by and among the Company and certain related parties, pursuant to which, among other things, (i) Equitrans Merger Sub, LP merged with and into EQGP (the IDR Merger) with EQGP continuing as the surviving limited partnership and a wholly owned subsidiary of EQM, and (ii) each of (a) the IDRs in EQM, (b) the economic portion of the general partner interest in EQM and (c) the issued and outstanding common units representing limited partner interests in EQGP (EQGP Common Units) were canceled, and, as consideration for such cancellation, certain affiliates of the Company received on a pro rata basis 80,000,000 newly-issued EQM Common Units and 7,000,000 newly-issued Class B units representing limited partner interests in EQM (Class B units), and the EQM General Partner retained the non-economic general partner interest in EQM (such transactions, collectively, the EQM IDR Transaction). Additionally, as part of the EQM IDR Transaction, 21,811,643 EQM Common Units held by EQGP were canceled and 21,811,643 EQM Common Units were issued pro rata to certain subsidiaries of the Company. As a result of the EQM IDR Transaction, the EQM General Partner replaced EQM Midstream Services, LLC as the general partner of EQM.

After giving effect to the EQM IDR Transaction, including the issuance of Class B units, Equitrans Gathering Holdings, LLC (Equitrans Gathering Holdings), EQM GP Corporation (EQM GP Corp) and Equitrans Midstream Holdings, LLC (EMH), each a wholly owned subsidiary of Equitrans Midstream, held 89,505,616, 89,536 and 27,650,303 EQM Common Units, respectively, for a total of 117,245,455 EQM Common Units. Additionally, Equitrans Gathering Holdings, EQM GP Corp and EMH held 6,153,907, 6,155 and 839,938 Class B units, respectively, for a total of 7,000,000 Class B units.

During the first quarter of 2019, as a result of the EQM IDR Transaction, the Company recorded, in the aggregate, a $991.1 million increase of common stock, no par value, a decrease in noncontrolling interest of $1.3 billion and a decrease in deferred tax asset of $346.5 million.

EQM Merger. As discussed in Note 1, on June 17, 2020, the Company, EQM, EQM LP, Merger Sub and the EQM General Partner completed the EQM Merger, pursuant to which Merger Sub merged with and into EQM, with EQM continuing and surviving as an indirect, wholly owned subsidiary of the Company. As a result of the EQM Merger, EQM is no longer a publicly traded entity.

At the Effective Time, subject to applicable tax withholding, (i) each outstanding EQM Common Unit, other than EQM Common Units owned by the Company and its subsidiaries, was converted into the right to receive 2.44 shares of Equitrans Midstream common stock (the Merger Consideration); (ii) (x) $600.0 million aggregate principal amount of the EQM Series A Preferred Units issued and outstanding immediately prior to the Effective Time were redeemed by EQM for cash at 101% of the EQM Series A Preferred Unit Purchase Price plus any accrued and unpaid distribution amounts and partial period distribution amounts, and (y) immediately following such redemption, each remaining issued and outstanding EQM Series A Preferred Unit was exchanged for 2.44 Equitrans Midstream Preferred Shares; and (iii) each outstanding phantom unit relating to an EQM Common Unit issued pursuant to the Amended and Restated EQGP Services, LLC 2012 Long-Term Incentive Plan, dated as of February 22, 2019 (the EQM LTIP), and any other award issued pursuant to the EQM LTIP, whether vested or unvested, was converted into the right to receive, with respect to each EQM Common Unit subject thereto, the Merger Consideration (plus any

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accrued but unpaid amounts in relation to distribution equivalent rights). The limited partner interests in EQM owned by the Company and its subsidiaries (including the Class B units) remained outstanding as limited partner interests in the surviving entity. The EQM General Partner continued to own the non-economic general partner interest in the surviving entity.

No fractional shares of Equitrans Midstream common stock were issued in the EQM Merger; instead, all fractions of Equitrans Midstream common stock to which an EQM common unitholder otherwise would have been entitled were aggregated and the resulting fraction was rounded up to the nearest whole share of Equitrans Midstream common stock.

In connection with the EQM Merger at the Effective Time, the Company's omnibus and secondment agreements with EQM and certain other subsidiaries of the Company terminated, subject to the survival of certain license rights and indemnification obligations.

Because the Company controlled EQM both before and after the EQM Merger, the increase in the Company’s ownership interest in EQM resulting from the EQM Merger was accounted for as an equity transaction and reflected as a reduction of the noncontrolling interest associated with public ownership of EQM Common Units, offset by an increase in common stock, no par value. No gain or loss was recognized in the Company’s statement of consolidated comprehensive income as a result of the EQM Merger. In addition, the tax effects of the EQM Merger are reported as adjustments to deferred income taxes and Equitrans Midstream common stock, consistent with ASC 740, Income Taxes.

Immediately prior to the completion of the EQM Merger, the public limited partners collectively owned a 40.1% interest in EQM, excluding the impact of the EQM Series A Preferred Units. The publicly-owned EQM Common Units, prior to completion of the EQM Merger, were reflected within noncontrolling interest in the Company's consolidated balance sheets as of March 31, 2020. The portion of EQM earnings attributable to publicly held EQM Common Units prior to completion of the EQM Merger was reflected in net income attributable to noncontrolling interests in the Company's statements of consolidated comprehensive income.

During the second quarter of 2020, as a result of the EQM Merger, the Company recorded, in the aggregate, a $2.7 billion increase of common stock, no par value, a decrease in noncontrolling interest of $3.0 billion and an increase in deferred tax liability of $257.2 million.

Additionally, for the period from January 1, 2020 to June 17, 2020, the Company determined that EQM was a variable interest entity. Through the Company's ownership and control of the general partner of EQM during that period, the Company had the power to direct the activities that most significantly affected EQM's economic performance. As a result of the EQM Merger, EQM is no longer a variable interest entity.

The Company recorded $1.0 million and $23.8 million in expenses related to the EQM Merger and the EQT Global GGA (defined in Note 4) during the three and nine months ended September 30, 2020, respectively. The expenses consisted of advisor, legal and accounting fees related to the transactions and are included in separation and other transaction costs in the statements of consolidated comprehensive income.

Preferred Restructuring Agreement. As discussed in Note 1, on June 17, 2020, concurrently with the closing of the EQM Merger: (i) EQM redeemed $600 million aggregate principal amount of the EQM Series A Preferred Units issued and outstanding immediately prior to the Effective Time for cash at 101% of the EQM Series A Preferred Unit Purchase Price plus any accrued and unpaid distribution amounts and partial period distribution amounts, and (ii) immediately following such redemption, each remaining issued and outstanding EQM Series A Preferred Unit was exchanged for 2.44 Equitrans Midstream Preferred Shares, in each case, in connection with the occurrence of the “Series A Change of Control” (as defined in the Former EQM Partnership Agreement) that occurred upon the closing of the EQM Merger. The Equitrans Midstream Preferred Shares issued were not registered under the Securities Act of 1933, as amended (the Securities Act), in reliance upon the exemption provided in Section 4(a)(2) of the Securities Act and/or Regulation D promulgated thereunder.

On June 17, 2020, the Company paid cash of $617.3 million to redeem $600 million aggregate principal amount of the Investors’ EQM Series A Preferred Units and pay partial period distributions on such EQM Series A Preferred Units. At the time of the redemption, the carrying value of the EQM Series A Preferred Units was $590.1 million, resulting in a premium over the carrying value of $27.3 million. The premium represented a return similar to distributions to the holders of the EQM Series A Preferred Units and, as such, reduced net income attributable to Equitrans Midstream common shareholders, and was recorded in retained earnings (deficit) in the statements of consolidated shareholders' equity and mezzanine equity.

Pursuant to the Restructuring Agreement, in connection with the Restructuring Closing, the Company filed a statement with respect to shares, attaching a Certificate of Designations (the Certificate of Designations), with the Pennsylvania Department of State on June 17, 2020 to, among other things, authorize and establish the designations, rights and preferences of the Equitrans Midstream Preferred Shares. On August 13, 2020, pursuant to the terms of the Certificate of Designations, the Company paid

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$10.9 million in the aggregate to holders of Equitrans Midstream Preferred Shares related to forgone partial period distributions on the EQM Series A Preferred Units that were converted into Equitrans Midstream Preferred Shares in connection with the EQM Merger.

The Equitrans Midstream Preferred Shares were a new class of security as of June 2020. They rank pari passu with any other outstanding class or series of preferred stock of the Company and senior to Equitrans Midstream common stock with respect to dividend rights and rights upon liquidation. The Equitrans Midstream Preferred Shares vote on an as-converted basis with Equitrans Midstream common stock and have certain other class voting rights with respect to any amendment to the Certificate of Designations or the Company’s Amended and Restated Articles of Incorporation that would be adverse (other than in a de minimis manner) to any of the rights, preferences or privileges of the Equitrans Midstream Preferred Shares.

The holders of the Equitrans Midstream Preferred Shares receive cumulative quarterly dividends at a rate per annum of 9.75% for each quarter ending on or before March 31, 2024, and thereafter quarterly dividends at a rate per annum equal to the sum of (i) three-month LIBOR as of the LIBOR Determination Date (as defined in the Certificate of Designations) in respect of the applicable quarter and (ii) 8.15%; provided that such rate per annum in respect of periods after March 31, 2024 will not be less than 10.50%. The Company is not permitted to pay any dividends on any junior securities, including on Equitrans Midstream common stock, prior to paying the quarterly dividends payable to the Equitrans Midstream Preferred Shares, including any previously accrued and unpaid dividends.

Each holder of the Equitrans Midstream Preferred Shares may elect to convert all or any portion of the Equitrans Midstream Preferred Shares owned by it into Equitrans Midstream common stock initially on a one-for-one basis, subject to certain anti-dilution adjustments and an adjustment for any dividends that have accrued but not been paid when due and partial period dividends (referred to as the “conversion rate”), at any time (but not more often than once per fiscal quarter) after April 10, 2021 (or immediately prior to a liquidation, dissolution or winding up of the Company), provided that any conversion involves an aggregate number of Equitrans Midstream Preferred Shares of at least $20.0 million (calculated based on the closing price of Equitrans Midstream common stock on the trading day preceding notice of the conversion) or such lesser amount if such conversion relates to all of a holder’s remaining Equitrans Midstream Preferred Shares or if such conversion is approved by the Company's Board of Directors.

So long as the holders of the Equitrans Midstream Preferred Shares have not elected to convert all of their Equitrans Midstream Preferred Shares into Equitrans Midstream common stock, the Company may elect to convert all of the Equitrans Midstream Preferred Shares into Equitrans Midstream common stock, at the then-applicable conversion rate, at any time after April 10, 2021 if (i) the shares of Equitrans Midstream common stock are listed for, or admitted to, trading on a national securities exchange, (ii) the closing price per share of Equitrans Midstream common stock on the national securities exchange on which the shares of Equitrans Midstream common stock are listed for, or admitted to, trading exceeds $27.99 for the 20 consecutive trading days immediately preceding notice of the conversion, (iii) the average daily trading volume of the Equitrans Midstream common stock on the national securities exchange on which the shares of Equitrans Midstream common stock are listed for, or admitted to, trading exceeds 1,000,000 shares (subject to certain adjustments) of Equitrans Midstream common stock for the 20 consecutive trading days immediately preceding notice of the conversion, (iv) the Company has an effective registration statement on file with the SEC covering resales of the shares of Equitrans Midstream common stock to be received by such holders upon any such conversion and (v) the Company has paid all prior accumulated and unpaid dividends in cash in full to the holders.

Upon certain events involving a Change of Control (as defined in the Certificate of Designations) in which more than 90% of the consideration payable to the Company, or to the holders of Equitrans Midstream common stock, is payable in cash, the Equitrans Midstream Preferred Shares will automatically convert into Equitrans Midstream common stock at a conversion ratio equal to the greater of (i) the quotient of (a) the sum of (x) $19.99 (such price, the Equitrans Midstream Preferred Share Issue Price) plus (y) any accrued and unpaid dividends as of such date, including any partial period dividends, with respect to the Equitrans Midstream Preferred Shares, divided by (b) the Equitrans Midstream Preferred Share Issue Price and (ii) the quotient of (a) the sum of (x)(1) the Equitrans Midstream Preferred Share Issue Price multiplied by (2) 110% plus (y) any accrued and unpaid dividends on such date, including any partial period dividends with respect to the Equitrans Midstream Preferred Shares, divided by (b) the volume weighted average price of the shares of Equitrans Midstream common stock for the 30-day period ending immediately prior to the execution of definitive documentation relating to the Change of Control.

In connection with other Change of Control events that do not satisfy the 90% cash consideration threshold described above, in addition to certain other conditions, each holder of Equitrans Midstream Preferred Shares may elect to (i) convert all, but not less than all, of its Equitrans Midstream Preferred Shares into Equitrans Midstream common stock at the then-applicable conversion rate, (ii) if the Company is not the surviving entity (or if the Company is the surviving entity, but Equitrans Midstream common stock will cease to be listed), require the Company to use commercially reasonable efforts to cause the

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surviving entity in any such transaction to deliver, in exchange for such holder's Equitrans Midstream Preferred Shares, a substantially equivalent security that has rights, preferences and privileges substantially equivalent to the Equitrans Midstream Preferred Shares (or if the Company is unable to cause such substantially equivalent securities to be issued, to exercise the option described in clause (i) or (iv) hereof or elect to convert such Equitrans Midstream Preferred Shares at a conversion ratio reflecting a multiple of invested capital), (iii) if the Company is the surviving entity, continue to hold the Equitrans Midstream Preferred Shares or (iv) require the Company to redeem the Equitrans Midstream Preferred Shares at a price per share equal to 101% of the Equitrans Midstream Preferred Share Issue Price, plus accrued and unpaid dividends, including any partial period dividends, on the applicable Equitrans Midstream Preferred Shares as of such date, which redemption price may be payable in cash, Equitrans Midstream common stock or a combination thereof at the election of the Company's Board of Directors (and, if payable in Equitrans Midstream common stock, such Equitrans Midstream common stock will be issued at 95% of the volume-weighted average price of Equitrans Midstream common stock for the 20-day period ending on the fifth trading day immediately preceding the consummation of the Change of Control). Any holder of Equitrans Midstream Preferred Shares that requires the Company to redeem its Equitrans Midstream Preferred Shares pursuant to clause (iv) above will have the right to withdraw such election with respect to all, but not less than all, of its Equitrans Midstream Preferred Shares at any time prior to the fifth trading day immediately preceding the consummation of the Change of Control and instead elect to be treated in accordance with any of clauses (i), (ii) or (iii) above.

At any time on or after January 1, 2024, the Company will have the right, subject to applicable law, to redeem the Equitrans Midstream Preferred Shares, in whole or in part, by paying cash for each Equitrans Midstream Preferred Share to be redeemed in an amount equal to the greater of (a) the sum of (i)(1) the Equitrans Midstream Preferred Share Issue Price multiplied by (2) 110%, plus (ii) any accrued and unpaid dividends, including partial period dividends, with respect to the Equitrans Midstream Preferred Shares as of such date and (b) the amount the holder of such Equitrans Midstream Preferred Share would receive if such holder had converted such Equitrans Midstream Preferred Share into shares of Equitrans Midstream common stock at the then-applicable conversion ratio and the Company liquidated immediately thereafter.

Pursuant to the terms of the Restructuring Agreement, in connection with the Restructuring Closing, the Company entered into a registration rights agreement with the Investors (the Registration Rights Agreement) pursuant to which, among other things, the Company gave the Investors certain rights to require the Company to file and maintain one or more registration statements with respect to the resale of the Equitrans Midstream Preferred Shares and the shares of Equitrans Midstream common stock that are issuable upon conversion of the Equitrans Midstream Preferred Shares, and certain Investors have the right to require the Company to initiate underwritten offerings for the Equitrans Midstream Preferred Shares and the shares of Equitrans Midstream common stock that are issuable upon conversion of the Equitrans Midstream Preferred Shares.

During the second quarter of 2020, as a result of the Restructuring Closing, the Company recorded an increase in mezzanine equity of $667.2 million, a decrease in noncontrolling interest of $579.2 million and a decrease in common stock, no par value, of $82.7 million, net of deferred taxes of $5.3 million.

The Equitrans Midstream Preferred Shares are considered redeemable securities under GAAP due to the possibility of redemption outside the Company’s control. They are therefore presented as temporary equity in the mezzanine equity section of the Company’s consolidated balance sheets and are not considered to be a component of shareholders’ equity on the consolidated balance sheets. The Equitrans Midstream Preferred Shares were recorded at fair value as of the date of issuance, and income allocations increase the carrying value and declared dividends decrease the carrying value of the Equitrans Midstream Preferred Shares. As the Equitrans Midstream Preferred Shares are not currently redeemable and not probable of becoming redeemable, adjustment to the initial carrying amount is not necessary and would only be required if it becomes probable that the Equitrans Midstream Preferred Shares would become redeemable.

3.    Mergers and Acquisitions

EQM Merger. See Note 2.

Bolt-on Acquisition. On March 13, 2019, the Company (through EQM) entered into a Purchase and Sale Agreement with North Haven Infrastructure Partners II Buffalo Holdings, LLC (NHIP), an affiliate of Morgan Stanley Infrastructure Partners, pursuant to which the Company acquired from NHIP a 60% Class A interest in Eureka Midstream Holdings, LLC (Eureka Midstream) and a 100% interest in Hornet Midstream Holdings, LLC (Hornet Midstream) (collectively, the Bolt-on Acquisition) for total consideration of approximately $1.04 billion, composed of approximately $852 million in cash, net of purchase price adjustments, and approximately $192 million in assumed pro-rata debt. At the time of the acquisition, Eureka Midstream owned a 190-mile gathering header pipeline system in Ohio and West Virginia that services both dry Utica and wet Marcellus Shale production and Hornet Midstream owned a 15-mile, high-pressure gathering system in West Virginia that connects to the Eureka Midstream system. The Bolt-on Acquisition closed on April 10, 2019 and was funded through proceeds from the March

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2019 private placement by EQM of an aggregate of 24,605,291 EQM Series A Preferred Units that closed concurrently with the Bolt-on Acquisition.

At the closing of the Bolt-on Acquisition, a subsidiary of Hornet Midstream terminated all of its obligations under its term loan credit agreement and repaid the $28.2 million outstanding principal balance and $0.1 million in related interest and fees.

The Company recorded $0.3 million and $17.0 million in acquisition-related expenses related to the Bolt-on Acquisition during the three and nine months ended September 30, 2019, respectively. The Bolt-on Acquisition acquisition-related expenses included $0.3 million for professional fees for the three months ended September 30, 2019 and $15.3 million for professional fees and $1.7 million for compensation arrangements for the nine months ended September 30, 2019, and are included in separation and other transaction costs in the statements of consolidated comprehensive income.

The Bolt-on Acquisition was accounted for as a business combination using the acquisition method. As a result of the acquisition, the Company recognized $99.2 million of goodwill, which was allocated to the Gathering segment. Such goodwill primarily related to additional commercial opportunities, a diversified producer customer mix, increased exposure to dry Utica and wet Marcellus acreage and operating leverage within the Gathering segment. The purchase price allocation and related adjustments were finalized during the fourth quarter of 2019. The following table summarizes the final purchase price and allocation of the fair value of the assets acquired and liabilities assumed in the Bolt-on Acquisition as of April 10, 2019 by the Company, as well as certain measurement period adjustments made subsequent to the Company's initial valuation.

(in thousands)	Preliminary Purchase Price Allocation (As initially reported)		Measurement Period Adjustments (a)		Purchase Price Allocation (As adjusted)
Consideration given:
Cash consideration (b)	$	861,250	$	(11,404)	$	849,846
Buyout of portion of Eureka Midstream Class B Units and incentive compensation	2,530		—		2,530
Total consideration	863,780		(11,404)		852,376
Fair value of liabilities assumed:
Current liabilities	52,458		(9,857)		42,601
Long-term debt	300,825		—		300,825
Other long-term liabilities	10,203		—		10,203
Amount attributable to liabilities assumed	363,486		(9,857)		353,629
Fair value of assets acquired:
Cash	15,145		—		15,145
Accounts receivable	16,817		—		16,817
Inventory	12,991		(26)		12,965
Other current assets	882		—		882
Net property, plant and equipment	1,222,284		(8,906)		1,213,378
Intangible assets (c)	317,000		(6,000)		311,000
Deferred tax asset	5,773		(5,268)		505
Other assets	14,567		—		14,567
Amount attributable to assets acquired	1,605,459		(20,200)		1,585,259
Noncontrolling interests	(486,062)		7,602		(478,460)
Goodwill as of April 10, 2019	$	107,869	$	(8,663)	$	99,206
Impairment of goodwill (d)					(99,206)
Goodwill as of September 30, 2020					$	—

(a)    The Company recorded measurement period adjustments to its preliminary acquisition date fair values due to the refinement of its valuation models, assumptions and inputs. The measurement period adjustments were based upon information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the measurement of the amounts recognized at that date.

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(b)     The cash consideration for the Bolt-on Acquisition was adjusted by approximately $11.4 million related to working capital adjustments and the release of all escrowed indemnification funds to EQM.

(c)    After considering the refinements to the valuation models, the Company estimated the fair value of the customer-related intangible assets acquired as part of the Bolt-on Acquisition to be $311.0 million. As a result, the fair value of the customer-related intangible assets was decreased by $6.0 million on September 30, 2019 with a corresponding increase to goodwill. In addition, the change to the provisional amount resulted in a decrease in amortization expense and accumulated amortization of approximately $0.4 million.

(d)    During the third quarter of 2019, the Company identified impairment indicators that suggested the fair value of its goodwill was more likely than not below its carrying amount. As such, the Company performed an interim goodwill impairment assessment, which resulted in the Company recognizing impairment to goodwill of approximately $268.1 million, of which $99.2 million was associated with its Eureka/Hornet reporting unit, bringing the reporting unit's goodwill balance to zero. See Note 4 for further detail.

The estimated fair value of midstream facilities and equipment, generally consisting of pipeline systems and compression stations, was estimated using the cost approach. Significant unobservable inputs in the estimate of fair value under this approach included management's assumptions about the replacement costs for similar assets, the relative age of the acquired assets and any potential economic or functional obsolescence associated with the acquired assets. As a result, the estimated fair value of the midstream facilities and equipment represented a Level 3 fair value measurement.

As a result of the acquisition, the noncontrolling interest in Eureka Midstream was estimated to be $478.5 million. The fair value of the noncontrolling interest was calculated based on the enterprise value of Eureka Midstream and the percentage ownership not acquired by the Company. Significant unobservable inputs in the enterprise value of Eureka Midstream include future revenue estimates and future cost assumptions. As a result, the fair value measurement is based on significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement.

As part of the preliminary purchase price allocation, the Company identified intangible assets for customer relationships with third-party customers. The fair value of the customer relationships with third-party customers was determined using the income approach, which requires a forecast of the expected future cash flows generated and an estimated market-based weighted average cost of capital. Significant unobservable inputs in the determination of fair value include future revenue estimates, future cost assumptions and estimated customer retention rates. As a result, the estimated fair value of the identified intangible assets represents a Level 3 fair value measurement. The Company calculates amortization of intangible assets using the straight-line method over the estimated useful life of the intangible assets.

The Company previously utilized a useful life of 20 years for the Eureka Midstream- and Hornet Midstream-related intangible assets. As a result of expected changes in cash flows due to decreases in producer activity driven by lower natural gas prices, as of April 1, 2020, the Company prospectively changed the remaining useful life of the Eureka Midstream-related intangible assets to 10.75 years, increasing the expected annual amortization expense by $9.1 million. In addition, as a result of then expected reductions in future cash flows, as of October 1, 2019, the useful life of the Hornet Midstream-related intangible assets was prospectively changed to 7.25 years. The estimated annual amortization expense for the Eureka Midstream- and Hornet Midstream-related intangible assets for the remaining three months of 2020 and over the successive five years is as follows: 2020 $5.8 million, 2021 $23.3 million, 2022 $23.3 million, 2023 $23.3 million, 2024 $23.3 million and 2025 $23.3 million.

As discussed in Note 4, during the third quarter of 2019, as a result of a recoverability test conducted due to a decrease in producer activity, the Company determined that the estimated fair value of the Hornet Midstream-related intangible assets was not in excess of the assets’ carrying value, which resulted in an impairment charge of $36.4 million related to certain of such intangibles within the Company’s Gathering segment. The Company also performed a recoverability test during the first quarter of 2020 due to significant declines in the unit price of EQM Common Units and corresponding market capitalization, which resulted in an additional impairment charge of $17.7 million to the Hornet Midstream-related intangible assets (see Note 4). The useful life of the Hornet Midstream-related intangible assets remained 7.25 years following the first quarter 2020 recoverability test.

In conjunction with the Bolt-on Acquisition, the Company recorded tax deductible goodwill of $43.0 million. The Company does not have tax basis on the portion attributable to the former noncontrolling limited partners of EQM or on the portion attributable to the noncontrolling member of Eureka Midstream.

4.     Impairments of Long-Lived Assets and Other-Than-Temporary Decline in Value

Goodwill. On February 26, 2020 (the EQT Global GGA Effective Date), the Company (through EQM) entered into a Gas Gathering and Compression Agreement (as amended, the EQT Global GGA) with EQT for the provision of certain gas gathering services to EQT in the Marcellus and Utica Shales of Pennsylvania and West Virginia (as further discussed in Note 6). Prior to the EQT Global GGA Effective Date, the Company operated three reportable operating segments and seven reporting units, which are one level below the operating segment level and are generally based on how segment management

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reviews the Company's operating results. Commencing with the EQT Global GGA Effective Date, the Company reduced its reporting units from seven to six and maintained its three reportable operating segments. As of the EQT Global GGA Effective Date, the only reporting unit to which the Company had goodwill recorded related to the Pennsylvania gathering assets acquired in connection with EQM's merger with Rice Midstream Partners LP in July 2018 (RMP PA Gas Gathering reporting unit). As a result of the EQT Global GGA, the assets under, and operations associated with, the RMP PA Gas Gathering reporting unit and the reporting unit associated with the gas gathering and compression activities of EQM Gathering Opco, LLC, an indirect wholly owned subsidiary of the Company (EQM Opco reporting unit), were combined to service a collective MVC under the agreement. Therefore, effective on the EQT Global GGA Effective Date, the RMP PA Gas Gathering reporting unit was merged with and into the EQM Opco reporting unit, with the EQM Opco reporting unit surviving.

During the first quarter of 2020, the Company identified impairment indicators in the form of significant declines in the unit price of EQM Common Units and corresponding market capitalization. Management considered these declines as indicators that the fair value of the RMP PA Gas Gathering reporting unit was more likely than not below its carrying amount, and the performance of an interim quantitative goodwill impairment assessment was required. Additionally, as a result of the combination of the RMP PA Gas Gathering reporting unit and the EQM Opco reporting unit, the Company tested both the RMP PA Gas Gathering and the merged EQM Opco reporting units for goodwill impairment. In estimating the fair value of the RMP PA Gas Gathering and the merged EQM Opco reporting units, the Company used a combination of the income approach and the market approach. The Company used the income approach’s discounted cash flow method, which applies significant inputs not observable in the public market (Level 3), including estimates and assumptions related to the use of an appropriate discount rate, future throughput volumes, operating costs, capital spending and changes in working capital. The Company used the market approach’s comparable company and reference transaction methods. The comparable company method evaluates the value of a company using metrics of other businesses of similar size and industry. The reference transaction method evaluates the value of a company based on pricing multiples derived from similar transactions entered into by similar companies.

As a result of the interim assessment, the Company determined that the fair values of the RMP PA Gas Gathering reporting unit and the merged EQM Opco reporting unit, as applicable, were greater than their respective carrying values. No impairment to goodwill was recorded during the three months ended March 31, 2020. The Company believes the estimates and assumptions used in estimating its reporting units’ fair values are reasonable and appropriate; however, different assumptions and estimates could materially affect the calculated fair values of the RMP PA Gas Gathering reporting unit and the merged EQM Opco reporting unit and the resulting conclusions on impairment of goodwill, which could materially affect the Company’s results of operations and financial position. Additionally, actual results could differ from these estimates. Additional adverse changes in the future could reduce the underlying cash flows used to estimate the fair value of the merged EQM Opco reporting unit and could result in a decline in fair value that could trigger future impairment charges relating to the EQM Opco reporting unit.

The three reporting units to which the Company had goodwill during 2019 were (i) the Ohio gathering assets acquired in connection with EQM’s acquisition of the outstanding limited liability company interests in each of EQM West Virginia Midstream LLC (EQM West Virginia), EQM Olympus Midstream LLC (EQM Olympus) and Strike Force Midstream Holdings LLC (Strike Force Holdings) (collectively, Rice Retained Midstream) (ii) RMP PA Gas Gathering and (iii) the Ohio and West Virginia gathering assets acquired in the Bolt-on Acquisition (Eureka/Hornet, collectively with Rice Retained Midstream and RMP PA Gas Gathering, the Reporting Units).

During the third quarter of 2019, the Company identified impairment indicators in the form of significant declines in the unit price of EQM's Common Units and corresponding market capitalization, primarily as a result of continued suppressed natural gas prices and decreased producer drilling activity. Management considered these declines as indicators that the fair value of goodwill was more likely than not below the carrying amounts for the respective Reporting Units. As such, the performance of an interim goodwill impairment assessment was required. In estimating the fair value of each of the Reporting Units, the Company used a combination of the income approach and the market approach, both as described above.

As of August 31, 2019, the Company determined that the fair value of Rice Retained Midstream was greater than its carrying value; however, the carrying values of RMP PA Gas Gathering and Eureka/Hornet were each greater than their respective fair values. As a result, the Company recognized impairment of goodwill of $168.9 million and $99.2 million on RMP PA Gas Gathering and Eureka/Hornet, respectively. The non-cash impairment charge is included in the impairments of long-lived assets line on the Company's statements of consolidated comprehensive income.

Long-lived assets, including intangible assets and equity method investments. The Company evaluates long-lived assets, including related intangibles, for impairment when events or changes in circumstances indicate, in management's judgment, that the carrying value of such assets may not be recoverable. Asset recoverability is measured by comparing the carrying value of the asset or asset group with its expected future pre-tax undiscounted cash flows. These cash flow estimates require the Company to make projections and assumptions for many years into the future for pricing, demand, competition, operating cost and other factors. If the carrying amount exceeds the expected future undiscounted cash flows, the Company recognizes an

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impairment equal to the excess of net book value over fair value as determined by quoted market prices in active markets or present value techniques if quotes are unavailable. The determination of the fair value using present value techniques requires the Company to make projections and assumptions regarding the probability of a range of outcomes and the rates of interest used in the present value calculations. Any changes the Company makes to these projections and assumptions could result in significant revisions to its evaluation of recoverability of its property, plant and equipment and the recognition of additional impairments.

As of March 31, 2020, the Company performed a recoverability test of the Hornet Midstream long-lived assets due to decreased producer activity. As a result of the recoverability test, management determined that the carrying value of the Hornet Midstream long-lived assets (which consisted of gathering assets and customer-related intangible assets) was not recoverable under ASC 360, Impairment Testing: Long-Lived Assets Classified as Held and Used. During the first quarter of 2020, the Company estimated the fair value of the Hornet Midstream asset group and determined that the fair value was not in excess of the assets’ carrying value, which resulted in impairment charges of approximately $37.9 million to the gathering assets and approximately $17.7 million to the customer-related intangible assets both within the Company’s Gathering segment. The non-cash impairment charges were recognized during the first quarter of 2020 and are included in the impairments of long-lived assets line on the statements of consolidated comprehensive income.

During the third quarter of 2019, the Company assessed its long-lived asset groups for impairment due to the triggering events described in the goodwill impairment summary above. As a result of the recoverability test, management determined that the carrying value of certain long-lived assets associated with Eureka/Hornet (specifically, Hornet Midstream customer-related intangible assets) were not recoverable. The Company estimated the fair value of the Hornet Midstream-related intangible assets and determined that the fair value was not in excess of the assets’ carrying value, which resulted in an impairment charge of approximately $36.4 million related to certain of such intangible assets within the Company's Gathering segment. The non-cash impairment charge is included in the impairments of long-lived assets line on the statements of consolidated comprehensive income.

During 2019, the Company reassessed its asset groupings for its regulated pipelines due to certain regulatory ratemaking policy changes affecting the regulated pipelines, changes in strategic focus and plans for segmentation of operations. Prior to the second quarter of 2019, the Company defined its regulated asset grouping to include the FERC-regulated transmission and storage assets, integrated with the low-pressure assets due to overlapping operations, a shared costs structure and similar ratemaking structures. During the second quarter of 2019, Equitrans L.P. reached a settlement related to its FERC Form 501-G report, which was focused solely on the Company’s FERC-regulated transmission and storage assets. Further, management increased its operational focus and emphasis on high-pressure gathering assets as illustrated by the consummation of the Bolt-on Acquisition. As a result of these regulatory changes and shift in operational focus, beginning with the second quarter of 2019, the Company grouped its FERC-regulated assets in two asset groupings: FERC-regulated transmission and storage assets and FERC-regulated low-pressure gathering assets. Upon the change in asset grouping, management evaluated whether any indicators of impairment were present and, in conjunction with the evaluation, the Company determined that the carrying values for the non-core FERC-regulated low-pressure gathering assets exceeded their undiscounted cash flows. Additionally, following the settlement related to the FERC Form 501-G report, management did not, and currently does not, plan to seek to recover the deficient cash flows through a future rate proceeding. The Company therefore estimated the fair values of FERC-regulated low-pressure gathering assets and determined that their fair values were not in excess of the assets’ carrying values, which resulted in recognized impairments of property and equipment of approximately $80.1 million during the second quarter of 2019 related to the assets within the Company's Gathering segment. As a result of the impairment, the assets carry no book value. The non-cash impairment charge is included in the impairments of long-lived assets line on the statements of consolidated comprehensive income.

The Company is also required to evaluate its equity method investments, including investments in the MVP Joint Venture, to determine whether they are impaired under ASC 323, Investments - Equity Method and Joint Ventures. The standard for determining whether an impairment must be recorded under ASC 323 is whether there occurred an other-than-temporary decline in value. The evaluation and measurement of impairments under ASC 323 involves the same uncertainties as described above for long-lived assets that the Company owns directly and accounts for in accordance with ASC 360. The estimates that the Company makes with respect to its equity method investments are based upon assumptions that management believes are reasonable, and the impact of variations in these estimates or the underlying assumptions could be material. Additionally, if the projects in which the Company holds these investments recognize an impairment under ASC 360, the Company would record its proportionate share of that impairment loss and would evaluate its investment for an other-than-temporary decline in value under ASC 323. The Company evaluated its equity method investments, including investments in the MVP Joint Venture, as of September 30, 2020 and determined that there was not an other-than-temporary decline in value.

There is risk that the carrying value of the Company's investments in the MVP Joint Venture may be impaired in the future. There are ongoing legal and regulatory matters that must be resolved favorably before the MVP and MVP Southgate projects

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can be completed. Assumptions and estimates utilized to test the Company’s investments in the MVP Joint Venture for impairment may change if adverse or delayed resolutions to these matters were to occur, which could have a material effect on the fair value of the Company's investments in the MVP Joint Venture.

5.    Financial Information by Business Segment

The Company reports its operations in three segments that reflect its three lines of business: Gathering, Transmission and Water. Gathering includes predominantly dry gas gathering systems of high-pressure gathering lines and FERC-regulated low-pressure gathering lines; Transmission includes FERC-regulated interstate pipelines and storage systems; and Water consists of the Company's water pipelines, impoundment facilities, pumping stations, take point facilities and measurement facilities.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Revenues from customers:
Gathering	$	232,651	$	299,491	$	764,229	$	847,038
Transmission	93,329		87,299		288,869		289,926
Water	24,020		21,644		90,605		67,419
Total operating revenues	$	350,000	$	408,434	$	1,143,703	$	1,204,383
Operating income (loss):
Gathering (a)	$	129,186	$	(98,489)	$	400,647	$	177,720
Transmission	63,460		59,690		201,714		207,684
Water	10,118		7,722		40,173		18,980
Headquarters (b)	(2,255)		(7,376)		(24,646)		(16,621)
Total operating income (loss)	$	200,509	$	(38,453)	$	617,888	$	387,763
Reconciliation of operating income (loss) to net income (loss):
Equity income (c)	$	60,917	$	44,448	$	171,233	$	112,293
Other income	21,864		70		39,006		2,637
Loss on early extinguishment of debt	—		—		24,864		—
Net interest expense	86,411		65,606		219,960		188,268
Income tax expense	28,440		1,948		81,846		45,868
Net income (loss)	$	168,439	$	(61,489)	$	501,457	$	268,557

(a)Impairments of long-lived assets of $298.7 million for the three months ended September 30, 2019 and $55.6 million and $378.8 million for the nine months ended September 30, 2020 and 2019, respectively, were included in Gathering operating income (loss). See Note 4 for further information.

(b)Includes separation and other transaction costs and other unallocated corporate expenses.

(c)Equity income is included in the Transmission segment.

	September 30, 2020		December 31, 2019
	(Thousands)
Segment assets:
Gathering	$	7,743,615	$	7,572,911
Transmission (a)	4,279,330		3,903,707
Water	208,899		202,440
Total operating segments	12,231,844		11,679,058
Headquarters, including cash	398,836		362,651
Total assets	$	12,630,680	$	12,041,709

(a)The equity investments in the MVP Joint Venture are included in the Transmission segment.

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	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Depreciation:
Gathering	$	44,648	$	38,943	$	126,915	$	104,502
Transmission	13,659		13,347		40,787		38,474
Water	8,105		6,907		22,720		19,801
Headquarters	360		263		849		3,953
Total	$	66,772	$	59,460	$	191,271	$	166,730
Capital expenditures for segment assets:
Gathering (a)	$	90,452	$	271,860	$	303,063	$	686,178
Transmission (b)	6,721		16,296		32,983		46,287
Water	2,530		13,466		8,377		31,490
Headquarters	447		1,068		3,234		6,787
Total (c)	$	100,150	$	302,690	$	347,657	$	770,742

(a)Includes approximately $13.5 million and $37.1 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2020, respectively, and includes approximately $6.7 million and $17.6 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2019, respectively.

(b)Transmission capital expenditures do not include capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of $65.6 million and $211.7 million for the three months ended September 30, 2020 and 2019, respectively, and $144.3 million and $512.9 million for the nine months ended September 30, 2020 and 2019, respectively.

(c)The Company accrues capital expenditures when the work has been completed but the associated bills have not yet been paid. Accrued capital expenditures are excluded from the statements of consolidated cash flows until they are paid. The net impact of non-cash capital expenditures, including the effect of accrued capital expenditures, assumed capital expenditures associated with the Bolt-on Acquisition, transfers from inventory as assets are assigned to a project and capitalized share-based compensation costs, was $8.3 million and $(15.3) million for the three months ended September 30, 2020 and 2019, respectively, and $29.9 million and $(0.8) million for the nine months ended September 30, 2020 and 2019, respectively.

6.    Revenue from Contracts with Customers

For the three and nine months ended September 30, 2020 and 2019, all revenues recognized on the Company's statements of consolidated comprehensive income are from contracts with customers. As of September 30, 2020 and December 31, 2019, all receivables recorded on the Company's consolidated balance sheets represent performance obligations that have been satisfied and for which an unconditional right to consideration exists.

Summary of Disaggregated Revenues. The tables below provide disaggregated revenue information by business segment.

	Three Months Ended September 30, 2020
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	145,533	$	84,612	$	9,005	$	239,150
Volumetric-based fee revenues	87,118		8,717		15,015		110,850
Total operating revenues	$	232,651	$	93,329	$	24,020	$	350,000
	Three Months Ended September 30, 2019
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues	$	154,791	$	81,990	$	840	$	237,621
Volumetric-based fee revenues	144,700		5,309		20,804		170,813
Total operating revenues	$	299,491	$	87,299	$	21,644	$	408,434

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	Nine Months Ended September 30, 2020
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	446,721	$	267,973	$	32,788	$	747,482
Volumetric-based fee revenues	317,508		20,896		57,817		396,221
Total operating revenues	$	764,229	$	288,869	$	90,605	$	1,143,703
	Nine Months Ended September 30, 2019
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues	$	431,520	$	263,051	$	4,531	$	699,102
Volumetric-based fee revenues	415,518		26,875		62,888		505,281
Total operating revenues	$	847,038	$	289,926	$	67,419	$	1,204,383

(a)    For the three months ended September 30, 2020, firm reservation fee revenues associated with Gathering and Water included approximately $2.6 million and $1.9 million, respectively, of MVC unbilled revenues. For the nine months ended September 30, 2020, firm reservation fee revenues associated with Gathering and Water included approximately $13.7 million and $11.4 million, respectively, of MVC unbilled revenues. There were no MVC unbilled revenues associated with Gathering and Water during the three and nine months ended September 30, 2019.

Contract Assets. The Company recognizes contract assets in instances where billing occurs subsequent to revenue recognition and the Company's right to invoice the customer is conditioned on something other than the passage of time. The Company's contract assets primarily consist of revenue recognized under contracts containing MVCs whereby management has concluded (i) it is probable there will be a MVC deficiency payment at the end of the then-current MVC period, which is typically the period beginning at the inception of such contracts through the successive twelve month periods after that date, and (ii) that a significant reversal of revenue recognized currently for the future MVC deficiency payment will not occur. As a result, the Company's contract assets related to the Company's future MVC deficiency payments are generally expected to be collected within the next twelve months and are included in other current assets in the Company's consolidated balance sheets until such time as the MVC deficiency payments are invoiced to the customer.

The following table presents changes in the Company's unbilled revenue balance during the nine months ended September 30, 2020:

	Unbilled Revenue
	(Thousands)
Balance as of January 1, 2020	$	—
Revenue recognized in excess of amounts invoiced (a)	25,086
Minimum volume commitments invoiced (b)	—
Balance as of September 30, 2020	$	25,086

(a)Revenues associated with unbilled MVCs are included in firm reservation fee revenues within the Gathering and Water segments, as described in the Summary of Disaggregated Revenues table above.

(b)Unbilled revenues are transferred to accounts receivable once the Company has an unconditional right to consideration from the customer.

Contract Liabilities. As of September 30, 2020, the Company's contract liabilities consist of deferred revenue associated with the EQT Global GGA, including advance payments from EQT associated with the Rate Relief Shares (as defined below) acquired by the Company as consideration for certain commercial terms and the initial fair value of the Henry Hub cash bonus payment provision (as defined below). The contract liabilities are classified as current or non-current according to when such amounts are expected to be recognized. As of September 30, 2020, the contract liabilities are classified as non-current as none of the deferred revenue is expected to be recognized in revenue during the next five years.

Contracts requiring advance payments and the recognition of contract liabilities are evaluated to determine whether the advance payments provide the Company with a significant financing benefit. This determination requires significant judgment and is based on the combined effect of the expected length of time between when the Company transfers the promised good or service to the customer and when the customer pays for those goods or services and the prevailing interest rates. The Company has assessed the EQT Global GGA and determined that this agreement does not contain a significant financing component.

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The following table presents changes in the Company's deferred revenue balances during the nine months ended September 30, 2020:

	Deferred Revenue
	(Thousands)
Balance as of January 1, 2020	$	—
Amounts recorded during the period (a)	321,775
Amounts transferred during the period (b)	—
Balance as of September 30, 2020	$	321,775

(a)Includes deferred billed revenue of approximately $74.6 million and $148.8 million recorded during the three and nine months ended September 30, 2020, respectively, associated with the EQT Global GGA.

(b)Deferred revenues are recognized as revenue upon satisfaction of the Company's performance obligation to the customer.

Summary of Remaining Performance Obligations. The following table summarizes the estimated transaction price allocated to the Company's remaining performance obligations under all contracts with firm reservation fees and MVCs as of September 30, 2020 that the Company will invoice or transfer from contract liabilities and recognize in future periods.

		2020(a)		2021		2022		2023		2024		Thereafter		Total
	(Thousands)
Gathering firm reservation fees		$	22,081	$	106,127	$	158,721	$	158,628	$	157,127	$	1,433,923	$	2,036,607
Gathering revenues supported by MVCs		125,591		526,413		585,384		617,532		635,649		5,367,726		7,858,295
Transmission firm reservation fees		94,112		360,242		380,890		342,566		282,962		2,609,294		4,070,066
Water revenues supported by MVCs		9,006		16,521		60,000		60,000		60,000		105,000		310,527
Total (b)		$	250,790	$	1,009,303	$	1,184,995	$	1,178,726	$	1,135,738	$	9,515,943	$	14,275,495

(a)    October 1, 2020 through December 31, 2020.

(b)    Includes assumptions regarding timing for placing certain projects, including the MVP, in-service. Delays in the in-service dates for projects may substantially alter the remaining performance obligations for certain contracts with firm reservation fees and/or MVCs.

Based on total projected contractual revenues, including projected contractual revenues from future capacity expected from expansion projects that are not yet fully constructed for which the Company has executed firm contracts, the Company's firm gathering contracts and firm transmission and storage contracts had weighted average remaining terms of approximately 15 years and 14 years, respectively, as of September 30, 2020.

EQT Global GGA. On the EQT Global GGA Effective Date, the Company (through EQM) entered into the EQT Global GGA with EQT for the provision by the Company of certain gas gathering services to EQT in the Marcellus and Utica Shales of Pennsylvania and West Virginia. Pursuant to the EQT Global GGA, EQT is subject to an initial annual MVC of 3.0 Bcf per day that gradually steps up to 4.0 Bcf per day for several years following the in-service date of the MVP. The EQT Global GGA runs from the EQT Global GGA Effective Date through December 31, 2035, and will renew annually thereafter unless terminated by EQT or the Company pursuant to its terms. Pursuant to the EQT Global GGA, the Company has certain obligations to build connections to connect EQT wells to its gathering system, which are subject to geographical limitations in relation to the dedicated area in Pennsylvania and West Virginia, as well as the distance of such connections to the Company's then-existing gathering system. Management has estimated the total consideration expected to be received over the life of the EQT Global GGA, including gathering MVC revenue with a declining rate structure, the fair value of the Rate Relief Shares and the initial fair value of the Henry Hub cash bonus payment provision. The total consideration is allocated proportionally to the performance obligation under the contract, which is to provide daily MVC capacity over the life of the contract, in order to recognize revenue in accordance with ASC 606, Revenue from Contracts with Customers. The performance obligations will be satisfied during the life of the contract based on a units of production methodology for the daily MVC capacity provided to EQT. Due to the declining rate structure, there will be periods during which the billable gathering MVC revenue will exceed the allocated consideration to the performance obligation, which will result in billable gathering MVC revenue being deferred to the contract liability. The deferred consideration amounts are deferred until recognized in revenue when the associated performance obligation has been satisfied and are classified as current or non-current according to when such amounts are expected to be recognized. In addition to the estimated total consideration allocated to the daily MVC, the EQT Global GGA includes other fees based on variable or volumetric-based services that will be recognized in the period the services are provided.

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The EQT Global GGA provides for potential cash bonus payments payable by EQT to the Company during the period beginning on the first day of the calendar quarter in which the MVP in-service date occurs through the earlier of the twelfth calendar quarter from that point or the calendar quarter ending December 31, 2024 (the Henry Hub cash bonus payment provision). The potential cash bonus payments are conditioned upon the quarterly average of certain Henry Hub natural gas prices exceeding certain price thresholds. The Henry Hub cash bonus payment provision meets the definition of an embedded derivative that should be bifurcated from the host contract and accounted for separately in accordance with ASC 815, Derivatives and Hedging. The embedded derivative was recorded as a derivative asset at its estimated fair value at inception of approximately $51.5 million and as part of the contract liability to be included in the total consideration to be allocated to the performance obligation under ASC 606. Subsequent changes to the fair value of the derivative instrument through the end of the contract are recognized in other income on the Company's statements of consolidated comprehensive income.

The gathering MVC fees payable by EQT (or its affiliates) to the Company set forth in the EQT Global GGA are subject to potential reductions for certain contract years as set forth in the EQT Global GGA, conditioned upon the in-service date of the MVP, which provide for estimated aggregate fee relief of approximately $270 million in the first year after the in-service date of the MVP, approximately $230 million in the second year after the in-service date of the MVP and approximately $35 million in the third year after the in-service date of the MVP. In addition, if the MVP in-service date has not occurred by January 1, 2022, EQT has an option, exercisable for a period of twelve months (or such shorter period if the in-service date of the MVP occurs), to forgo approximately $145 million of the gathering fee relief in the first year after the MVP in-service date and approximately $90 million of the gathering fee relief in the second year after the MVP in-service date in exchange for a cash payment from the Company (through EQM) to EQT in the amount of approximately $196 million (the EQT Cash Option). As consideration for the additional rate relief subject to the EQT Cash Option, the Company purchased shares of its common stock (see Rate Relief Shares discussed and defined below) from EQT. The consideration received for future contractual rate relief associated with the Rate Relief Shares was recorded at a fair value of approximately $121.5 million as a contract liability in accordance with ASC 606 and will be recognized as revenue over the life of the contract.

Water Services Letter Agreement. On February 26, 2020, the Company (through EQM) entered into a letter agreement with EQT, pursuant to which EQT agreed to utilize the Company for the provision of water services in Pennsylvania under existing water services agreements and new water services agreements if negotiated between the parties (such letter agreement, the Water Services Letter Agreement). The Water Services Letter Agreement is effective as of the first day of the first month following the MVP in-service date and shall expire on the fifth anniversary of such date. During each year of the Water Services Letter Agreement, EQT agreed that fixed MVC fees payable to the Company for water services incurred on a volumetric basis, provided in accordance with existing agreements and new agreements entered into between the parties pursuant to the Water Services Letter Agreement (or the related agreements), shall be equal to or greater than $60 million per year.

Share Purchase Agreements. On February 26, 2020, the Company entered into two share purchase agreements (the Share Purchase Agreements) with EQT, pursuant to which the Company agreed to (i) purchase 4,769,496 shares of Equitrans Midstream common stock (the Cash Shares) from EQT in exchange for approximately $46 million in cash, (ii) purchase 20,530,256 shares of Equitrans Midstream common stock (the Rate Relief Shares and, together with the Cash Shares, the Share Purchases) from EQT in exchange for a promissory note in the aggregate principal amount of approximately $196 million (which EQT subsequently assigned to EQM as consideration for certain commercial terms under the EQT Global GGA), and (iii) pay EQT cash in the amount of approximately $7 million (the Cash Amount). On March 5, 2020, the Company completed the Share Purchases and paid the Cash Amount. The Company used proceeds from the EQM Credit Facility (defined in Note 9) to fund the purchase of the Cash Shares and to pay the Cash Amount in addition to other uses of proceeds. After the closing of the Share Purchases, the Company retired the Cash Shares and the Rate Relief Shares. Additionally, the Company recorded a $17.2 million deferred tax liability in conjunction with the Rate Relief Shares. On September 29, 2020, the Company made a prepayment to EQM of all principal, interest, fees and other obligations outstanding under the promissory note EQT assigned to EQM and the promissory note was terminated.

7.    Related Party Transactions

Related Party Transactions with EQT

As of September 30, 2020, EQT remained a related party of the Company due to its ownership of 25,296,026 shares of Equitrans Midstream common stock, which represented an approximately 5.9% ownership interest in the Company, excluding the impact of the Equitrans Midstream Preferred Shares. In the ordinary course of business, the Company engaged, and continues to engage, as applicable, in transactions with EQT and its affiliates, including, but not limited to, gathering agreements, transportation service and precedent agreements, storage agreements and water services agreements.

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Operating revenues included related party revenues from EQT of approximately $222.7 million and $275.4 million for the three months ended September 30, 2020 and 2019, respectively, and $741.2 million and $843.9 million for the nine months ended September 30, 2020 and 2019, respectively. Operating and maintenance expense included charges to EQT of approximately $2.4 million for both the three and nine months ended September 30, 2019. Selling, general and administrative expense included charges from EQT of approximately $1.0 million for both the three and nine months ended September 30, 2019. Additionally, net interest expense included interest income on the Preferred Interest in EES of approximately $1.5 million and $1.6 million for the three months ended September 30, 2020 and 2019, respectively, and $4.6 million and $4.8 million for the nine months ended September 30, 2020 and 2019, respectively.

Accounts receivable as of September 30, 2020 and December 31, 2019 included approximately $194.3 million and $175.2 million, respectively, of related party accounts receivable from EQT. Other current assets as of September 30, 2020 included approximately $11.4 million of MVC unbilled revenue from EQT. In addition, as of September 30, 2020, the Preferred Interest in EES was approximately $106.3 million, of which $5.2 million was recorded in other current assets and $101.1 million was recorded in other assets on the Company's consolidated balance sheets. As of December 31, 2019, the Preferred Interest in EES was approximately $110.1 million, of which $5.0 million was recorded in other current assets and $105.1 million was recorded in other assets on the Company's consolidated balance sheets.

Tax Matters Agreement. On November 12, 2018, in connection with the Separation and Distribution, the Company and EQT entered into a tax matters agreement that governs the parties' respective rights, responsibilities and obligations with respect to taxes (including taxes arising in the ordinary course of business and taxes, if any, incurred as a result of any failure of the Distribution and certain related transactions to qualify as generally tax-free for U.S. federal income tax purposes), tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings and assistance and cooperation with respect to tax matters (the Tax Matters Agreement). In addition, the Tax Matters Agreement imposes certain restrictions on the Company and its subsidiaries, including restrictions on certain equity issuances, business combinations, sales of assets and similar transactions, that are designed to preserve the tax-free status of the Distribution and certain related transactions.

The Tax Matters Agreement provides special rules that allocate tax liabilities in the event that the Distribution, together with certain related transactions, is not tax-free. In general, under the Tax Matters Agreement, each party is expected to be responsible for any taxes, whether imposed on the Company or EQT, that arise (i) from the failure of the Distribution, together with certain related transactions, to qualify for tax-free treatment, or (ii) if certain related transactions were to fail to qualify for their intended tax treatment, in each case, to the extent that the failure to qualify is attributable to actions, events or transactions relating to such party's respective stock, assets or business or a breach of the relevant representations or covenants made by that party in the Tax Matters Agreement.

Credit Letter Agreement. On February 26, 2020, in connection with the execution of the EQT Global GGA, the Company (through EQM) and EQT entered into a letter agreement (the Credit Letter Agreement) pursuant to which, among other things, (a) the Company agreed to relieve certain credit posting requirements for EQT, in an amount up to approximately $250 million, under its commercial agreements with the Company, subject to EQT maintaining a minimum credit rating from two of three rating agencies of (i) Ba3 with Moody’s Investors Service (Moody's), (ii) BB- with S&P Global Ratings (S&P) and (iii) BB- with Fitch Investor Services (Fitch) and (b) the Company agreed to use commercially reasonable good faith efforts to negotiate similar credit support arrangements for EQT in respect of its commitments to the MVP Joint Venture.

EQT Global GGA. See Notes 4 and 6 for further detail.

Water Services Letter Agreement. See Note 6 for further detail.

Share Purchase Agreements. See Note 6 for further detail.

8.    Investments in Unconsolidated Entity

The MVP Joint Venture is constructing the MVP, an estimated 300-mile natural gas interstate pipeline that will span from northern West Virginia to southern Virginia. The Company will operate the MVP and owned a 45.9% interest in the MVP project as of September 30, 2020. On November 4, 2019, Con Edison exercised an option to cap its investment in the MVP project at approximately $530 million (excluding AFUDC). The Company and NextEra Energy, Inc. are obligated to, and RGC Resources, Inc., another member of the MVP Joint Venture owning an interest in the MVP project, has opted to, fund the shortfall in Con Edison's capital contributions, on a pro rata basis. Such funding by the Company and funding by other members has and will correspondingly increase the Company's and such other funding members' respective interests in the MVP project and decrease Con Edison's interest in the MVP project. As a result, based on the midpoint of the project's $5.8 billion to $6.0 billion (excluding AFUDC) targeted cost, the Company's equity ownership in the MVP project will progressively increase from approximately 45.9% to approximately 47.6%. The MVP Joint Venture is a variable interest entity because it has insufficient equity to finance its activities during the construction stage of the project. The Company is not the primary

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beneficiary of the MVP Joint Venture because the Company does not have the power to direct the activities that most significantly affect the MVP Joint Venture's economic performance. Certain business decisions, such as decisions to make distributions of cash, require a greater than 66 2/3% ownership interest approval, and no one member owns more than a 66 2/3% interest.

In April 2018, the MVP Joint Venture announced the MVP Southgate project, a proposed 75-mile interstate pipeline that will extend from the MVP at Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina. The Company will operate the MVP Southgate pipeline and owned a 47.2% interest in the MVP Southgate project as of September 30, 2020.

In September 2020, the MVP Joint Venture issued a capital call notice for the funding of the MVP project to MVP Holdco, LLC (MVP Holdco), a wholly owned subsidiary of the Company, for $126.6 million, of which $14.4 million and $112.2 million was paid in October 2020 and November 2020, respectively. In September 2020, the MVP Joint Venture issued a capital call notice for the funding of the MVP Southgate project to MVP Holdco for $0.7 million, which was paid in October 2020. In addition, in October 2020, the MVP Joint Venture issued a capital call notice for the funding of the MVP Southgate project to MVP Holdco for $0.3 million, which is expected to be paid in November 2020. The capital contributions payable and the corresponding increase to the investment balance are reflected on the consolidated balance sheet as of September 30, 2020.

The Company's interests in the MVP and MVP Southgate projects are equity method investments for accounting purposes because the Company has the ability to exercise significant influence, but not control, over the MVP Joint Venture's operating and financial policies. Accordingly, the Company records adjustments to the investment balance for contributions to or distributions from the MVP Joint Venture and for the Company's pro-rata share of MVP Joint Venture earnings.

Equity income, which is primarily related to the Company's pro-rata share of the MVP Joint Venture's AFUDC on the construction of the MVP, is reported in equity income in the Company's statements of consolidated comprehensive income.

Pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances, which may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral, in favor of the MVP Joint Venture to provide assurance as to the funding of MVP Holdco's proportionate share of the construction budget for the MVP project. In 2019, EQM issued performance guarantees in an amount equal to 33% of MVP Holdco's proportionate share of the then-remaining construction budget for the MVP project. As of December 31, 2019, EQM's performance guarantee was approximately $223 million, adjusted for capital contributions made by EQM during the fourth quarter of 2019.

In addition, pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances in respect of MVP Southgate, which performance assurances may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral. In 2019, EQM issued a performance guarantee of $14 million in favor of the MVP Joint Venture for the MVP Southgate project.

As a result of EQM’s credit rating downgrades in the first quarter of 2020, EQM delivered replacement credit support to the MVP Joint Venture in the form of letters of credit in the amounts of approximately $220.2 million and $14.2 million with respect to the MVP project and MVP Southgate project, respectively. In connection with delivering such letters of credit as replacement performance assurances, EQM's performance guarantees associated with the MVP and MVP Southgate projects were terminated. As of September 30, 2020, the letters of credit with respect to the MVP project and MVP Southgate project were in the amounts of approximately $220.2 million and $14.2 million, respectively. As of November 3, 2020, based on the midpoint of the targeted project cost, MVP Holdco's obligation to deliver a replacement letter of credit with respect to the MVP project was in the amount of approximately $231.2 million. Upon the FERC’s initial release to begin construction of the MVP Southgate project, the Company’s current letter of credit to support MVP Southgate will be terminated, and the Company will be obligated to deliver a new letter of credit (or provide another allowable form of performance assurance) in an amount equal to 33% of MVP Holdco’s proportionate share of the remaining capital obligations for the MVP Southgate project under the applicable construction budget.

As of September 30, 2020, the Company's maximum financial statement exposure related to the MVP Joint Venture was approximately $2,829 million, which consisted of the investment in unconsolidated entity balance on the consolidated balance sheet as of September 30, 2020, net of capital contributions payable, and the letters of credit outstanding under the Amended EQM Credit Facility. As of November 3, 2020, in conjunction with MVP Holdco's obligation to deliver a replacement letter of credit with respect to the MVP project, the Company's maximum financial statement exposure related to the MVP Joint Venture was approximately $2,967 million.

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The following tables summarize the unaudited condensed consolidated financial statements of the MVP Joint Venture in relation to the MVP project.

Condensed Consolidated Balance Sheets

	September 30, 2020		December 31, 2019
	(Thousands)
Current assets	$	290,541	$	102,638
Non-current assets	5,540,846		4,951,521
Total assets	$	5,831,387	$	5,054,159
Current liabilities	$	187,826	$	223,645
Equity	5,643,561		4,830,514
Total liabilities and equity	$	5,831,387	$	5,054,159

Condensed Statements of Consolidated Operations

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Environmental remediation reserve	$	20	$	(516)	$	(295)	$	(2,682)
Other income	13		1,165		275		5,863
Net interest income	39,280		29,100		110,868		73,035
AFUDC — equity	91,653		67,902		258,693		170,416
Net income	$	130,966	$	97,651	$	369,541	$	246,632

9.    Debt

Equitrans Midstream Term Loan Facility. In December 2018, Equitrans Midstream entered into a term loan credit agreement (as amended in May 2019, the ETRN Term Loan Credit Agreement) that provided for a senior secured term loan facility in an aggregate principal amount of $600 million (the ETRN Term Loans). The Company received net proceeds from the ETRN Term Loans of $568.1 million, inclusive of a discount of $18.0 million and estimated debt issuance costs of $13.9 million. The net proceeds were primarily used to fund the purchase of the public EQGP Common Units (the EQGP Buyout), including certain fees, costs and expenses in connection therewith, and the remainder was used for general corporate purposes. On March 3, 2020, EQM drew $650.0 million under the Amended EQM Credit Facility and transferred such funds to the Company, pursuant to a senior unsecured term loan agreement with the Company. The Company utilized a portion of such funds to pay off amounts outstanding under the ETRN Term Loans and the ETRN Term Loan Credit Agreement was terminated. As a result, the Company wrote off $24.4 million of unamortized discount and financing costs related to the ETRN Term Loan Credit Agreement. The write off charge is included in the loss on early extinguishment of debt line on the statements of consolidated comprehensive income. On September 29, 2020, the Company made a prepayment to EQM of all principal, interest, fees and other obligations outstanding under the senior unsecured term loan agreement and terminated the agreement. As of December 31, 2019, the current portion of the ETRN Term Loans was $6.0 million and was recorded in the current portion of long-term debt on the consolidated balance sheet. The Company had $594.0 million of borrowings outstanding and no letters of credit outstanding under the ETRN Term Loan Credit Agreement as of December 31, 2019. During the period from January 1, 2020 to March 3, 2020, the weighted average annual interest rate was approximately 6.2%. For the three and nine months ended September 30, 2019, the weighted average annual interest rates were approximately 6.8% and 6.9%, respectively.

Equitrans Midstream Credit Facility. In October 2018, Equitrans Midstream entered into a senior secured revolving credit facility agreement that provided for $100 million in borrowing capacity (the Equitrans Midstream Credit Facility). Equitrans Midstream amended the Equitrans Midstream Credit Facility on December 31, 2018 to, among other things, permit the incurrence of the borrowings under the ETRN Term Loan Credit Agreement. The Equitrans Midstream Credit Facility, which was available for general corporate purposes and to fund ongoing working capital requirements, was terminated on March 3, 2020 in conjunction with the Company's termination of the ETRN Term Loan Credit Agreement (see above). As a result, the Company wrote off $0.5 million of unamortized financing costs related to the Equitrans Midstream Credit Facility. The write off charge is included in the loss on early extinguishment of debt line on the statements of consolidated comprehensive income.

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The Company had no borrowings and no letters of credit outstanding under the Equitrans Midstream Credit Facility as of December 31, 2019 and during the period from January 1, 2020 to March 3, 2020. There were no borrowings on the Equitrans Midstream Credit Facility during the three months ended September 30, 2019. For the nine months ended September 30, 2019, the maximum outstanding borrowings was approximately $44 million, the average daily balance was approximately $4 million and the weighted average annual interest rate was approximately 4.3%. Commitment fees paid to maintain credit availability under the credit facility were approximately $0.1 million for the period from January 1, 2020 to March 3, 2020, and approximately $0.1 million and $0.3 million for the three and nine months ended September 30, 2019, respectively.

Amended EQM Revolving Credit Facility and Amended 2019 EQM Term Loan Agreement. On October 31, 2018, EQM amended and restated its unsecured revolving credit facility to increase the borrowing capacity from $1 billion to $3 billion and extend the term to October 2023 (the EQM Credit Facility). In August 2019, EQM entered into a term loan agreement (the 2019 EQM Term Loan Agreement) that provided for unsecured term loans (the EQM Term Loans) in an aggregate principal amount of $1.4 billion.

Additionally, on March 30, 2020, EQM entered into (i) an amendment to the EQM Credit Facility (as amended, the Amended EQM Credit Facility) and (ii) an amendment to the 2019 EQM Term Loan Agreement (as amended, the Amended 2019 EQM Term Loan Agreement) which, among other things, amended certain defined terms and negative covenants in the EQM Credit Facility and the 2019 EQM Term Loan Agreement.

The Amended EQM Credit Facility is available for general partnership purposes, including to purchase assets, to fund working capital requirements and capital expenditures and to pay distributions. Subject to satisfaction of certain conditions, the Amended EQM Credit Facility has an accordion feature that allows EQM to increase the available borrowings under the facility by up to an additional $750 million. The Amended EQM Credit Facility has a sublimit of up to $250 million for same-day swing line advances and a sublimit of up to $400 million for letters of credit. In addition, EQM has the ability to request that one or more lenders make available term loans under the Amended EQM Credit Facility, subject to the satisfaction of certain conditions. As of September 30, 2020, no term loans were outstanding under the Amended EQM Credit Facility. Such term loans would be secured by cash, qualifying investment grade securities or a combination thereof.

Under the terms of the Amended EQM Credit Facility, EQM can obtain committed loans as Base Rate Loans (as defined in the Amended EQM Credit Facility) or Eurodollar Rate Loans (as defined in the Amended EQM Credit Facility). Base Rate Loans are denominated in dollars and bear interest at a base rate plus a margin of 0.125% to 1.750% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings by Moody’s, S&P and Fitch. Eurodollar Rate Loans bear interest at a Eurodollar Rate (as defined in the Amended EQM Credit Facility) plus a margin of 1.125% to 2.750% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings with Moody’s, S&P and Fitch. EQM may voluntarily prepay its borrowings under the Amended EQM Credit Facility, in whole or in part, without premium or penalty, but subject to reimbursement of funding losses with respect to certain prepayments of Eurodollar Rate Loans. Revolving amounts prepaid under the Amended EQM Credit Facility may be re-borrowed.

As of September 30, 2020, EQM had approximately $485 million of borrowings and $235 million of letters of credit outstanding under the Amended EQM Credit Facility. As of December 31, 2019, EQM had approximately $610 million of borrowings and $1 million of letters of credit outstanding under the Amended EQM Credit Facility. During the three and nine months ended September 30, 2020, the maximum outstanding borrowings at any time were approximately $485 million and $2,040 million, respectively, and the average daily balances were approximately $485 million and $975 million, respectively. EQM incurred interest at weighted average annual interest rates of approximately 2.6% and 2.9% for the three and nine months ended September 30, 2020, respectively. During the three and nine months ended September 30, 2019, the maximum outstanding borrowings at any time was approximately $1,690 million for both periods, the average daily balances were approximately $865 million and $950 million, respectively, and the weighted average annual interest rates were approximately 3.7% and 3.8%, respectively. For the three and nine months ended September 30, 2020, commitment fees of $2.4 million and $5.0 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility. For the three and nine months ended September 30, 2019, commitment fees of $1.2 million and $3.3 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility.

The EQM Term Loans mature in August 2022. EQM received net proceeds from the issuance of the EQM Term Loans of $1,397.4 million, inclusive of debt issuance costs of $2.6 million. The net proceeds were primarily used to repay borrowings under the Amended EQM Credit Facility and the remainder was used for general partnership purposes. The Amended 2019 EQM Term Loan Agreement provides EQM with the right to request incremental term loans in an aggregate amount of up to $300 million, subject to, among other things, obtaining additional commitments from existing lenders or commitments from new lenders. As of September 30, 2020 and December 31, 2019, EQM had $1.4 billion of borrowings outstanding under the Amended 2019 EQM Term Loan Agreement for both periods. During the three and nine months ended September 30, 2020, the weighted average annual interest rates for the periods were approximately 2.4% and 2.8%, respectively. During the applicable

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portion of the two months ended September 30, 2019, the weighted average annual interest rate for the period was approximately 3.6%.

Under the terms of the Amended 2019 EQM Term Loan Agreement, EQM can obtain Base Rate Loans (as defined in the Amended 2019 EQM Term Loan Agreement) or Eurodollar Rate Loans (as defined in the Amended 2019 EQM Term Loan Agreement). Base Rate Loans are denominated in dollars and bear interest at a base rate plus a margin of 0.000% to 1.625% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings with Moody’s, S&P and Fitch. Eurodollar Rate Loans bear interest at a Eurodollar Rate (as defined in the Amended 2019 EQM Term Loan Agreement) plus a margin of 1.000% to 2.625% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings with Moody’s, S&P and Fitch. EQM may voluntarily prepay its borrowings under the Amended 2019 EQM Term Loan Agreement, in whole or in part, without premium or penalty, but subject to reimbursement of funding losses with respect to certain prepayments of Eurodollar Rate Loans. Amounts prepaid under the Amended 2019 EQM Term Loan Agreement may not be reborrowed.

The Amended EQM Credit Facility and the Amended 2019 EQM Term Loan Agreement each contain certain negative covenants, that, among other things, limit the ability of EQM and certain of its subsidiaries to incur or permit liens on assets, establish a maximum consolidated leverage ratio that varies over the course of the term ranging from not more than 5.75 to 1.00 to not more than 5.00 to 1.00 tested as of the end of each fiscal quarter (which in limited circumstances is increased for certain measurement periods following the consummation of certain acquisitions), limit transactions with affiliates, mergers and other fundamental changes, asset dispositions, the incurrence of new debt and entry into burdensome agreements, in each case and as applicable, subject to certain specified exceptions. The Amended EQM Credit Facility and the Amended 2019 EQM Term Loan Agreement each also contains certain specified events of default, including, among others, failure to make certain payments (subject to specified grace periods in some cases), failure to observe covenants (subject to specified grace periods in some cases), cross-defaults to certain other material debt, certain specified insolvency or bankruptcy events and the occurrence of a change of control event, in each case, the occurrence of which would allow the lenders to accelerate EQM’s payment obligations under the Amended EQM Credit Facility or the Amended 2019 EQM Term Loan Agreement, as applicable.

Eureka Credit Facility. Eureka Midstream, LLC (Eureka), a wholly owned subsidiary of Eureka Midstream, has a $400 million senior secured revolving credit facility that is available for general business purposes, including financing maintenance and expansion capital expenditures related to the Eureka system and providing working capital for Eureka’s operations (as amended, the Eureka Credit Facility). The Eureka Credit Facility matures on August 25, 2021. Subject to satisfaction of certain conditions, the Eureka Credit Facility has an accordion feature that allows Eureka to increase the available borrowings under the facility to an amount no greater than $500 million.

As of September 30, 2020 and December 31, 2019, Eureka had approximately $303 million and $293 million, respectively, of borrowings outstanding under the Eureka Credit Facility. For the three and nine months ended September 30, 2020, the maximum amount of outstanding borrowings under the Eureka Credit Facility at any time was approximately $323 million for both periods, the average daily balances were approximately $310 million and $300 million, respectively, and Eureka incurred interest at weighted average annual interest rates of approximately 2.4% and 2.6%, respectively. For the three months ended September 30, 2019 and for the period from April 10, 2019 through September 30, 2019, the maximum amount of outstanding borrowings under the Eureka Credit Facility at any time was approximately $293 million for both periods, the average daily balances were approximately $293 million and $285 million, respectively, and Eureka incurred interest at a weighted average annual interest rate of approximately 4.3% for both periods. For the three and nine months ended September 30, 2020, commitment fees of $0.1 million and $0.4 million, respectively, were paid to maintain credit availability under the Eureka Credit Facility. For the three months ended September 30, 2019 and for the period from April 10, 2019 through September 30, 2019, commitment fees of $0.1 million and $0.2 million, respectively, were paid to maintain credit availability under the Eureka Credit Facility.

2020 Senior Notes. During the second quarter of 2020, EQM issued $700 million aggregate principal amount of new 6.000% senior unsecured notes due July 1, 2025 and $900 million aggregate principal amount of new 6.500% senior unsecured notes due July 1, 2027 (collectively, the 2020 Senior Notes) and received net proceeds from the offering of approximately $1,576.1 million, inclusive of a discount of $20.0 million and debt issuance costs of $3.9 million. The net proceeds were used to repay a portion of the borrowings outstanding under the Amended EQM Credit Facility, and the remainder was used for general partnership purposes.

The 2020 Senior Notes were issued under and are governed by an indenture, dated June 18, 2020 (the 2020 Indenture), between EQM and the Bank of New York Mellon Trust Company, N.A., as trustee. The 2020 Indenture contains covenants that limit EQM's ability to, among other things, incur certain liens securing indebtedness, engage in certain sale and leaseback transactions, and enter into certain consolidations, mergers, conveyances, transfers or leases of all or substantially all of EQM's assets. Upon the occurrence of a Change of Control Triggering Event (as defined in the 2020 Indenture), EQM may be required

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to offer to purchase the 2020 Senior Notes at a purchase price equal to 101% of the aggregate principal amount of the 2020 Senior Notes repurchased, plus accrued and unpaid interest, if any, to, but excluding, the repurchase date.

The 2020 Senior Notes are unsecured and rank equally with all of EQM’s existing and future senior obligations. The 2020 Senior Notes are senior in right of payment to any of EQM’s future obligations that are, by their terms, expressly subordinated in right of payment to the 2020 Senior Notes. The 2020 Senior Notes are effectively subordinated to EQM’s secured obligations, if any, to the extent of the value of the collateral securing such obligations, and structurally subordinated to all indebtedness and obligations, including trade payables, of EQM’s subsidiaries, other than any subsidiaries that may guarantee the 2020 Senior Notes in the future.

As of September 30, 2020, EQM and Eureka were in compliance with all debt provisions and covenants.

10.    Fair Value Measurements

Assets Measured at Fair Value on a Recurring Basis. The Company records derivative instruments at fair value on a gross basis in its consolidated balance sheets. The Henry Hub cash bonus payment provision, as described in Note 6, is recorded at its estimated fair value using a Monte Carlo simulation model. Significant inputs used in the fair value measurement include NYMEX Henry Hub natural gas futures prices as of the date of valuation, risk-free interest rates based on U.S. Treasury rates, expected volatility of NYMEX Henry Hub natural gas futures prices and an estimated credit spread of EQT. The expected volatility of NYMEX Henry Hub natural gas futures prices used in the valuation methodology represents a significant unobservable input causing the Henry Hub cash bonus payment provision to be designated as a Level 3 fair value measurement. As of September 30, 2020, the fair value of the Henry Hub cash bonus payment provision was $89.2 million, of which $35.3 million was recorded in other current assets and $53.9 million was recorded in other assets on the Company's consolidated balance sheets. During the three and nine months ended September 30, 2020, the Company recognized gains of $21.0 million and $37.7 million, respectively, representing the change in estimated fair value of the derivative instrument during the applicable period. The gain is reflected in other income in the Company's statements of consolidated comprehensive income.

Other Financial Instruments. The carrying values of cash and cash equivalents, accounts receivable, amounts due to/from related parties and accounts payable approximate fair value due to the short maturity of the instruments; as such, their fair values are Level 1 fair value measurements. The carrying values of borrowings under the Amended EQM Credit Facility, the Eureka Credit Facility and the Amended 2019 EQM Term Loan Agreement approximate fair value as the interest rates are based on prevailing market rates; these are considered Level 1 fair value measurements. As EQM's borrowings under its senior notes are not actively traded, their fair values are estimated using an income approach model that applies a discount rate based on prevailing market rates for debt with similar remaining time-to-maturity and credit risk; as such, their fair values are Level 2 fair value measurements. Effective on March 3, 2020, the ETRN Term Loans were paid off with proceeds from the Amended EQM Credit Facility (see Note 9), and the ETRN Term Loan Credit Agreement was terminated. As of December 31, 2019, the estimated fair value of the ETRN Term Loans was approximately $595 million and the carrying value of the ETRN Term Loans was approximately $568 million. As of September 30, 2020 and December 31, 2019, the estimated fair values of EQM's senior notes were approximately $5,139 million and $3,421 million, respectively, and the carrying values of EQM's senior notes were approximately $5,043 million and $3,462 million, respectively. The fair value of the Preferred Interest is a Level 3 fair value measurement and is estimated using an income approach model that applies a market-based discount rate. As of September 30, 2020 and December 31, 2019, the estimated fair values of the Preferred Interest were approximately $127 million and $126 million, respectively, and the carrying values of the Preferred Interest were approximately $106 million and $110 million, respectively.

11.    Earnings (Loss) Per Share

The following tables set forth the computation of the basic and diluted earnings (loss) per share attributable to Equitrans Midstream common shareholders for the three and nine months ended September 30, 2020 and 2019:

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	Three Months Ended September 30,
	2020				2019
	Basic		Diluted		Basic		Diluted
	(In thousands, except per share data)
Net income (loss)	$	168,439	$	168,439	$	(61,489)	$	(61,489)
Less: Net income (loss) attributable to noncontrolling interests (excluding EQM Series A Preferred Units)	3,973		3,973		(44,144)		(44,144)
Less: EQM Series A Preferred Units interest in net income	—		—		48,480		48,480
Less: Preferred dividends	14,628		14,628		—		—
Net income (loss) attributable to Equitrans Midstream common shareholders	$	149,838	$	149,838	$	(65,825)	$	(65,825)
Basic weighted average common shares outstanding	432,773		432,773		254,915		254,915
Dilutive securities (a)(b)	—		48		—		—
Diluted weighted average common shares outstanding	432,773		432,821		254,915		254,915
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders	$	0.35	$	0.35	$	(0.26)	$	(0.26)

	Nine Months Ended September 30,
	2020				2019
	Basic		Diluted		Basic		Diluted
	(In thousands, except per share data)
Net income	$	501,457	$	501,457	$	268,557	$	268,557
Less: Net income attributable to noncontrolling interests (excluding EQM Series A Preferred Units)	163,406		163,406		155,082		155,082
Less: EQM Series A Preferred Units interest in net income	47,359		47,359		48,480		48,480
Less: Preferred dividends	44,132		44,132		—		—
Net income attributable to Equitrans Midstream common shareholders	$	246,560	$	246,560	$	64,995	$	64,995
Basic weighted average common shares outstanding	314,411		314,411		254,868		254,868
Dilutive securities (a)(b)	—		—		—		19
Diluted weighted average common shares outstanding	314,411		314,411		254,868		254,887
Earnings per share of common stock attributable to Equitrans Midstream common shareholders	$	0.78	$	0.78	$	0.26	$	0.25

(a)For the periods presented, as applicable, EQM's dilutive securities issued and outstanding prior to the EQM Merger did not have a material impact on the Company's diluted earnings per share.

(b)For the three and nine months ended September 30, 2020, the Company excluded 30,099 and 11,995 (in thousands), respectively, of weighted average anti-dilutive securities related to the Equitrans Midstream Preferred Shares and stock-based compensation awards. For the three months ended September 30, 2019, the Company excluded 45 (in thousands) of weighted average anti-dilutive securities related to stock-based compensation awards.

Preferred dividends include a $27.3 million premium recognized on the redemption of the EQM Series A Preferred Units as part of the Restructuring Closing during the nine months ended September 30, 2020.

12.     Income Taxes

The Company's effective tax rate was 14.4% for the three months ended September 30, 2020, compared to (3.3)% for the three months ended September 30, 2019. The Company's effective tax rate was 14.0% for the nine months ended September 30, 2020, compared to 14.6% for the nine months ended September 30, 2019. The effective tax rate was higher for the three months ended September 30, 2020 compared to the three months ended September 30, 2019 primarily due to the tax impact of the impairments of long-lived assets (see Note 4) during the three months ended September 30, 2019 and, for the three months ended September 30, 2020, the decrease in net income attributable to noncontrolling interests as a result of the EQM Merger

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and related effect on the Company's estimated annual effective tax rate, partially offset by an increase in AFUDC - equity. Excluding other items, the effective tax rates for the three and nine months ended September 30, 2020 and 2019 were lower than the statutory rates because the Company does not record income tax expense on the portion of its income attributable to the noncontrolling member of Eureka Midstream and did not record income tax expense on the portion of its income attributable to the noncontrolling limited partners of EQM and EQGP for the periods prior to the closing of the EQM Merger and the EQGP Buyout, respectively.

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EQUITRANS MIDSTREAM CORPORATION

Item 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion and analysis of financial condition and results of operations in conjunction with the consolidated financial statements, and the notes thereto, included elsewhere in this report.

Cautionary Statements

Disclosures in this Quarterly Report on Form 10-Q contain certain forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the Exchange Act), and Section 27A of the Securities Act. Statements that do not relate strictly to historical or current facts are forward-looking and usually identified by the use of words such as "anticipate," "estimate," "could," "would," "will," "may," "forecast," "approximate," "expect," "project," "intend," "plan," "believe," "target" and other words of similar meaning in connection with any discussion of future operating or financial matters. Without limiting the generality of the foregoing, forward-looking statements contained in this Quarterly Report on Form 10-Q include the matters discussed in the section captioned "Outlook" in "Management's Discussion and Analysis of Financial Condition and Results of Operations," and the expectations of plans, strategies, objectives, and growth and anticipated financial and operational performance of Equitrans Midstream and its subsidiaries, including:

•guidance and any changes in such guidance regarding the Company’s gathering, transmission and storage and water services revenue and volume growth, including the anticipated effects associated with the EQT Global GGA and related documents entered into with EQT;

•projected revenue (including from firm reservation fees), deferred revenues, expenses and contract liabilities, and the effects on projected revenue, deferred revenue and contract liabilities associated with the EQT Global GGA and the MVP project (including changes in the targeted full in-service date for such project);

•the ultimate gathering fee relief provided to EQT under the EQT Global GGA and related agreements, including the exercise by EQT of any cash-out option as an alternative to receiving a portion of such relief;

•the Company's ability to de-lever;

•the weighted average contract life of gathering, transmission and storage contracts;

•infrastructure programs (including the timing, cost, capacity and sources of funding with respect to gathering, transmission and storage and water expansion projects);

•the cost, capacity, shippers for, timing of regulatory approvals, final design (including expansions or extensions and capital related thereto), ability to contract additional capacity on and targeted in-service dates of current or in-service projects or assets, in each case as applicable;

•the ultimate terms, partners and structure of the MVP Joint Venture and ownership interests therein;

•the impact of changes in the targeted full in-service date of the MVP project on the fair value of the Henry Hub cash bonus provision;

•expansion projects in the Company's operating areas and in areas that would provide access to new markets;

•the Company's ability to provide produced water handling services and realize expansion opportunities and related capital avoidance;

•the Company's ability to identify and complete acquisitions and other strategic transactions, including joint ventures, effectively integrate transactions into the Company’s operations, and achieve synergies, system optionality and accretion associated with transactions, including through increased scale;

•the Company's ability to access commercial opportunities and new customers for its water services business, and the timing and final terms of any definitive water services agreement or agreements between EQT and the Company (a Water Services Agreement) entered into pursuant to the terms of the Water Services Letter Agreement;

•any credit rating impacts associated with the MVP project, customer credit ratings changes, including EQT's, and defaults, acquisitions, dispositions and financings and any changes in EQM's credit ratings;

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•the impact of a dispute with EQT (or resolution thereof) regarding the Hammerhead gathering agreement and/or ownership of the Hammerhead pipeline on the Company's business and results of operations;

•the impact of such dispute (or resolution thereof) on investors' perceptions of the Company's commercial relationship with EQT;

•the effect and outcome of future litigation and other proceedings, including regulatory proceedings;

•effects of any consolidation of or effected by upstream gas producers, whether in or outside of the Appalachian Basin;

•the ability of the Company's contracts to survive a customer bankruptcy or restructuring;

•the timing and amount of future issuances or repurchases of the Company's securities;

•effects of conversion, if at all, of the Equitrans Midstream Preferred Shares;

•effects of seasonality;

•expected cash flows and MVCs, including those associated with the EQT Global GGA and any definitive agreement or agreements between EQT and the Company related to the Water Services Letter Agreement, and the potential impacts thereon of the commission timing and cost of the MVP project;

•projected capital contributions and capital and operating expenditures, including the amount and timing of reimbursable capital expenditures, capital budget and sources of funds for capital expenditures;

•dividend amounts, timing and rates;

•changes in commodity prices and the effect of commodity prices on the Company's business, including future decisions of customers in respect of curtailing (or subsequently bringing back online) natural gas production, choke management, timing of turning wells in line, rig and completion activity and related impacts on the Company's business;

•liquidity and financing requirements, including sources and availability;

•interest rates;

•the ability of the Company's subsidiaries (some of which are not wholly owned) to service debt under, and comply with the covenants contained in, their respective credit agreements;

•expectations regarding production volumes in the Company's areas of operations;

•the Company's ability to achieve the anticipated benefits associated with the execution of the EQT Global GGA, the Water Services Letter Agreement and related agreements;

•the impact on the Company and its subsidiaries of the coronavirus disease 2019 (COVID-19) pandemic, including, among other things, effects on demand for natural gas and the Company's services, the duration of the reduction or curtailment of production of associated gas from basins such as the Permian Basin, commodity prices and access to capital;

•the effects of government regulation; and

•tax status and position.

The forward-looking statements included in this Quarterly Report on Form 10-Q involve risks and uncertainties that could cause actual results to differ materially from projected results. Accordingly, investors should not place undue reliance on forward-looking statements as a prediction of actual results. The Company has based these forward-looking statements on management's current expectations and assumptions about future events. While the Company considers these expectations and assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory and other risks and uncertainties, many of which are difficult to predict and are beyond the Company's control. The risks and uncertainties that may affect the operations, performance and results of the Company's business and forward-looking statements include, but are not limited to, those set forth under "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2019, as are updated by this Quarterly Report on Form 10-Q.

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Any forward-looking statement speaks only as of the date on which such statement is made and the Company does not intend to correct or update any forward-looking statement, unless required by securities law, whether as a result of new information, future events or otherwise.

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Executive Overview

Net income attributable to Equitrans Midstream common shareholders was $149.8 million for the three months ended September 30, 2020 compared with a net loss attributable to Equitrans Midstream common shareholders of $65.8 million for the three months ended September 30, 2019. The increase resulted primarily from a decrease in impairment charges associated with long-lived assets, unrealized gains on derivative instruments associated with the Henry Hub cash bonus payment provision and higher equity income from the Company's investment in the MVP Joint Venture, partially offset by lower volumetric-based fee revenues primarily due to the impacts of the EQT Global GGA, higher income tax expense, higher net interest expense and preferred dividends associated with the Equitrans Midstream Preferred Shares. See Note 6 to the consolidated financial statements for a discussion of deferred revenues under the EQT Global GGA.

Net income attributable to Equitrans Midstream common shareholders was $246.6 million for the nine months ended September 30, 2020 compared with $65.0 million for the nine months ended September 30, 2019. The increase resulted primarily from a decrease in impairment charges associated with long-lived assets, higher equity income from the Company's investment in the MVP Joint Venture, increased revenue from firm reservation fees on Gathering and Water and unrealized gains on derivative instruments associated with the Henry Hub cash bonus payment provision, partially offset by lower volumetric-based fee revenues primarily due to the impacts of the EQT Global GGA, higher income tax expense, preferred dividends associated with the Equitrans Midstream Preferred Shares, higher net interest expense and a loss on early extinguishment of debt.

COVID-19 Update

The COVID-19 outbreak has resulted in a severe global economic downturn and a recession of unknown duration and has caused increased volatility in and intermittent disruptions to the global financial and credit markets. The outbreak has directly resulted in a significant decrease in demand for oil and natural gas liquids, at least in the short term, which caused extreme volatility in oil and other liquids prices and a significant negative impact to, at a minimum, the short- and medium-term outlook for oil prices. The downward pressure on oil prices was further exacerbated by the failure, in March 2020, of Saudi Arabia and Russia to agree to cut oil production, which contributed to a sharp drop in the price of oil (and at one point negative prices for oil) and an imbalance between the supply and demand for oil. The revised outlook for oil and other liquids prices caused a significant reduction in the number of operating drilling rigs in the United States, with a substantial portion of this reduction in rigs accounted for in shale plays targeted primarily at developing oil resources, including the Permian Basin. According to Baker Hughes, the average U.S. rig count fell to approximately 257 during September 2020, compared to an average rig count of approximately 791 during January 2020. This dramatic decrease in the number of operating drilling rigs has positively impacted the natural gas forward price strip based on the market expectation that the reduced or curtailed production of associated gas from basins such as the Permian Basin will at least in the near- and medium-term cause a reduction in the overall supply of natural gas which will more than offset reduced demand for natural gas as a result of the COVID-19 outbreak. See “Commodity Prices” under “Outlook” below for a further discussion of the current commodity price environment for the Company and its producer customers.

Future disruptions to the global financial and credit markets from the COVID-19 outbreak and related economic impacts could, both directly and indirectly, negatively impact the Company’s financial condition and results of operations. The Company closed EQM’s offering of the 2020 Senior Notes in June 2020, resulting in net proceeds of approximately $1.58 billion, which the Company primarily used to repay a portion of the outstanding borrowings under the Amended EQM Credit Facility; however, there can be no guarantee that future disruptions to the financial and credit markets as a result of the COVID-19 outbreak and related economic impacts would not affect the Company’s ability to again access such markets, if needed, on acceptable terms or at all. Further, certain of the Company’s producer customers have significant capital needs, primarily to refinance existing indebtedness that matures next year and during the next several years, and further disruptions or instability in financial and credit markets as a result of COVID-19 and the economic disruptions therefrom may have a significant, negative impact on such producers’ abilities to access the financial and credit markets and refinance existing indebtedness as it becomes due. If such producer customers have difficulty refinancing such indebtedness on acceptable terms or at all (or undertaking other transactions to generate cash for debt service), the Company’s exposure to risk of nonpayment and/or nonperformance by its customers would increase. Additionally, the ability of the Company’s producer customers to maintain or grow their production would likely be adversely affected as a result of such refinancing challenges, which would have a negative impact on demand for the Company’s current services as well as the prospect of future pipeline expansion projects that would enhance the Company’s business.

From an operational perspective, while the COVID-19 outbreak has significantly impacted the manner in which the Company’s employees and contractors perform their job functions, the outbreak has had, and continues to have, a minimal impact on the Company’s overall operations. However, the situation surrounding COVID-19 remains fluid, and the Company continues to actively manage its response in collaboration with relevant parties, including its employees, contractors, customers and

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suppliers. As a midstream energy company, during applicable state-issued stay-at-home orders, the Company was recognized as an essential business under various regulations related to the COVID-19 outbreak and continued to operate as permitted under these regulations. The Company has proactively undertaken a number of companywide measures intended to promote the safety of field and non-field level employees and contractors (including, among other things, establishing an Infectious Disease Response Team, instituting enhanced self-protection and office sanitation measures, eliminating non-essential business travel, implementing a mandatory work-from-home protocol for a substantial majority of the Company’s employees through at least June 1, 2021, instituting face covering protocols, providing certain medical benefit enhancements, practicing social distancing in the field where possible, sharing the Company’s infectious disease response plan with suppliers and contractors, and timely communicating updates to employees and other relevant parties). In addition, the Company is focused on implementing additional mitigation efforts in connection with the remobilization of certain field level employees and contractors. The Company’s Infectious Disease Response Team continues to monitor and assist in implementing mitigation efforts in respect of potential areas of risk for the Company and its stakeholders. Additionally, the Company has implemented business continuity plans and provided support to local communities through corporate giving and the Equitrans Midstream Foundation. The Company has been able to maintain a consistent level of effectiveness through the measures taken. The Company believes that it is following best practices under COVID-19 guidance and intends to continue to refine its practices as additional guidance is released and assess potential impacts from COVID-19 to its financial position and operating results, as well as any regulatory and legislative activities relating to COVID-19 that could impact its business.

The Company is unable to predict, in light of the ongoing and dynamic nature of the circumstances related to COVID-19 and continued growth in COVID-19 infections in the United States (including in certain of the Company’s areas of operation) and globally, any additional impact the outbreak may have on the Company’s business, results of operations and financial condition. The extent of COVID-19’s impact on the Company will depend on future developments, which are highly uncertain and cannot be predicted with any reasonable degree of certainty, including new information which may emerge concerning the severity of COVID-19, the duration of the outbreak, spikes in infection rates (including in the Company's areas of operation) and related economic effects and after effects (including on the natural gas industry), and actions taken to contain COVID-19 or its impact, among others. For further information regarding the potential impact of COVID-19, see "The outbreak of COVID-19 (or any future pandemic), and related declines in economic output and demand for natural gas, could harm our business, results of operations and financial condition." under Part II, "Item 1A. Risk Factors", in this Quarterly Report on Form 10-Q.

Business Segment Results

Operating segments are revenue-producing components of an enterprise for which separate financial information is produced internally and is subject to evaluation by the chief operating decision maker in deciding how to allocate resources. Headquarters costs consist primarily of separation and other transaction costs and other unallocated corporate expenses. Other income, net interest expense and income tax expense are managed on a consolidated basis. The Company has presented each segment's operating income (loss), equity income and various operational measures in the following sections. Management believes that the presentation of this information is useful to management and investors regarding the financial condition, results of operations and trends of its segments. The Company has reconciled each segment's operating income (loss) to the Company's consolidated operating income (loss) and net income (loss) in Note 5 to the consolidated financial statements.

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Gathering Results of Operations

	Three Months Ended September 30,					Nine Months Ended September 30,
	2020		2019		% Change	2020		2019		% Change
	(Thousands, except per day amounts)
FINANCIAL DATA
Firm reservation fee revenues (a)	$	145,533	$	154,791	(6.0)	$	446,721	$	431,520	3.5
Volumetric-based fee revenues	87,118		144,700		(39.8)	317,508		415,518		(23.6)
Total operating revenues	232,651		299,491		(22.3)	764,229		847,038		(9.8)
Operating expenses:
Operating and maintenance	20,683		27,127		(23.8)	62,306		67,860		(8.2)
Selling, general and administrative	21,930		18,462		18.8	67,686		60,365		12.1
Separation and other transaction costs	—		256		(100.0)	4,104		19,127		(78.5)
Depreciation	44,648		38,943		14.6	126,915		104,502		21.4
Amortization of intangible assets	16,204		14,540		11.4	46,990		38,677		21.5
Impairments of long-lived assets	—		298,652		(100.0)	55,581		378,787		(85.3)
Total operating expenses	103,465		397,980		(74.0)	363,582		669,318		(45.7)
Operating income (loss)	$	129,186	$	(98,489)	231.2	$	400,647	$	177,720	125.4
OPERATIONAL DATA
Gathered volumes (BBtu per day)
Firm capacity reservation (b)	5,111		3,824		33.7	4,493		3,321		35.3
Volumetric-based services	3,080		4,406		(30.1)	3,565		4,317		(17.4)
Total gathered volumes	8,191		8,230		(0.5)	8,058		7,638		5.5
Capital expenditures (c)	$	90,452	$	271,860	(66.7)	$	303,063	$	686,178	(55.8)

(a)For the three and nine months ended September 30, 2020, firm reservation fee revenues included approximately $2.6 million and $13.7 million, respectively, of MVC unbilled revenues.

(b)Includes volumes under agreements structured with MVCs.

(c)Includes approximately $13.5 million and $37.1 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2020, respectively, and approximately $6.7 million and $17.6 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2019, respectively.

Three Months Ended September 30, 2020 Compared to Three Months Ended September 30, 2019

Gathering revenues decreased by $66.8 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019. Firm reservation fee revenues decreased by $9.3 million primarily due to $74.6 million of deferred revenue under the EQT Global GGA, partly offset by $65.1 million of increased MVC revenues under the EQT Global GGA and increased firm capacity by other producers. Volumetric-based fee revenues decreased by $57.6 million primarily due to increased MVC revenues attributable to volumes that previously were subject to volumetric-based fees prior to the EQT Global GGA. See Note 6 to the consolidated financial statements for a discussion of deferred revenues under the EQT Global GGA.

Operating expenses decreased by $294.5 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019 primarily as a result of aggregate impairments of long-lived assets associated with goodwill and intangible assets of $298.7 million during the third quarter of 2019 (as discussed in Note 4 to the consolidated financial statements) and a $6.4 million decrease in operating and maintenance expense primarily associated with a decrease in repairs and maintenance expense. The decrease in such operating expenses was partly offset by selling, general and administrative expense which increased by $3.5 million primarily due to higher personnel costs and a $5.7 million increase in depreciation expense as a result of additional assets placed in-service.

Nine Months Ended September 30, 2020 Compared to Nine Months Ended September 30, 2019

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Gathering revenues decreased by $82.8 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. Firm reservation fee revenues increased by $15.2 million primarily due to $129.2 million of increased MVC revenues under the EQT Global GGA and increased firm capacity primarily generated by the operating entities acquired in the Bolt-on Acquisition, partly offset by $148.8 million of deferred revenue under the EQT Global GGA. Volumetric-based fee revenues decreased by $98.0 million primarily due to increased MVC revenues attributable to volumes that previously were subject to volumetric-based fees prior to the EQT Global GGA.

Operating expenses decreased by $305.7 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 primarily as a result of a $323.2 million decrease in impairment charges (as discussed in Note 4 to the consolidated financial statements), a $15.0 million decrease in separation and other transaction costs related to the Bolt-on Acquisition that was completed in April 2019 and a $5.6 million decrease in operating and maintenance expense primarily associated with a decrease in repairs and maintenance expense. The decrease in such operating expenses was partly offset by a $22.4 million increase in depreciation expense as a result of additional assets placed in-service, as well as depreciation on assets acquired in the Bolt-on Acquisition, and an $8.3 million increase in amortization of intangible assets as a result of intangible assets acquired in the Bolt-on Acquisition and a corresponding adjustment to the useful lives of these intangibles (as discussed in Note 3 to the consolidated financial statements). Selling, general and administrative expense increased by $7.3 million primarily due to higher personnel costs.

See also “Outlook” for discussions of certain customer production curtailments during the second and third quarters of 2020 and Note 6 to the consolidated financial statements for discussions of the EQT Global GGA and the transactions related thereto, including the potential cash fee relief to EQT in connection with the MVP in-service date. The Company expects that the revenues resulting from the MVCs under the EQT Global GGA will increase the proportion of the Company's total operating revenues that are firm reservation fee revenues, and correspondingly decrease the portion of the Company's total operating revenues that are volumetric-based fee revenues, in future periods.

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Transmission Results of Operations

	Three Months Ended September 30,					Nine Months Ended September 30,
	2020		2019		% Change	2020		2019		% Change
	(Thousands, except per day amounts)
FINANCIAL DATA
Firm reservation fee revenues	$	84,612	$	81,990	3.2	$	267,973	$	263,051	1.9
Volumetric-based fee revenues	8,717		5,309		64.2	20,896		26,875		(22.2)
Total operating revenues	93,329		87,299		6.9	288,869		289,926		(0.4)
Operating expenses:
Operating and maintenance	8,653		8,976		(3.6)	27,724		23,142		19.8
Selling, general and administrative	7,557		5,286		43.0	18,644		20,626		(9.6)
Depreciation	13,659		13,347		2.3	40,787		38,474		6.0
Total operating expenses	29,869		27,609		8.2	87,155		82,242		6.0
Operating income	$	63,460	$	59,690	6.3	$	201,714	$	207,684	(2.9)
Equity income	$	60,917	$	44,448	37.1	$	171,233	$	112,293	52.5
OPERATIONAL DATA
Transmission pipeline throughput (BBtu per day)
Firm capacity reservation	2,950		2,786		5.9	2,897		2,796		3.6
Volumetric-based services	29		29		—	17		115		(85.2)
Total transmission pipeline throughput	2,979		2,815		5.8	2,914		2,911		0.1
Average contracted firm transmission reservation commitments (BBtu per day)	3,859		3,650		5.7	4,027		3,914		2.9
Capital expenditures (a)	$	6,721	$	16,296	(58.8)	$	32,983	$	46,287	(28.7)

(a)Transmission capital expenditures do not include capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of approximately $65.6 million and $211.7 million for the three months ended September 30, 2020 and 2019, respectively, and $144.3 million and $512.9 million for the nine months ended September 30, 2020 and 2019, respectively.

Three Months Ended September 30, 2020 Compared to Three Months Ended September 30, 2019

Transmission and storage revenues increased by $6.0 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019. Firm reservation fee revenues increased by $2.6 million primarily due to customers contracting for additional firm transmission capacity and volumetric-based fee revenues increased by $3.4 million primarily due to lease bonus revenue and increased usage fees.

Operating expenses increased by $2.3 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019 primarily as a result of higher selling, general and administrative expense resulting from increased personnel costs.

The increase in equity income of $16.5 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019 was related to the increase in the MVP Joint Venture's AFUDC on the MVP.

Nine Months Ended September 30, 2020 Compared to Nine Months Ended September 30, 2019

Transmission and storage revenues decreased by $1.1 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. Firm reservation fee revenues increased by $4.9 million primarily due to customers contracting for additional firm transmission capacity, and volumetric-based fee revenues decreased by $6.0 million due to lower throughput volumes primarily due to producer curtailments as a result of depressed natural gas prices.

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Operating expenses increased by $4.9 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 primarily as a result of increased operating and maintenance expense and increased depreciation expense as a result of additional assets placed in-service, partly offset by lower selling, general and administrative expense resulting from lower personnel costs.

The increase in equity income of $58.9 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 was related to the increase in the MVP Joint Venture's AFUDC on the MVP.

Water Results of Operations

	Three Months Ended September 30,					Nine Months Ended September 30,
	2020		2019		% Change	2020		2019		% Change
	(Thousands)
FINANCIAL DATA
Firm reservation fee revenues (a)	$	9,005	$	840	972.0	$	32,788	$	4,531	623.6
Volumetric-based fee revenues	15,015		20,804		(27.8)	57,817		62,888		(8.1)
Total operating revenues	24,020		21,644		11.0	90,605		67,419		34.4
Operating expenses:
Operating and maintenance	4,569		6,918		(34.0)	23,960		26,458		(9.4)
Selling, general and administrative	1,228		97		1,166.0	3,752		2,180		72.1
Depreciation	8,105		6,907		17.3	22,720		19,801		14.7
Total operating expenses	13,902		13,922		(0.1)	50,432		48,439		4.1
Operating income	$	10,118	$	7,722	31.0	$	40,173	$	18,980	111.7
OPERATIONAL DATA
Water services volumes (MMgal)
Firm capacity reservation (b)	126		42		200.0	487		160		204.4
Volumetric-based services	307		481		(36.2)	1,124		1,351		(16.8)
Total water volumes	433		523		(17.2)	1,611		1,511		6.6
Capital expenditures	$	2,530	$	13,466	(81.2)	$	8,377	$	31,490	(73.4)

(a)    For the three and nine months ended September 30, 2020, firm reservation fee revenues included approximately $1.9 million and $11.4 million, respectively, of MVC unbilled revenues.

(b)    Includes volumes under agreements structured with MVCs.

Three Months Ended September 30, 2020 Compared to Three Months Ended September 30, 2019

Water operating revenues increased by $2.4 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019. Firm reservation fee revenues increased by $8.2 million primarily as a result of increased revenues generated under agreements with MVCs, including increased unbilled revenue associated with MVCs. Volumetric-based fee revenues decreased $5.8 million primarily due to a 36% decrease in fresh water distribution volumes associated with decreased customer activity, partly offset by increased realized rates on a per gallon basis. A majority of the fresh water delivery fees the Company charges per gallon of water are tiered and thus are lower on a per gallon basis once certain volumetric thresholds are met.

Selling, general and administrative expense was higher in the third quarter of 2020 relative to the third quarter of 2019 as a result of higher personnel costs. Depreciation expense increased as a result of additional assets placed in-service. The increase in such operating expenses was partly offset by lower operating and maintenance expense associated with the timing of costs related to customer activities on drilling pads.

Nine Months Ended September 30, 2020 Compared to Nine Months Ended September 30, 2019

Water operating revenues increased by $23.2 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. Firm reservation fee revenues increased by $28.3 million primarily as a result of increased revenues generated under agreements with MVCs, including increased unbilled revenue associated with MVCs. Volumetric-

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based fee revenues decreased $5.1 million primarily due to a 17% decrease in fresh water distribution volumes associated with decreased customer activity, partly offset by increased realized rates on a per gallon basis.

Water operating expenses increased by $2.0 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 primarily as a result of higher selling, general and administrative expense primarily due to higher personnel costs. Depreciation expense increased as a result of additional assets placed in-service. The increase in operating expenses was partly offset by lower operating and maintenance expense associated with the timing of costs related to customer activities on drilling pads.

The Company’s water services are directly associated with producers’ well completion activities and fresh and produced water needs (which are partially driven by horizontal lateral lengths and the number of completion stages per well), which will vary from quarter to quarter. Therefore, the Water operating results for the interim periods are not necessarily indicative of the results for the year ending December 31, 2020.

Other Income Statement Items

Other Income

Other income increased $21.8 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019 primarily as a result of a $21.0 million unrealized gain on derivative instruments associated with the Henry Hub cash bonus payment provision entered into in the first quarter of 2020. Other income increased $36.4 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 primarily as a result of a $37.7 million unrealized gain on derivative instruments associated with the Henry Hub cash bonus payment provision entered into in the first quarter of 2020 and a $2.9 million increase in the net settlement of incentive compensation, partially offset by a $4.3 million decrease in AFUDC - equity.

Loss on Early Extinguishment of Debt

The Company incurred a loss on the early extinguishment of debt of $24.9 million during the nine months ended September 30, 2020 related to the write off of unamortized discounts and financing costs on the ETRN Term Loan Credit Agreement and the Equitrans Midstream Credit Facility in the first quarter of 2020. See Note 9 to the consolidated financial statements.

Net Interest Expense

Net interest expense increased by $20.8 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019 primarily due to higher interest expense of $26.0 million associated with the 2020 Senior Notes and decreased capitalized interest and AFUDC - debt of $6.7 million, partially offset by lower interest expense on the Amended EQM Credit Facility and ETRN Term Loans.

Net interest expense increased by $31.7 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 primarily due to $29.7 million in higher interest expense associated with the 2020 Senior Notes and higher interest expense on the EQM Term Loans and decreased capitalized interest and AFUDC - debt of $4.2 million, partially offset by lower interest expense on the Amended EQM Credit Facility and the ETRN Term Loans.

See also Note 9 to the consolidated financial statements for a discussion of certain of the Company's outstanding debt.

Income Taxes

See Note 12 to the consolidated financial statements for an explanation of the increase in income taxes for the three and nine months ended September 30, 2020 compared to the three and nine months ended September 30, 2019.

The Company files a consolidated income tax return for federal income taxes and uses the asset and liability method to account for income taxes. EQM is, and for the period prior to the EQGP Buyout, EQGP was, a limited partnership for U.S. federal and state income tax purposes. Eureka Midstream is a limited liability company for such purposes. EQM, EQGP, and Eureka Midstream are not subject to U.S. federal or state income taxes.

All of Eureka Midstream's income is, for the period prior to the closing of the EQM Merger, all of EQM's income was, and for the period prior to the EQGP Buyout, all of EQGP's income was, included in the Company’s pre-tax income; however, the Company does not record income tax expense on the portions of its income attributable to the noncontrolling member of Eureka Midstream and did not record income tax expense on the portion of its income attributable to the noncontrolling limited partners of EQM and EQGP for the periods prior to the closings of the EQM Merger and the EQGP Buyout, respectively. This reduces the Company's effective tax rate in periods when the Company has consolidated pre-tax income. The Company expects its effective tax rate for periods following the EQM Merger to generally be higher than the pre-EQM Merger periods due to the

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decrease in net income attributable to noncontrolling interests as a result of the Company's acquisition of the outstanding EQM Common Units not held by the Company and its subsidiaries and related restructuring of the EQM Series A Preferred Units in connection with the closing of the EQM Merger.

Net Income Attributable to Noncontrolling Interests

Net income attributable to noncontrolling interests decreased for the three months ended September 30, 2020 compared to the three months ended September 30, 2019. For the three months ended September 30, 2020, the Company's noncontrolling interest included the third-party ownership interest in Eureka Midstream. For the three months ended September 30, 2019, the Company's noncontrolling interest included the third-party ownership interests in EQM, the EQM Series A Preferred Unit interests in EQM's net income and the third-party ownership interest in Eureka Midstream.

Net income attributable to noncontrolling interest increased for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 primarily as a result of higher net income attributable to the noncontrolling interest in Eureka Midstream, partly offset by lower net income attributable to the noncontrolling interest in EQM primarily due to the impact of the EQM Merger.

The Company recorded net income attributable to noncontrolling interest for the third-party ownership interests in EQM (including the EQM Series A Preferred Units) through the closing of the EQM Merger. Upon closing of the EQM Merger on June 17, 2020, the Company's remaining noncontrolling interest consists of the third-party ownership interest in Eureka Midstream.

See "Investing Activities" and "Capital Requirements" under "Capital Resources and Liquidity" for discussion of capital expenditures.

Outlook

The Company's strategically-located assets overlay core acreage in the Appalachian Basin. The location of the Company's assets allows its producer customers to access major demand markets in the U.S. The Company is one of the largest natural gas gatherers in the U.S., and its largest customer, EQT, is one of the largest natural gas producers in the U.S. based on average daily sales volumes. The Company maintains a stable cash flow profile, with approximately 65% of its revenue for the nine months ended September 30, 2020 generated by firm reservation fees. Further, the percentage of the Company's revenues that are generated by firm reservation fees is expected to increase in future years as a result of the 15-year term EQT Global GGA, which includes an MVC that became effective on February 26, 2020 of 3.0 Bcf per day and gradually steps up to 4.0 Bcf per day for several years following the in-service date of the MVP project. This contract structure enhances the stability of the Company's cash flows and limits its direct exposure to commodity price risk.

The Company's principal strategy is to achieve the scale and scope of a top-tier midstream company by leveraging its existing assets, executing on its growth projects (including through potential expansion and extension opportunities) and, where appropriate, seeking and executing on strategically-aligned acquisition and joint venture opportunities and other strategic transactions, while strengthening its balance sheet through (i) highly predictable cash flows backed by firm reservation fees, (ii) actions to delever its balance sheet, (iii) disciplined capital spending, (iv) operating cost control and (v) an appropriate dividend policy. As part of its approach to organic growth, the Company is focused on its projects and assets outlined below, many of which are supported by contracts with firm capacity or MVC commitments. Additionally, the Company is targeting growth from volumetric gathering and transmission services opportunities and from its water services business. The Company believes that this approach will enable the Company to achieve its strategic goals.

The Company expects that the MVP project, together with the Hammerhead pipeline and Equitrans, L.P. expansion project, will primarily drive the Company's organic growth and that its future growth also will be supported by the MVP Southgate project and water services expansions.

•Mountain Valley Pipeline. The MVP is being constructed by a joint venture among the Company and affiliates of each of NextEra Energy, Inc., Con Edison, AltaGas Ltd. and RGC Resources, Inc. As of September 30, 2020, the Company owned an approximate 45.9% interest in the MVP project and will operate the MVP. The MVP is an estimated 300 mile, 42-inch diameter natural gas interstate pipeline with a targeted capacity of 2.0 Bcf per day that will span from the Company's existing transmission and storage system in Wetzel County, West Virginia to Pittsylvania County, Virginia, providing access to the growing Southeast demand markets. The MVP Joint Venture has secured a total of 2.0 Bcf per day of firm capacity commitments at 20-year terms. Additional shippers have expressed interest in the MVP project and the MVP Joint Venture is evaluating an expansion opportunity that could add approximately 0.5 Bcf per day of capacity through the installation of incremental compression. The MVP Joint Venture is also evaluating other future pipeline extension projects.

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In October 2017, the FERC issued the Certificate of Public Convenience and Necessity for the MVP. In the first quarter of 2018, the MVP Joint Venture received limited notice to proceed with certain construction activities from the FERC and commenced construction. As discussed under "The regulatory approval process for the construction of new midstream assets is challenging, and recent decisions by regulatory and judicial authorities in pending proceedings could impact our or the MVP Joint Venture's ability to obtain all approvals and authorizations necessary to complete certain projects on the projected time frame or at all or our ability to achieve the expected investment returns on the projects." included in "Item 1A. Risk Factors" in Part II of this Quarterly Report on Form 10-Q, there are pending legal and regulatory challenges to or otherwise affecting certain aspects of the MVP project that must be resolved before the MVP project can be completed, and the MVP Joint Venture is working to resolve these challenges. Based primarily on unanticipated delays during the prime summer and fall 2020 construction seasons resulting from the MVP Joint Venture’s inability to complete MVP project work under Nationwide Permit 12 authority (which was received in September 2020 and subsequently temporarily stayed in October 2020 by the Fourth Circuit Court of Appeals) and the continued need for authorization from the FERC to complete construction work in approximately 25 miles of the project route, the Company is targeting a full in-service date for the MVP project during the second half of 2021 at a total project cost of $5.8 billion to $6.0 billion (excluding AFUDC). Completion of the project in accordance with the targeted full in-service date and cost will require, among other things, timely authorization by the FERC to complete construction work in the portion of the project route currently remaining subject to the FERC’s previous stop work order, timely reinstatement of the MVP Joint Venture’s Nationwide Permit 12 permits or utilization of alternative permitting authority and/or construction methods to cross streams and wetlands in a manner not requiring a Nationwide Permit 12, as well as resolution of challenges to the Biological Opinion and Incidental Take Statement issued by the FWS for the MVP project and receipt of authorizations from the Bureau of Land Management and U.S. Forest Service. See the discussion of the litigation and regulatory-related delays affecting the completion of the MVP set forth in Part II, "Item 1. Legal Proceedings". Due to the uncertainty regarding the timing of permitting and the outcome of any legal challenges, on August 25, 2020, the MVP Joint Venture filed a request with the FERC for and, on October 9, 2020, the FERC granted, an extension of time to complete the MVP project for an additional two years through October 13, 2022.

On November 4, 2019, Con Edison exercised an option to cap its investment in the MVP project at approximately $530 million (excluding AFUDC). The Company and NextEra Energy, Inc. are obligated to, and RGC Resources, Inc., another member of the MVP Joint Venture owning an interest in the MVP project, has opted to, fund the shortfall in Con Edison's capital contributions on a pro rata basis. Such funding by the Company and funding by other members has and will correspondingly increase the Company's and such members' respective interests in the MVP project and decrease Con Edison's interest in the MVP project. As a result, based on the midpoint of the project's $5.8 billion to $6.0 billion (excluding AFUDC) targeted cost, the Company's ownership interest in the MVP project will progressively increase from approximately 45.9% to approximately 47.6%.

Through September 30, 2020, based on the midpoint of the MVP project's targeted cost, the Company had funded approximately $2.1 billion of its estimated total capital contributions of approximately $2.9 billion (inclusive of additional contributions required due to the Con Edison cap described above), including approximately $140 million to $150 million in excess of the Company's ownership interest. For 2020, the Company expects to make total capital contributions of $265 million to $275 million to the MVP Joint Venture for purposes of the MVP project, of which approximately $142 million has been contributed to the MVP Joint Venture.

•Wellhead Gathering Expansion Projects and Hammerhead Pipeline. During the nine months ended September 30, 2020, the Company invested approximately $303 million in gathering projects (inclusive of the noncontrolling interest in Eureka Midstream). For 2020, the Company expects to invest approximately $370 million to $390 million in gathering projects (inclusive of expected capital expenditures related to the noncontrolling interest in Eureka Midstream). The primary projects include infrastructure expansion of core development areas in the Marcellus and Utica Shales in southwestern Pennsylvania, southeastern Ohio and northern West Virginia for EQT, Range Resources Corporation (Range Resources) and other producers, including the Hammerhead pipeline. The Hammerhead pipeline is a 1.6 Bcf per day gathering header pipeline that is primarily designed to connect natural gas produced in Pennsylvania and West Virginia to the MVP, Texas Eastern Transmission and Dominion Transmission, is supported by a 20-year term, 1.2 Bcf per day, firm capacity commitment from EQT and cost approximately $540 million. The Company believes the Hammerhead pipeline was placed in-service effective August 1, 2020. For more information, see "Hammerhead Pipeline" below.

•Transmission Projects. During the nine months ended September 30, 2020, the Company invested approximately $33 million in transmission projects. For 2020, the Company expects to invest approximately $45 million to

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$50 million in transmission projects, primarily attributable to the Allegheny Valley Connector, the Equitrans, L.P. Expansion project (EEP), which is designed to provide north-to-south capacity on the mainline Equitrans, L.P. system, including for deliveries to the MVP, and power plant projects. A portion of the EEP commenced operations with interruptible service in the third quarter of 2019. The EEP provides capacity of approximately 600 MMcf per day and offers access to several markets through interconnects with Texas Eastern Transmission, Dominion Transmission and Columbia Gas Transmission. Once the MVP is placed in service, firm transportation agreements for 550 MMcf per day of capacity will commence under 20-year terms.

•MVP Southgate Project. In April 2018, the MVP Joint Venture announced the MVP Southgate project, a proposed 75-mile interstate pipeline that will extend from the MVP at Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina. The MVP Southgate project is backed by a 300 MMcf per day firm capacity commitment from Dominion Energy North Carolina. As designed, the MVP Southgate project has expansion capabilities that could provide up to 900 MMcf per day of total capacity. The MVP Southgate project is estimated to cost a total of approximately $450 million to $500 million, which is expected to be spent primarily in 2021 and 2022. The Company expects to fund approximately $225 million of the overall project cost. During the nine months ended September 30, 2020, $2.7 million of capital contributions were made by the Company to the MVP Joint Venture for the MVP Southgate project. For 2020, the Company expects to make capital contributions of approximately $5 million to the MVP Joint Venture for the MVP Southgate project. The Company will operate the MVP Southgate pipeline and, as of September 30, 2020, owned a 47.2% interest in the MVP Southgate project. The MVP Joint Venture submitted the MVP Southgate certificate application to the FERC in November 2018. The Final Environmental Impact Statement for the MVP Southgate project was issued on February 14, 2020. In June 2020, the FERC issued the Certificate of Public Convenience and Necessity for the MVP Southgate; however, the FERC, while authorizing the project, directed the Office of Energy Projects to not issue a notice to proceed with construction until necessary federal permits are received for the MVP project and the Director of the Office of Energy Projects lifts the stop work order and authorizes the MVP Joint Venture to continue constructing the MVP project. On August 11, 2020, North Carolina regulators denied the MVP Southgate project's application for a Clean Water Act Section 401 Individual Water Quality Certification and Jordan Lake Riparian Buffer Authorization due to uncertainty surrounding the completion of the MVP project, which denial was appealed by the MVP Joint Venture on September 10, 2020. The MVP Southgate project is targeted to be placed in-service in 2022, which such targeted in-service is based on, among other things, favorable and timely resolution of this and other regulatory decisions and processes.

•Water Operations. During the nine months ended September 30, 2020, the Company invested approximately $8 million in its fresh water delivery infrastructure. For 2020, the Company expects to invest approximately $15 million in the operations of its fresh water delivery infrastructure in Pennsylvania and Ohio.

See further discussion of capital expenditures in the "Capital Requirements" section below.

Hammerhead Pipeline. On September 23, 2020, EQT and certain affiliates of EQT instituted arbitration proceedings against the Company by filing a Demand for Arbitration with the American Arbitration Association. The arbitration arises out of the Hammerhead gathering agreement, pursuant to which the Company agreed to construct the Hammerhead pipeline and gather gas for EQT. EQT sought a declaratory judgment that it may exercise an early termination right and purchase the Hammerhead pipeline and related facilities under the terms of the Hammerhead gathering agreement. With its Demand for Arbitration, EQT also sought emergency relief, asking that an emergency arbitrator: (i) resolve the parties’ dispute on the merits by October 1, 2020; or (ii) alternatively, toll the contractual deadline for EQT’s exercise of its termination right, which was set to expire on October 11, 2020, until after the parties’ dispute was resolved. On October 6, 2020, the emergency arbitrator issued an order denying EQT’s request for resolution on the merits but tolling the early termination deadline until the arbitration has been resolved. The Company’s answer to the Notice of Arbitration was filed on October 8, 2020, and the parties will proceed to arbitration. The Company will vigorously defend against EQT’s claims and litigate the Company’s rights, including the assertion of appropriate counterclaims.

EQT Global GGA. On February 27, 2020, the Company announced the EQT Global GGA with EQT, which is a 15-year contract that includes, among other things, a 3.0 Bcf per day MVC (which gradually steps up to 4.0 Bcf per day for several years following the in-service date of the MVP project) and the dedication of a substantial majority of EQT’s core acreage in Pennsylvania and West Virginia to the Company. Under the EQT Global GGA, EQT will receive certain gathering fee relief over a period of three years following the in-service date of the MVP (as further described in Note 6 to the consolidated financial statements). The EQT Global GGA replaced 14 previous gathering agreements between affiliates of each of EQT and the Company.

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Under the EQT Global GGA, the performance obligation is to provide daily MVC capacity and as such the total consideration is allocated proportionally to the daily MVC over the life of the contract. In periods that the gathering MVC revenue billed will exceed the allocated consideration, the excess will be deferred to the contract liability and recognized in revenue when the performance obligation has been satisfied. Assuming a full in-service date in the second half of 2021 for the MVP, the deferral to the contract liability is expected to increase by approximately $76 million for the remainder of 2020 and by approximately $225 million and $14 million, respectively, during 2021 and 2022. While 3.0 Bcf per day MVC capacity became effective with the entry into the EQT Global GGA, additional daily MVC capacity and the associated gathering MVC fees payable by EQT (or its affiliates) to the Company as set forth in the EQT Global GGA are conditioned upon the in-service date of the MVP. There are ongoing legal and regulatory matters that must be resolved favorably before the MVP project can be completed which could have a material effect on the performance obligation and the allocation of the total consideration over the life of the contract and the gathering MVC fees payable by EQT under the contract.

Based on the current Henry Hub natural gas forward strip prices and the terms of the Henry Hub cash bonus payment provision, any delays in the in-service date for the MVP project, including the most recent targeted full in-service of the second half of 2021, may decrease the estimated fair value of the derivative asset attributable to the Henry Hub cash bonus payment provision, and such decrease may be substantial. Such changes in estimated fair value, if any, would be recognized in other income on the Company’s statements of consolidated comprehensive income.

For a discussion of the Company's commercial relationship with EQT and related considerations, including risk factors, see the Company's Annual Report on Form 10-K for the year ended December 31, 2019, as updated by this Quarterly Report on Form 10-Q. See also Note 6 to the consolidated financial statements for additional information regarding the EQT Global GGA, and the transactions related thereto.

EQM Merger. On June 17, 2020, the Company, EQM, EQM LP, Merger Sub and the EQM General Partner completed the EQM Merger, pursuant to which, the Company acquired all of the issued and outstanding EQM Common Units (other than EQM Common Units held by the Company and its subsidiaries). As a result of the EQM Merger, EQM is an indirect, wholly owned subsidiary of the Company and is no longer a publicly traded entity. See Notes 1 and 2 to the consolidated financial statements for additional information regarding the EQM Merger.

Commodity Prices. The Company’s business is dependent on continued natural gas production and the availability and development of reserves in its areas of operation. Low prices for natural gas and natural gas liquids have adversely affected development of additional reserves and production that is accessible by the Company’s pipeline and storage assets, which also negatively affects the Company’s water services business. See “COVID-19 Update” under “Executive Overview” above for a discussion of the impact the COVID-19 outbreak has had on oil, natural gas liquids and natural gas prices, and the positive impact lower oil prices are expected to have on natural gas prices in the near- and medium-term, primarily as a result of the expected corresponding declines in the production of associated gas in the United States which the market expects will more than offset reduced demand for natural gas as a result of the COVID-19 outbreak.

Henry Hub spot and local spot natural gas prices, which were under pressure prior to the COVID-19 outbreak due primarily to a warmer than normal 2019 and 2020 winter heating season, a temperate spring 2020 season and an oversupply of natural gas (caused in part by the significant increase in production of associated gas from the Permian Basin and similar basins in recent years), have been further pressured by a reduction in global demand for natural gas during the first nine months of 2020 (for which the COVID-19 outbreak has been a contributing factor), lack of available natural gas storage and the continued significant supplies of natural gas being produced, particularly from the Appalachian Basin. The Henry Hub natural gas price ranged from $1.33 per MMbtu to $2.52 per MMbtu between January 1, 2020 and September 30, 2020, with some prices reflecting the lowest natural gas prices in more than 20 years. Further, market prices for natural gas in the Appalachian Basin continue to be lower than Henry Hub natural gas prices and were significantly lower during portions of the first nine months of 2020. While the Company expects natural gas prices to recover beginning in the fourth quarter of 2020, as reflected by the current natural gas forward price strip, primarily due to the decrease in associated gas production from the Permian Basin and increased demand for natural gas during the colder winter months, the length and extent of that price recovery (if any) and its effect on the development plans of the Company’s customers, which impact both the Company’s ability to execute new commercial agreements with its customers as well as the volumetric-based fee revenues the Company earns under existing contracts, will be impacted by global demand for natural gas, the pace of the reduction of natural gas production (primarily from the expected decrease in supplies of associated gas from the Permian Basin resulting from the dramatic decrease in oil prices during the first half of 2020), and the length and severity of the COVID-19 outbreak, during which a record number of shipments of liquified natural gas have been cancelled. There is no assurance that the elevated natural gas prices indicated by the forward natural gas price strip will be realized or that any positive impact from the decline in oil prices will offset reduced demand for natural gas as a result of the COVID-19 outbreak or other factors.

Lower natural gas prices have caused certain producers, including customers of the Company, to determine to reduce their rig count (and thereby delay production), temporarily shut in portions of their production or otherwise take actions to slow

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production growth and/or reduce production, which when effected by the Company's producer customers reduces the demand for, and usage of, the Company’s services. For instance, in May 2020 and September 2020, EQT, the Company's largest customer, publicly disclosed that it had made the strategic decision to temporarily curtail significant portions of its production, and certain other Company customers also curtailed portions of their production during the second and/or third quarters of 2020. Substantially all of the curtailed production has returned to the Company’s gathering and/or transmission systems as of the filing date of this Quarterly Report on Form 10-Q. The recent production curtailments caused a decrease in the Company's volumetric-based fee revenues for the second and third quarters of 2020, and an extended period of low natural gas prices and/or a slow recovery of natural gas prices in the fourth quarter of 2020 and in 2021 could cause EQT or other producers to take similar actions in the future, which could have a significant negative effect on the demand for the Company's services and therefore its results of operation.

The Company’s customers, including EQT, Range Resources and Gulfport Energy Corporation (Gulfport), previously announced reductions in their capital spending forecasts for 2020 and may continue to lower capital spending in the future based on commodity prices, access to capital, investor expectations for positive free cash flow, a desire to reduce or refinance leverage (including the perceived ability to do so), or other factors. On January 13, 2020, EQT publicly announced a 2020 capital expenditure forecast of $1.25 billion to $1.35 billion, compared to 2019 capital expenditures of $1.85 billion to $1.95 billion, which represented an approximate 30% decrease in capital expenditures compared to EQT’s projected 2019 capital expenditures. On March 16, 2020, EQT announced a further reduction in its 2020 capital expenditure forecast to $1.075 billion to $1.175 billion. Finally, on October 22, 2020, EQT announced a reduction in its 2020 capital expenditure forecast to $1.05 billion to $1.10 billion. In addition, longer-term price declines and sustained periods of low natural gas and natural gas liquids prices could continue to have an adverse effect on the creditworthiness of the Company's customers and related ability to pay firm reservation fees under long-term contracts and/or affect activity levels and, accordingly, volumetric-based fees, which could affect the Company’s results of operations, liquidity or financial position. Each of S&P, Moody's and Fitch took negative ratings actions on a number of Appalachian exploration and production companies during 2020, including EQT, Range Resources and Gulfport, citing, among other things, lower natural gas price assumptions and current and future financing needs (although Fitch revised its ratings outlook for EQT to positive from negative in June 2020, citing EQT's efforts to reduce outstanding debt and improvements in natural gas fundamentals, S&P updated its ratings outlook for EQT from negative to stable in August 2020, Moody's updated its ratings outlook for EQT from negative to positive in October 2020, and S&P upgraded EQT's rating from from BB- with a stable outlook to BB with a stable outlook in October 2020). On August 7, 2020, Gulfport announced that its management has substantial doubt about Gulfport's ability to continue as a going concern, citing, among other things, decreased demand for natural gas as a result of the COVID-19 pandemic and accompanying decrease in commodity prices significantly impairing Gulfport’s ability to access capital markets and refinance existing indebtedness. In October 2020, Gulfport elected to defer making interest payments with respect to certain of its outstanding indebtedness and entered into a forbearance agreement with certain of its lenders to temporarily waive any defaults in connection with the interest payment deferrals until the earlier of November 13, 2020 or another event that would trigger the end of the forbearance period. Many of the Company’s customers, including EQT, have entered into long-term firm reservation transmission and gathering contracts or contracts with MVCs on the Company's systems. However, approximately 35% of the Company’s operating revenues for the first nine months of 2020 were volumetric-based fee revenues. For more information, see "Decreases in production of natural gas in EQM's areas of operation have adversely affected, and future decreases could further adversely affect, its business and operating results and reduce its cash available to make distributions to its unitholders, including us." included in Item "1A. Risk Factors - Risks Related to EQM's Business" of the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.

Potential Future Impairments. During the first quarter of 2020, the Company recognized an impairment of long-lived assets of approximately $55.6 million, including $37.9 million related to certain Hornet Midstream-related gathering assets and $17.7 million related to certain Hornet Midstream-related intangible assets associated with the Eureka/Hornet reporting unit. See Note 4 to the consolidated financial statements for additional information. As of the filing of this Quarterly Report on Form 10-Q, the Company cannot predict the likelihood or magnitude of any future impairment.

The accounting estimates related to impairments are susceptible to change, including estimating fair value which requires considerable judgment. For goodwill, management’s estimate of a reporting unit’s future financial results is sensitive to changes in assumptions, such as changes in stock prices, weighted-average cost of capital, terminal growth rates and industry multiples. For the Company’s equity investments in the MVP Joint Venture, management must evaluate the Company’s investments for other-than-temporary declines in fair value under ASC 323. The Company believes the estimates and assumptions used in estimating its reporting units’ and its equity investments’ fair values are reasonable and appropriate; however, assumptions and estimates are inherently subject to significant business, economic, competitive, regulatory and other risks that could materially affect the calculated fair values and the resulting conclusions regarding impairments of goodwill and equity investments, which could materially affect the Company’s results of operations and financial position. Additionally, actual results could differ from these estimates. The Company also continues to evaluate the ongoing legal and regulatory matters related to the MVP project that must be resolved favorably (and timely) before the project can be completed, as further described in Part II, “Item 1. Legal Proceedings” of this Quarterly Report on Form 10-Q. See also Note 4 to the consolidated financial statements and “Reviews of

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our goodwill and intangible and other long-lived assets have resulted in significant impairment charges and reviews of goodwill, intangible and other long-lived assets (including equity method investments) could result in future significant impairment charges.” included in Part II, “Item 1A. Risk Factors," in this Quarterly Report on Form 10-Q.

Capital Resources and Liquidity

The Company's liquidity requirements are to finance its operations, its capital expenditures, potential acquisitions and other strategic transactions and capital contributions to joint ventures, including the MVP Joint Venture, to pay cash dividends and to satisfy any indebtedness obligations. The Company's ability to meet these liquidity requirements depends on the Company's cash flow from operations and the Company's ability to raise capital in banking, capital and other markets (including refinancing existing credit facilities as they mature). Cash flow and capital raising activities (including the ability in refinancings to obtain similar terms to those currently present in existing credit facilities) may be affected by prevailing economic conditions in the natural gas industry and other financial and business factors, including the current COVID-19 outbreak, some of which are beyond the Company's control. The Company's available sources of liquidity include cash from operations, cash on hand, borrowings under its subsidiaries' revolving credit facilities, issuances of additional debt and issuances of additional equity securities by the Company. As of September 30, 2020, pursuant to the terms of the Amended EQM Credit Facility and Amended 2019 EQM Term Loan Agreement, EQM would have been able to borrow approximately $2.0 billion under the Amended EQM Credit Facility. Pursuant to the Tax Matters Agreement, the Company is subject to certain restrictions related to certain corporate actions, including restrictions related to the issuance of Company securities beyond certain thresholds as set forth in the Tax Matters Agreement for a two-year period following the Separation and Distribution. See "We may determine to forgo or be required to forgo certain transactions in order to avoid the risk of incurring material tax-related liabilities or indemnification obligations under the tax matters agreement." included in "Item 1A. Risk Factors – Risks Related to the Separation," in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The Company is not forecasting any public equity issuance for currently anticipated organic growth projects.

In February 2020, S&P and Fitch downgraded EQM's credit ratings from investment grade to non-investment grade. In addition, in April 2020, Moody's further downgraded EQM's credit rating from Ba2 (with a negative outlook) to Ba3 (with a negative outlook), and S&P further downgraded EQM's credit rating from BB (with a stable outlook) to BB- (with a negative outlook, which subsequently was revised by S&P in September 2020 to stable). The non-investment grade ratings from Moody's, S&P and Fitch have caused the Company to incur higher borrowing costs under the Amended EQM Credit Facility and the Amended 2019 EQM Term Loan Agreement. As a result of the February 2020 downgrades, EQM was also obligated to deliver additional credit support to the MVP Joint Venture in the form of letters of credit, which, in the case of the MVP project (based on the midpoint of the targeted cost for the project), would be in the amount of approximately $231.2 million and is, in the case of the MVP Southgate, $14.2 million, in each case as of the filing date of this Quarterly Report on Form 10-Q. Additionally, pursuant to the EQT Global GGA, if EQM does not maintain minimum credit ratings from two of three credit rating agencies of at least Ba3 with respect to Moody's and BB- with respect to S&P and Fitch, EQM will be obligated to provide additional credit support in an amount equal to approximately $196 million to EQT in support of the potential payment obligation related to the EQT Cash Option (the Cash Option Letter of Credit). See "A further downgrade of EQM's credit ratings, including in connection with the MVP project or changes in the credit ratings of EQT, which are determined by independent third parties, could impact EQM's liquidity, access to capital, and costs of doing business." included in "Item 1A. Risk Factors – Risks Related to EQM's Business," in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.

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Operating Activities

Net cash flows provided by operating activities were $824.2 million for the nine months ended September 30, 2020 compared to $690.5 million for the nine months ended September 30, 2019. The increase was primarily driven by the timing of working capital receipts and payments.

Investing Activities

Net cash flows used in investing activities were $518.1 million for the nine months ended September 30, 2020 compared to $2,116.5 million for the nine months ended September 30, 2019. The decrease was attributable to cash used for the Bolt-on Acquisition in 2019, decreased capital contributions to the MVP Joint Venture in 2020 consistent with a lower level of construction activities for the MVP project and decreased capital expenditures during 2020 as further described in "Capital Requirements."

Financing Activities

Net cash flows used in financing activities were $211.9 million for the nine months ended September 30, 2020 compared to net cash flows provided by financing activities of $1,285.7 million for the nine months ended September 30, 2019. For the nine months ended September 30, 2020, the primary source of financing cash flows was net proceeds from the 2020 Senior Notes issuance, while the primary uses of financing cash flows were the redemption of the EQM Series A Preferred Units, payment for the retirement of the ETRN Term Loans, the payments of dividends and distributions to shareholders and unitholders and net payments of borrowings on the Amended EQM Credit Facility. The net proceeds from the 2020 Senior Notes were primarily used to repay borrowings on the Amended EQM Credit Facility. For the nine months ended September 30, 2019, the primary sources of financing cash flows were borrowings on the Amended EQM Credit Facility, proceeds from the issuance of the term loans under the Amended 2019 EQM Term Loan Agreement, which were used to pay down borrowings under the Amended EQM Credit Facility, and the issuance of the EQM Series A Preferred Units, while the primary use of financing cash flows were the net payments on EQM's credit facility borrowings, the payment of dividends and distributions to shareholders and unitholders and the purchase of EQGP Common Units.

Capital Requirements

The gathering, transmission and storage and water services businesses are capital intensive, requiring significant investment to develop new facilities and to maintain and upgrade existing operations. The Company accrues capital expenditures when the capital work has been completed but the associated bills have not been paid. Accrued capital expenditures are excluded from the statements of consolidated cash flows until they are paid. See Note 5 to the consolidated financial statements.

Capital expenditures decreased by approximately $202.5 million for the three months ended September 30, 2020, as compared to the three months ended September 30, 2019, primarily due to decreased spending on the Hammerhead pipeline and various wellhead gathering projects. Capital expenditures decreased by approximately $423.1 million for the nine months ended September 30, 2020, as compared to the nine months ended September 30, 2019, primarily due to decreased spending on the Hammerhead pipeline and various wellhead gathering projects, partly offset by increased spending on the Eureka Midstream gathering system in 2020 compared to 2019.

For 2020, capital contributions to the MVP Joint Venture are expected to be approximately $265 million to $275 million related to the MVP project and approximately $5 million related to the MVP Southgate project, and capital expenditures are expected to be $430 million to $455 million (including approximately $45 million attributable to the noncontrolling interest in Eureka Midstream). The Company's future capital investments may vary significantly from period to period based on the available investment opportunities, the timing of the construction of the MVP, MVP Southgate and other projects, and maintenance needs. The Company expects to fund future capital expenditures and capital contributions primarily through cash on hand, cash generated from operations and borrowings under its credit facilities.

Credit Facility Borrowings

See Note 9 to the consolidated financial statements for discussion of the Amended EQM Credit Facility, the Amended 2019 EQM Term Loan Agreement and the Eureka Credit Facility.

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Security Ratings

The table below sets forth the credit ratings for EQM's debt instruments at September 30, 2020.

	EQM
	Senior Notes
Rating Service	Rating	Outlook
Moody's	Ba3	Negative
S&P	BB-	Stable
Fitch	BB	Negative

On February 4, 2020, S&P downgraded EQM's credit to a BB+ rating, with a negative outlook, from a BBB- rating following S&P's downgrade of EQT. On February 27, 2020, S&P further downgraded EQM's credit to a BB rating, with a stable outlook. On February 18, 2020, Fitch downgraded EQM to a BB rating, with a negative outlook, from a BBB- rating, citing a downgrade of EQT’s credit rating from BBB- to BB, with a negative outlook, on February 14, 2020, as well as uncertainty around the MVP project, as the principal reasons for the ratings action. On February 27, 2020, Moody's downgraded EQM's credit from Ba1, with a negative outlook, to Ba2, with a negative outlook, citing EQT's weakening credit profile, risks to completion of the MVP project and the increase to EQM's financial leverage resulting from actions in connection with the EQM Merger and the Share Purchases. On April 2, 2020, Moody's further downgraded EQM's credit rating from Ba2, with a negative outlook, to Ba3, with a negative outlook, following Moody's downgrade of EQT's credit rating. On April 7, 2020, S&P further downgraded EQM's credit rating from BB, with a stable outlook, to BB-, with a negative outlook, following S&P's further downgrade of EQT's credit rating. In June 2020, each of Moody's, S&P and Fitch affirmed EQM's credit ratings in connection with the issuance of the 2020 Senior Notes. On September 2, 2020, S&P, following its upgrade of EQT's outlook from negative to stable (based on EQT's reduced debt and improved leverage and maturity profile), lifted EQM's outlook from negative to stable, citing primarily the change in EQT's outlook. The ETRN Term Loans were paid off on March 3, 2020 with proceeds from the EQM Credit Facility and the ETRN Term Loan Credit Agreement was terminated; therefore, the Company no longer has any credit ratings assigned to its debt.

EQM's credit ratings are subject to further revision or withdrawal at any time by the assigning rating organization, and each rating should be evaluated independently of any other rating. The Company cannot ensure that a rating will remain in effect for any given period of time or that a rating will not be lowered or withdrawn entirely by a credit rating agency if, in its judgment, circumstances so warrant, including in connection with the MVP project or the creditworthiness of EQM's customers, including EQT. As of September 30, 2020, EQT's public debt had credit ratings of BB- (subsequently updated to BB in October 2020) from S&P (with a stable outlook), Ba3 from Moody's (with a negative outlook, which was subsequently changed to positive in October 2020) and BB from Fitch (with a positive outlook). As of December 31, 2019, EQT's credit ratings with each of S&P, Moody's and Fitch were considered investment grade. If any credit rating agency further downgrades EQM's ratings, the Company's access to the capital markets could become more challenging, borrowing costs will likely increase, EQM may be required to provide additional credit assurances, including the Cash Option Letter of Credit, in support of commercial agreements such as joint venture agreements and, if applicable, construction contracts, and the potential pool of investors and funding sources may decrease. In order to be considered investment grade, a company must be rated Baa3 or higher by Moody's, BBB- or higher by S&P, or BBB- or higher by Fitch. Anything below these ratings, including all of EQM's credit ratings, are considered non-investment grade.

Commitments and Contingencies

In the ordinary course of business, various legal and regulatory claims and proceedings are pending or threatened against the Company and its subsidiaries. While the amounts claimed may be substantial, the Company is unable to predict with certainty the ultimate outcome of such claims and proceedings. The Company accrues legal and other direct costs related to loss contingencies when incurred. The Company establishes reserves whenever it believes it to be appropriate for pending matters. Furthermore, after consultation with counsel and considering available insurance, the Company believes that the ultimate outcome of any matter currently pending against it or any of its subsidiaries will not materially affect its business, financial condition, results of operations, liquidity or ability to pay dividends to its shareholders.

See "The regulatory approval process for the construction of new midstream assets is challenging, and recent decisions by regulatory and judicial authorities in pending proceedings could impact our or the MVP Joint Venture's ability to obtain all approvals and authorizations necessary to complete certain projects on the projected time frame or at all or our ability to achieve the expected investment return on the projects." under "Item 1A. Risk Factors" in this Quarterly Report on Form 10-Q

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and Part II, "Item 1. Legal Proceedings" for discussion of litigation and regulatory proceedings, including related to the MVP project.

See Note 14 to the annual consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2019 for further discussion of the Company's commitments and contingencies.

Dividends

On October 16, 2020, the Company's Board of Directors declared cash dividends for the third quarter of 2020 of $0.15 per common share and $0.4873 per Equitrans Midstream Preferred Share, in each case, payable on November 13, 2020 to shareholders of record at the close of business on November 3, 2020.

Critical Accounting Policies and Estimates

The Company's critical accounting policies are described in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2019 as filed with the SEC on February 27, 2020. Any new accounting policies or updates to existing accounting policies as a result of new accounting pronouncements have been included in the notes to the Company's consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q for the period ended September 30, 2020. The application of the Company's critical accounting policies may require management to make judgments and estimates about the amounts reflected in the consolidated financial statements. Management uses historical experience and all available information to make these estimates and judgments. Different amounts could be reported using different assumptions and estimates.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk. Changes in interest rates affect the amount of interest the Company earns on cash, cash equivalents and short-term investments and the interest rates EQM and Eureka Midstream pay on borrowings under their respective revolving credit facilities and term loans, as applicable. The Amended 2019 EQM Term Loan Agreement, the Amended EQM Credit Facility and the Eureka Credit Facility provide for variable interest rates and thus expose the Company, through EQM and Eureka Midstream, to fluctuations in market interest rates. In addition, EQM's interest rates under the Amended 2019 EQM Term Loan Agreement and the Amended EQM Credit Facility are impacted by changes in EQM's credit ratings (which may be caused by factors outside of EQM's control). Eureka's interest rates under the Eureka Credit Facility are also impacted by changes in Eureka's Consolidated Leverage Ratio (as defined in the Eureka Credit Facility) which may fluctuate based on Eureka Midstream's liquidity needs. Such changes in interest rates may accordingly impact the Company's results of operations and liquidity. Further, changes in interest rates may affect the dividend payable on Equitrans Midstream Preferred Shares after March 31, 2024, which could affect the amount of cash the Company has available to make quarterly cash dividends to its shareholders. Additionally, on March 30, 2020, EQM executed amendments to the EQM Credit Facility and the 2019 EQM Term Loan Agreement, which, among other things, increased the interest rates applicable to the borrowings under such facilities. EQM's senior notes are fixed rate and thus do not expose the Company to fluctuations in market interest rates. Changes in interest rates do affect the fair value of EQM's fixed rate debt. See Notes 9 and 10 to the consolidated financial statements for discussions of borrowings and fair value measurements, respectively. EQM and Eureka may from time to time hedge the interest on portions of borrowings under the revolving credit facilities and Amended 2019 EQM Term Loan Agreement, as applicable, in order to manage risks associated with floating interest rates (however, there may be no assurance that such hedges will fully mitigate interest rate risk).

Credit Risk. The Company is exposed to credit risk, which is the risk that it may incur a loss if a counterparty fails to perform under a contract. The Company actively manages its exposure to credit risk associated with customers through credit analysis, credit approval and monitoring procedures. For certain transactions, the Company requests letters of credit, cash collateral, prepayments or guarantees as forms of credit support. Equitrans, L.P.'s FERC tariffs require tariff customers that do not meet specified credit standards to provide three months of credit support; however, the Company is exposed to credit risk beyond this three-month period when its tariffs do not require its customers to provide additional credit support. For some of the Company's more recent long-term contracts associated with system expansions, it has entered into negotiated credit agreements that provide for other credit support if certain credit standards are not met. The Company has historically experienced only minimal credit losses in connection with its receivables.

The Company is exposed to the credit risk of its customers, including EQT, its largest customer. As of September 30, 2020, EQT had $0.8 billion of letters of credit outstanding under its revolving credit facility (inclusive of an $83.6 million letter of credit issued to the MVP Joint Venture). At September 30, 2020, EQT's public senior debt had non-investment grade credit ratings. See "Security Ratings" under Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" for further discussion of EQT's credit ratings.

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In connection with the execution of the EQT Global GGA and the Credit Letter Agreement, the Company agreed to, amongst other things, relieve certain credit posting requirements for EQT, in an amount of up to approximately $250 million, under its commercial agreements with the Company, subject to EQT maintaining a minimum credit rating from two of three rating agencies of (i) Ba3 with Moody’s, (ii) BB- with S&P and (iii) BB- with Fitch. In addition, EQT has guaranteed the payment obligations of certain of its subsidiaries, up to a maximum amount of $115 million, $131 million and $30 million related to gathering, transmission and water services, respectively, across all applicable contracts, for the benefit of the subsidiaries of the Company providing such services. See Note 13 to the annual consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2019 for further discussion of the Company's exposure to credit risk.

Commodity Prices. The Company's business is dependent on continued natural gas production and the availability and development of reserves in its areas of operation. Low prices for natural gas and natural gas liquids, including those resulting from regional basis differentials, which have been significant during portions of the second and third quarters of 2020, have resulted in certain customers temporarily curtailing natural gas production during portions of 2020 and could adversely affect development of additional reserves and production that is accessible by the Company's pipeline and storage assets, or result in lower drilling activity or additional curtailments, which would decrease demand for the Company's services. Lower regional natural gas prices could also cause producers to determine in the future that drilling activities in areas outside of the Company's current areas of operation are strategically more attractive to them. The Company's customers, including EQT, Range Resources and Gulfport, have announced reductions in their capital spending and may announce lower capital spending in the future based on commodity prices, access to capital, investor expectations regarding free cash flow, a desire to reduce or refinance leverage (including the perceived ability to do so) or other factors. Unless the Company is successful in attracting and retaining new customers, the Company's ability to maintain or increase the capacity subscribed and volumes transported under service arrangements on its transmission and storage system, the volumes gathered on its gathering systems, or the volumes of water provided by its water services business will be dependent on receiving consistent or increasing commitments and production from its existing customers. While EQT has dedicated a substantial portion of its core acreage to the Company and has entered into long-term firm gathering and transmission contracts and contracts with MVCs on certain of the Company's systems, EQT may determine in the future that drilling or continuing to produce gas from existing wells in the Company's areas of operations is not economical. For example, in May 2020 and September 2020, EQT publicly disclosed that it had made the strategic decision to temporarily curtail significant portions of its its production, and certain other Company customers also curtailed portions of their production during the second and/or third quarters of 2020. See "Commodity Prices" under "Outlook" for additional discussion. Other than with respect to its MVCs and other firm commitments under existing contracts, EQT is under no contractual obligation to continue to develop its acreage dedicated to the Company. See also Note 6 to the consolidated financial statements for a discussion of the EQT Global GGA and the Water Services Letter Agreement with EQT.

The Company's cash flow profile is underpinned by both firm reservation fee revenues and volumetric-based fees, with approximately 65% of its revenue for the nine months ended September 30, 2020 generated by firm reservation fee revenues, including revenues from MVCs. Accordingly, the Company believes that the effect of short- and medium-term declines in volumes of gas gathered, transported or stored on its systems may be mitigated because firm reservation fee revenues are paid regardless of volumes supplied to the system by customers. See "EQM's exposure to direct commodity price risk may increase in the future." under "Item 1A. Risk Factors - Risks Related to EQM's Business" in the Company's Annual Report on Form 10-K for the year ended December 31, 2019. Sustained periods of low commodity prices could however have a further adverse effect on customer creditworthiness and related ability to pay firm reservation fees under long-term contracts and/or affect activity levels and accordingly volumetric-based fees, all of which could affect the Company's results of operations, liquidity or financial position. Significant declines in gas production in the Company's areas of operations would adversely affect the Company's results of operations, financial condition and liquidity.

The fair value of the Company’s derivative instruments is largely determined by estimates of the NYMEX Henry Hub natural gas forward price curve. A hypothetical 10% increase in NYMEX Henry Hub natural gas futures prices would increase the valuation of the Company’s derivative instruments by $15.6 million, while a hypothetical 10% decrease in NYMEX Henry Hub natural gas futures prices would decrease the valuation of the Company’s derivative instruments by $18.7 million. This fair value change assumes volatility based on prevailing market parameters at September 30, 2020. See Notes 6 and 10 to the consolidated financial statements for a discussion of the Henry Hub cash bonus payment provision.

Other Market Risks. The Amended EQM Credit Facility is underwritten by a syndicate of 21 financial institutions, each of which is obligated to fund its pro rata portion of any borrowings by EQM. No one lender of the financial institutions in the syndicate holds more than 10% of the facility. EQM's large syndicate groups and relatively low percentage of participation by each lender is expected to limit the Company's exposure to disruption or consolidation in the banking industry.

The Eureka Credit Facility is underwritten by a syndicate of 14 financial institutions, each of which is obligated to fund its pro-rata portion of any borrowings by Eureka. Only one lender of the financial institutions in the syndicate holds more than 10% of the facility (approximately 13% held by ABN AMRO Capital USA LLC). Eureka's large syndicate group and relatively low

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percentage of participation by each lender is expected to limit Eureka's exposure to disruption or consolidation in the banking industry. See Note 9 to the consolidated financial statements and "Capital Resources and Liquidity" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" for additional information on the Eureka Credit Facility.

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Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures. Under the supervision and with the participation of management, including the Company’s Principal Executive Officer and Principal Financial Officer, an evaluation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) was conducted as of the end of the period covered by this report. Based on that evaluation, the Principal Executive Officer and Principal Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control over Financial Reporting. During 2020, the Company completed the implementation of the initial phase of an enterprise resource planning (ERP) system, and revised and updated the related controls. These changes did not materially affect the Company's internal control over financial reporting. As the Company implements the remaining functionality under this ERP system through the first six months of 2021, it will continue to assess the impact on its internal control over financial reporting.

There were no changes in the Company's internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act) that occurred during the third quarter of 2020 that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

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PART II.  OTHER INFORMATION

Item 1. Legal Proceedings

In the ordinary course of business, various legal and regulatory claims and proceedings are pending or threatened against the Company and its subsidiaries. While the amounts claimed may be substantial, the Company is unable to predict with certainty the ultimate outcome of such claims and proceedings. The Company accrues legal and other direct costs related to loss contingencies when incurred. The Company establishes reserves whenever it believes it to be appropriate for pending matters. Furthermore, after consultation with counsel and considering available insurance, the Company believes that the ultimate outcome of any matter currently pending against it or any of its subsidiaries will not materially affect its business, financial condition, results of operations, liquidity or ability to pay dividends to its shareholders.

Hammerhead Pipeline Dispute

See “Hammerhead Pipeline” under “Outlook” in “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” for additional information.

Environmental Proceedings

Eureka System Environmental Remediation. On April 10, 2019, EQM acquired a 60% equity interest in Eureka Midstream. Eureka Midstream received one notice of violation (NOV) in April 2019 and two NOVs in June 2019 from the Ohio Environmental Protection Agency associated with legacy slips. The Company cannot predict with certainty whether any facts or circumstances will result in a state environmental agency issuing additional NOVs. If penalties are imposed, an individual penalty or the aggregate of these penalties could result in monetary sanctions in excess of $100,000. However, the Company does not believe that the penalties, if imposed on Eureka Midstream, will result in obligations to the Company that will have a material impact on the financial condition, results of operations or liquidity of the Company.

Appalachian Pipeline North. On February 20, 2019, the Company notified the Pennsylvania Department of Environmental Protection (PADEP) that the erosion and sediment control general permit (ESG Permit) for Appalachian Pipeline North was not terminated or renewed prior to its expiration. The Company is working with the PADEP to obtain a minor modification for unpermitted features on the project that are functioning appropriately, partially terminate areas of the project that are adequately restored and re-permit areas that need to be addressed to achieve compliance with the ESG Permit requirements. In September 2020, the Company received a draft consent order and agreement from the PADEP and agreed to a civil penalty below $100,000 that the Company expects to pay in the fourth quarter of 2020.

Bowser Road Gas Explosion/Pratt Storage Field. On October 31, 2018, a gas explosion occurred in Morgan Township, Greene County, Pennsylvania (the Incident). Following the explosion, the PADEP, the Pennsylvania Public Utilities Commission and the Federal Pipeline and Hazardous Materials Safety Administration have been investigating the Incident. In January 2020, the PADEP notified the Company that it was required to submit an investigation report pursuant to the state’s gas migration regulations due to the Incident's proximity to the Company's Pratt Storage Field assets. The Company, while disputing the applicability of the regulations, submitted a report to the PADEP in March 2020. In September 2020, the PADEP responded to the Company’s investigation report with a request for additional information. The Company is reviewing the additional information requests but cannot predict whether any action will ultimately be brought by the PADEP or what the outcome of such an action would be. If a penalty is imposed, it could result in monetary sanctions in excess of $100,000. However, the Company does not believe that the penalty, if imposed, will have a material impact on the financial condition, results of operations or liquidity of the Company.

Pennsylvania DEP Consent Agreement I/M/O Swarts Storage Field – Stipulated Penalty Assessment. On September 2, 2020, the PADEP notified the Company that it was assessing a stipulated penalty in the amount of $490,000 due to the alleged failure of the Company to submit information required pursuant to an October 29, 2019 Consent Order and Agreement. The Company disputed the PADEP’s claim and sought initial dispute resolution proceedings based on the Company’s position that it had submitted the information multiple times since October 2019. On September 29, 2020, the PADEP notified the Company that it was no longer pursuing penalties arising from the alleged violation referenced in the September 2, 2020 letter, but it did not officially withdraw the stipulated penalty. Despite the PADEP’s notification that it was no longer pursuing the stipulated penalty, as a result of the PADEP not officially withdrawing the stipulated penalty, the PADEP could pursue the stipulated penalty in the future. If penalties are pursued and ultimately imposed, these penalties could result in monetary sanctions in excess of $100,000. However, the Company does not believe that the penalties, if imposed, would have a material impact on the financial condition, results of operations or liquidity of the Company.

MVP Matters

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The MVP Joint Venture is currently defending certain agency actions and judicial challenges to the MVP that must be resolved favorably before the project can be completed, including the following:

•Sierra Club, et al. v. U.S. Army Corps of Engineers, et al., consolidated under Case No. 18-1173, Fourth Circuit Court of Appeals (Fourth Circuit). In February 2018, the Sierra Club filed a lawsuit in the Fourth Circuit against the U.S. Army Corps of Engineers (the U.S. Army Corps). The lawsuit challenged the verification by the Huntington District of the U.S. Army Corps that Nationwide Permit 12, which generally authorizes discharges of dredge or fill material into waters of the United States and the construction of pipelines across such waters under Section 404 of the Clean Water Act, could be utilized in the Huntington District (which covers all but the northernmost area of West Virginia) for the MVP project. The crux of Sierra Club's position was that the MVP Joint Venture, pursuant to its FERC license, planned to use a certain methodology (dry open cut creek crossing methodology) to construct the pipeline across streams in West Virginia that would take considerably longer than the 72 hours allowed for such activities pursuant to the terms of West Virginia's Clean Water Act Section 401 certification for Nationwide Permit 12. A three-judge panel of the Fourth Circuit agreed with the Sierra Club and on October 2, 2018, issued a preliminary order stopping the construction in West Virginia of that portion of the pipeline that is subject to Nationwide Permit 12. Following the issuance of the court's preliminary order, the U.S. Army Corps' Pittsburgh District (which had also verified use of Nationwide Permit 12 by the MVP Joint Venture) suspended its verification that allowed the MVP Joint Venture to use Nationwide Permit 12 for stream and wetlands crossings in northern West Virginia. On November 27, 2018, the Fourth Circuit panel issued its final decision vacating the Huntington District's verification of the use of Nationwide Permit 12 in West Virginia. In August 2018, the West Virginia Department of Environmental Protection (WVDEP) initiated an administrative process to revise its 401 Water Quality Certification for the U.S. Army Corps Nationwide Permits and requested public comment to, among other things, specifically revise the 72-hour limit for stream crossings noted as problematic by the Fourth Circuit as well as other conditions (the WVDEP 401 Rulemaking Proceedings). In June 2018, the Sierra Club filed a second petition in the Fourth Circuit against the U.S. Army Corps, seeking review and a stay of the U.S. Army Corps Norfolk District's decision to verify the MVP Joint Venture's use of Nationwide Permit 12 for stream crossings in Virginia. The Fourth Circuit denied the Sierra Club's request for a stay on August 28, 2018. On October 5, 2018, the U.S. Army Corps' Norfolk District suspended its verification under Nationwide Permit 12 for stream crossings in Virginia pending the resolution of the WVDEP 401 Rulemaking Proceedings. On December 10, 2018, the U.S. Army Corps filed a motion to place the case in abeyance which the court granted on January 9, 2019. On April 24, 2019, the WVDEP submitted a modification to its 401 Water Quality Certification developed in the WVDEP 401 Rulemaking Proceedings to the United States Environmental Protection Agency (the EPA) for approval (since the WVDEP was also required to obtain the EPA's agreement to the modified 401 certification) and provided notice to the U.S. Army Corps. The EPA's agreement to the WVDEP's modification of its 401 Water Quality Certification was received in August 2019 and the U.S. Army Corps approved the WVDEP's modification on January 24, 2020. Following U.S. Army Corps approval, the MVP Joint Venture submitted a new permit application to the U.S Army Corps on January 28, 2020. On September 25, 2020, the Huntington and Pittsburgh districts approved MVP Joint Venture’s Nationwide Permit 12 and the Norfolk district lifted its suspension of the MVP Joint Venture's Nationwide Permit 12. On September 28, 2020, Appalachian Mountain Advocates, on behalf of Sierra Club and certain other petitioners, filed a petition for review of the Huntington and Norfolk permits. On October 5, 2020, Appalachian Mountain Advocates requested from the Fourth Circuit an administrative stay of the U.S. Army Corps' verifications to the MVP Joint Venture's Nationwide Permit 12. On October 16, 2020, the Fourth Circuit granted a temporary administrative stay to permit further time for the Court to consider the motion to stay, which temporary administrative stay is to remain in effect until the Court has ruled on the motion to stay. On October 30, 2020, the Fourth Circuit scheduled oral arguments on the motion to stay for November 9, 2020. If the administrative stay is ultimately granted, or if the Court determines that the U.S. Army Corps’ reverification was not proper, then the Company expects that either there will be further delays in obtaining approval of the MVP Joint Venture’s Nationwide Permit 12 or that the MVP Joint Venture will need to utilize alternative permitting authority and/or construction methods to cross streams and wetlands in a manner not requiring authorization under Nationwide Permit 12.

•Sierra Club, et al. v. U.S. Forest Service, et al., consolidated under Case No. 17-2399, Fourth Circuit Court of Appeals. In a different Fourth Circuit appeal filed in December 2017, the Sierra Club challenged a Bureau of Land Management (BLM) decision to grant a right-of-way to the MVP Joint Venture and a U.S. Forest Service (USFS) decision to amend its management plan to accommodate the MVP, both of which affect the MVP's approximate 3.5-mile segment in the Jefferson National Forest in Virginia. On July 27, 2018, agreeing in part with the Sierra Club, the Fourth Circuit vacated the BLM and USFS decisions, finding fault with the USFS' analysis of erosion and sedimentation effects and the BLM's analysis of the practicality of alternate routes. On August 3, 2018, citing the court's vacatur and remand, the FERC issued a stop work order for the entire pipeline pending the agency actions on remand. The FERC modified its stop work order on August 29, 2018 to allow work to continue on all but approximately 25 miles of the project (the Exclusion Zone). On October 10, 2018, the Fourth Circuit granted a petition for rehearing filed by the MVP Joint Venture for the limited purpose of clarifying that the July 27, 2018 order did not

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vacate the portion of the BLM's Record of Decision authorizing a right-of-way and temporary use permit for MVP to cross the Weston and Gauley Bridge Turnpike Trail in Braxton County, West Virginia. On October 15, 2018, the MVP Joint Venture filed with the FERC a request to further modify the August 3, 2018 stop work order to allow the MVP Joint Venture to complete the bore and install the pipeline under the Weston and Gauley Bridge Turnpike Trail. On October 24, 2018, the FERC granted the MVP Joint Venture's request to further modify the stop work order and authorize construction. Additionally, on October 9, 2020, the FERC authorized construction to resume project-wide, other than the Exclusion Zone, which requires authorization. The Company cannot guarantee whether or when the FERC will act in respect of any or all of the Exclusion Zone or whether the FERC's October 9, 2020 actions or any future action would be subject to challenge. The USFS published a draft Supplemental Environmental Impact Statement (SEIS) to the 2017 FERC Final Environmental Impact Statement for MVP in the Federal Register on September 25, 2020. The USFS is seeking public comments on the SEIS until November 9, 2020. The Company anticipates receiving the final permit authorization during the fourth quarter of 2020. The Company cannot guarantee the timeliness of the agency's actions or when a revised authorization will be finalized, or whether it would be further challenged.

•Challenges to FERC Certificate, Court of Appeals for the District of Columbia Circuit (DC Circuit). Multiple parties have sought judicial review of the FERC's order issuing a certificate of public convenience and necessity to the MVP Joint Venture and/or the exercise by the MVP Joint Venture of eminent domain authority. On February 19, 2019, the DC Circuit issued an order rejecting multiple consolidated petitions seeking direct review of the FERC order under the Natural Gas Act and certain challenges to the exercise by the MVP Joint Venture of eminent domain authority in Appalachian Voices, et al. v. FERC, et al., consolidated under Case No. 17-1271. No petitions for rehearing or petitions for rehearing en banc were filed by the April 5, 2019 deadline. The mandate was issued on April 17, 2019. Another group of parties filed a complaint in the U.S. District Court for the District of Columbia asserting that the FERC's order issuing certificates is unlawful on constitutional and other grounds in Bold Alliance, et al. v. FERC, et al., Case No. 17-1822. The district court plaintiffs sought declaratory relief as well as an injunction preventing the MVP Joint Venture from developing its project or exercising eminent domain authority. In December 2017 and January 2018, the FERC and the MVP Joint Venture, respectively, moved to dismiss the petitions for lack of subject matter jurisdiction. The court granted the motion and dismissed plaintiffs' complaint on September 28, 2018. On October 26, 2018, plaintiffs appealed the decision in Case No. 17-1822 to the DC Circuit in Bold Alliance, et al. v. FERC, et al., Case No. 18-5322. On December 3, 2018, the FERC, as appellee, filed a joint motion with the appellants to hold Case No. 18-5322 in abeyance pending completion of the appeals of the final agency orders related to the MVP certificate in consolidated Case No. 17-1271 and Atlantic Coast Pipeline’s (ACP) certificate. The MVP Joint Venture filed a motion to dismiss the case as to some of the plaintiffs. On February 15, 2019, the DC Circuit entered an order holding this appeal in abeyance pending rulings on the appeals from the ACP and MVP FERC proceedings. Although the members of the ACP project announced the cancellation of that project on July 5, 2020, ACP's proceeding remains pending. Case No. 18-5322 remains in abeyance. If this challenge were successful, it could result in the MVP Joint Venture's certificate of public convenience and necessity being vacated and/or additional proceedings before the FERC, the outcome of which the Company cannot predict.

•Greenbrier River Watershed Ass’n v. WVDEP, Circuit Court of Summers County, West Virginia, Case No. 18-AA-1. In August 2017, the Greenbrier River Watershed Association appealed MVP's Natural Stream Preservation Act Permit (NSPA Permit) obtained from the West Virginia Environmental Quality Board (WVEQB) for the Greenbrier River crossing. The NSPA Permit allowed the MVP Joint Venture to install the pipeline using an open-cut surface crossing technique in the Greenbrier River. Petitioners alleged that the issuance of the NSPA Permit failed to comply with West Virginia's Water Quality Standards for turbidity and sedimentation. The WVEQB dismissed the appeal in June 2018. In July 2018, the Greenbrier River Watershed Association appealed to the Circuit Court of Summers County, asking the Court to remand the NSPA Permit with instructions to impose state-designated construction windows and pre- and post-construction monitoring requirements as well as a reversal of the WVEQB's decision that the NSPA Permit was lawful. On September 18, 2018, the Court granted a stay. A hearing on the merits was held on October 23, 2018. The MVP Joint Venture has since changed its method of pipeline installation to a technique that will not disturb the river bottom or affect the free-flowing characteristics of the river. Accordingly, due to the change in crossing method, the MVP Joint Venture believes it is no longer required to obtain the NSPA Permit. On July 22, 2020, the MVP Joint Venture sent correspondence to the WVDEP voluntarily relinquishing the NSPA Permit. As a result, the MVP Joint Venture filed a motion to dismiss on July 24, 2020. On September 11, 2020, the Circuit Court granted the MVP Joint Venture’s motion to dismiss and the order was filed on September 14, 2020.

•Sierra Club et al. v. U.S. Dep’t of Interior et al., Case No. 18-1082, Fourth Circuit Court of Appeals. On August 6, 2018, the Fourth Circuit held that the National Park Service (NPS) acted arbitrarily and capriciously in granting the ACP a right-of-way permit across the Blue Ridge Parkway. Specifically, the Fourth Circuit found that the permit cited the wrong source of legal authority and the NPS failed to make a “threshold determination that granting the right-of-

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way is ‘not inconsistent with the use of such lands for parkway purposes’ and the overall National Park System to which it belongs.” Even though the MVP Joint Venture was not named in the ACP litigation, the MVP route crosses the Blue Ridge Parkway and implicates some of the same deficiencies addressed by the court. The MVP Joint Venture elected to request that the NPS temporarily suspend its Blue Ridge Parkway permit to reevaluate certain legal components of the MVP permit. As the portion of the MVP that crosses the Blue Ridge Parkway is completely constructed, the NPS granted the MVP Joint Venture the ability to continue final restoration efforts during the course of the suspended permit. The NPS issued a new right of way permit for the MVP project on September 25, 2020. There is no further litigation regarding the ACP's Blue Ridge Parkway permit and no current challenge to the MVP Joint Venture's Blue Ridge Parkway permit.

•Wild Virginia et al. v. United States Department of the Interior; Case No. 19-1866, Fourth Circuit Court of Appeals. Petitioners filed a petition in the Fourth Circuit to challenge MVP’s Biological Opinion and Incidental Take Statement issued by FWS which was approved in November 2017 (BiOp). Petitioners also requested a stay of the application of MVP’s BiOp during the pendency of the court case. On August 15, 2019, the MVP Joint Venture submitted a project-wide voluntary suspension of construction activities that pose a risk of incidental take, based on the BiOp. On October 11, 2019, the Fourth Circuit issued an order approving the stay of the BiOp and holding the litigation in abeyance until January 11, 2020 pending re-consultation between FWS and the FERC regarding FWS’s review of the BiOp. In response to the Fourth Circuit's order, the FERC issued an order on October 15, 2019 requiring the MVP Joint Venture to cease all forward-construction progress. Subsequently, the FERC authorized certain limited construction activities to resume. On September 4, 2020, FWS issued the MVP Joint Venture a new BiOp for the MVP project. On October 1, 2020, the Fourth Circuit dismissed the litigation regarding the original BiOp. On October 27, 2020, the Sierra Club filed a petition with the Fourth Circuit challenging the new BiOp and filed a request for an administrative stay of the BiOp with FWS, which FWS subsequently denied. On November 2, 2020, the Sierra Club filed a motion to stay the new BiOp with the Fourth Circuit.

Other Proceedings Relevant to the MVP Project

Grand Jury Subpoena. On January 7, 2019, the MVP Joint Venture received a letter from the U.S. Attorney's Office for the Western District of Virginia stating that it and the EPA are investigating potential criminal and/or civil violations of the Clean Water Act and other federal statutes as they relate to the construction of the MVP. The January 7, 2019 letter requested that the MVP Joint Venture and its members, contractors, suppliers and other entities involved in the construction of the MVP preserve documents related to the MVP generated from September 1, 2018 to the present. In a telephone call on February 4, 2019, the U.S. Attorney's Office confirmed that it had opened a criminal investigation. On February 11, 2019, the MVP Joint Venture received a grand jury subpoena from the U.S. Attorney's Office for the Western District of Virginia requesting certain documents related to the MVP from August 1, 2018 to the present. The MVP Joint Venture is complying with the letter and subpoena but cannot predict whether any action will ultimately be brought by the U.S. Attorney's Office or what the outcome of such an action would be. The MVP Joint Venture began a rolling production of documents responsive to the subpoena after the U.S. Attorney’s office narrowed its subpoena inquiry to five farms in Virginia containing twenty streams or wetlands.

For additional information on legal proceedings, see also "Item 3. Legal Proceedings" in the Company's Annual Report on Form 10-K for the year ended December 31, 2019.

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Item 1A. Risk Factors

There have been no material changes from the risk factors previously disclosed in the Company's Annual Report on Form 10-K for the year ended December 31, 2019, other than the risks described below.

The outbreak of COVID-19 (or any future pandemic), and related declines in economic output and demand for natural gas, could harm our business, results of operations and financial condition.

In December 2019, COVID-19 was reported in China, and, in January 2020, the World Health Organization declared it a Public Health Emergency of International Concern. COVID-19 subsequently spread to additional countries including the United States, causing and continuing to cause significant business, employment and economic disruptions. Measures adopted by governments to help reduce the spread of the virus have adversely affected the economic and financial markets in the United States and many other countries, resulting in a recession of unknown duration and severity.

The COVID-19 outbreak and resulting economic downturn has resulted in a decrease in global demand for natural gas, causing, among other things, a record number of shipments of liquified natural gas to be cancelled, which has contributed to an oversupply of natural gas and, as a result of such oversupply, significantly depressed natural gas prices during the second and third quarters of 2020, including in the Appalachian Basin. While as of June 30, 2020 the Henry Hub natural gas forward price strip indicated a significant recovery for natural gas prices beginning in the fourth quarter of 2020, low natural gas prices resulted in production curtailments by certain of our customers, including EQT, in the second and third quarters of 2020, and a slower recovery in natural gas prices has and may continue to adversely impact the demand for our services.

Given the ongoing and dynamic nature of the circumstances, it is difficult to predict the further impact of the COVID-19 outbreak (or any other outbreak) on the domestic economy, the natural gas industry, or us; however, our business, results of operations and financial condition could be negatively affected in numerous ways, including, without limitation, that:

•our customers and suppliers may be adversely affected due to the economic downturn and recession resulting from the outbreak and may be adversely affected if the outbreak causes further or long-duration declines in the price of, demand for and production of natural gas or prevents such customers (particularly our largest customer) from conducting, or curtails their ability to conduct, field operations and continue natural gas production, which could reduce demand for our services, negatively affect throughput on our systems or heighten our exposure to risk of loss resulting from the nonpayment and/or nonperformance of our customers;

•our operations may be disrupted or become less efficient if a significant portion of our employees or contractors are unavailable due to illness or if our field operations, including in respect of projects in development, were to be suspended or temporarily shut down or restricted due to outbreak control measures;

•legal and regulatory processes relating to our projects in development, including the MVP and MVP Southgate projects, may be disrupted or slowed, such as if relevant governmental authorities suffer reduced workforce availability due to the virus; and

•resultant disruption to, and instability in, financial and credit markets may adversely affect our access to capital, leverage and liquidity levels and credit ratings, as well as our counterparties’ access to capital, business continuity, financial stability, leverage and liquidity levels and credit ratings (which could heighten counterparty credit risk to which we are exposed in the ordinary course of our business).

Although we believe that we are following best practices under COVID-19 guidance and intend to continue to refine our practices as additional guidance is released, there is no guarantee that efforts by us or any other entity or authority to mitigate potential adverse impacts of the COVID-19 outbreak, whether on a local, state or national level, will be effective.

We also may incur additional costs to further attempt to mitigate potential impacts caused by COVID-19 related disruptions, which could adversely affect our financial condition and results of operations. Further, the COVID-19 outbreak (including federal, state and local governmental responses, broad economic impacts and market disruptions) have heightened and may further heighten many of the other risks set forth in “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2019. The extent of the impact of COVID-19 on us will depend on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of COVID-19, duration of the outbreak and related economic effects and aftereffects (including on the natural gas industry), and actions taken to contain COVID-19 or its impact, among others.

We may further reduce the amount of the cash dividend that we pay on our common stock or may not pay any cash dividends at all to our shareholders. Our ability to declare and pay cash dividends to our shareholders, if any, in the future will depend on various factors, many of which are beyond our control.

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We are not required to declare and pay dividends to our common shareholders. In addition, as described below, we are prohibited from paying any dividends to our shareholders until we pay dividends on the Equitrans Midstream Preferred Shares. On April 27, 2020, our Board of Directors declared a first quarter 2020 dividend that was 67% lower than our fourth quarter 2019 quarterly dividend and maintained this dividend level for the second and third quarters of 2020. Our Board of Directors may further reduce the amount of the cash dividend that we pay on our common stock or may decide not to declare any dividends in the future. Any payment of future dividends will be at the sole discretion of our Board of Directors and will depend upon many factors, including the financial condition, earnings, liquidity and capital requirements of our operating subsidiaries, covenants associated with certain debt obligations, legal requirements, our leverage, regulatory constraints and other factors deemed relevant by our Board of Directors.

Our shareholders may experience dilution as a result of future issuances of common stock or other equity securities.

In the future we may issue common stock or other equity to raise cash for our projects, operations, acquisitions or other purposes and may also acquire interests in other companies by using a combination of cash and our equity or just our equity.

Any of these events may dilute your ownership interests in us, reduce our earnings per share and have an adverse effect on the price of our common stock. The issuance of these new shares and the sale of additional shares from time to time could have the effect of depressing the market value for our common stock. The increase in the number of shares of our common stock outstanding or the issuance of other equity of us, and any resulting dilution, may cause holders to sell shares of our common stock or may create the perception that such sales may occur, either of which may adversely affect the market for, and the market value of, our common stock.

As part of the EQM Merger and the related Restructuring, we issued Equitrans Midstream Preferred Shares in exchange for a portion of the then-outstanding EQM Series A Preferred Units, which Equitrans Midstream Preferred Shares by virtue of their terms and preferences present a number of risks to current and future holders of our common stock.

At the effective time of the EQM Merger, we created and issued new Equitrans Midstream Preferred Shares in exchange for a portion of the then-outstanding EQM Series A Preferred Units.

The Equitrans Midstream Preferred Shares have the following rights and preferences:

•The Equitrans Midstream Preferred Shares are a new class of security that ranks pari passu with any other outstanding class or series of our preferred stock and senior to all shares of our common stock with respect to dividend rights and rights upon liquidation.

•The Equitrans Midstream Preferred Shares vote on an as-converted basis with our common stock and have certain other class voting rights with respect to any amendment to our Certificate of Designations relating to the Equitrans Midstream Preferred Shares or our Amended and Restated Articles of Incorporation that would be adverse (other than in a de minimis manner) to any of the rights, preferences or privileges of the Equitrans Midstream Preferred Shares.

•The holders of the Equitrans Midstream Preferred Shares receive cumulative quarterly dividends at a rate per annum of 9.75% for each quarter ending on or before March 31, 2024, and thereafter quarterly dividends at a rate per annum equal to the sum of (i) three-month LIBOR as of the LIBOR Determination Date (as defined in the Certificate of Designations) in respect of the applicable quarter and (ii) 8.15%; provided that such rate per annum in respect of periods after March 31, 2024 will not be less than 10.50%.

•We are not entitled to pay any dividends on any junior securities, including any shares of our common stock, prior to paying the quarterly dividends payable to the holders of Equitrans Midstream Preferred Shares, including any previously accrued and unpaid dividends.

•Each holder of the Equitrans Midstream Preferred Shares may elect to convert all or any portion of the Equitrans Midstream Preferred Shares owned by it into our common stock initially on a one-for-one basis, subject to certain anti-dilution adjustments and an adjustment for any dividends that have accrued but not been paid when due and partial period dividends (referred to as the “conversion rate”), at any time (but not more often than once per fiscal quarter) after April 10, 2021 (or immediately prior to a liquidation, dissolution or winding up of us), provided that any conversion involves an aggregate number of Equitrans Midstream Preferred Shares of at least $20.0 million (calculated based on the closing price of our common stock on the trading day preceding notice of the conversion) or such lesser amount if such conversion relates to all of a holder’s remaining Equitrans Midstream Preferred Shares or if such conversion is approved by our Board of Directors.

•So long as the holders of Equitrans Midstream Preferred Shares have not elected to convert all of their Equitrans Midstream Preferred Shares into our common stock, we may elect to convert all of the Equitrans Midstream Preferred

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Shares into our common stock, at the then-applicable conversion rate, at any time after April 10, 2021 if (i) our common stock is listed for, or admitted to, trading on a national securities exchange, (ii) the closing price per share of our common stock on the national securities exchange on which the shares of our common stock are listed for, or admitted to, trading exceeds $27.99 for the 20 consecutive trading days immediately preceding notice of the conversion, (iii) the average daily trading volume of our common stock on the national securities exchange on which our common stock is listed for, or admitted to, trading exceeds 1,000,000 shares of our common stock (subject to certain adjustments) for the 20 consecutive trading days immediately preceding notice of the conversion, (iv) we have an effective registration statement on file with the SEC covering resales of our common stock to be received by such holders upon any such conversion and (v) we have paid all prior accumulated and unpaid dividends in cash in full to the holders of Equitrans Midstream Preferred Shares.

•Upon certain events involving a Change of Control (as defined in the Certificate of Designations) in which more than 90% of the consideration payable to us, or to the holders of our common stock, is payable in cash, the Equitrans Midstream Preferred Shares will automatically convert into our common stock at a conversion ratio equal to the greater of (i) the quotient of (a) the sum of (x) the Equitrans Midstream Preferred Share Issue Price plus (y) any accrued and unpaid dividends as of such date, including any partial period dividends, with respect to the Equitrans Midstream Preferred Shares, divided by (b) the Equitrans Midstream Preferred Share Issue Price and (ii) the quotient of (a) the sum of (x) (1) the Equitrans Midstream Preferred Share Issue Price multiplied by (2) 110% plus (y) any accrued and unpaid dividends on such date, including any partial period dividends, with respect to the Equitrans Midstream Preferred Shares, divided by (b) the volume weighted average price of the shares of our common stock for the 30-day period ending immediately prior to the execution of definitive documentation relating to the Change of Control.

•In connection with other Change of Control events that do not satisfy the 90% cash consideration threshold described above, in addition to certain other conditions, each holder of Equitrans Midstream Preferred Shares may elect to (i) convert all, but not less than all, of its Equitrans Midstream Preferred Shares into our common stock at the then-applicable conversion rate, (ii) if we are not the surviving entity (or if we are the surviving entity, but our common stock will cease to be listed), require us to use commercially reasonable efforts to cause the surviving entity in any such transaction to deliver, in exchange for such holder’s Equitrans Midstream Preferred Shares, a substantially equivalent security that has rights, preferences and privileges substantially equivalent to the Equitrans Midstream Preferred Shares (or if we are unable to cause such substantially equivalent securities to be issued, to exercise the option described in clause (i) or (iv) hereof or elect to convert such Equitrans Midstream Preferred Shares at a conversion ratio reflecting a multiple of invested capital), (iii) if we are the surviving entity, continue to hold the Equitrans Midstream Preferred Shares or (iv) require us to redeem the Equitrans Midstream Preferred Shares at a price per share equal to 101% of the Equitrans Midstream Preferred Share Issue Price, plus accrued and unpaid dividends, including any partial period dividends, on the applicable Equitrans Midstream Preferred Shares as of such date, which redemption price may be payable in cash, our common stock or a combination thereof at the election of our Board of Directors (and, if payable in our common stock, such common stock will be issued at 95% of the volume weighted average price of our common stock for the 20-day period ending on the fifth trading day immediately preceding the consummation of the Change of Control). Any holder of Equitrans Midstream Preferred Shares that requires us to redeem its Equitrans Midstream Preferred Shares pursuant to clause (iv) above will have the right to withdraw such election with respect to all, but not less than all, of its Equitrans Midstream Preferred Shares at any time prior to the fifth trading day immediately preceding the consummation of the Change of Control and instead elect to be treated in accordance with any of clauses (i), (ii) or (iii) above.

•At any time on or after January 1, 2024, we will have the right, subject to applicable law, to redeem the Equitrans Midstream Preferred Shares, in whole or in part, by paying cash for each Equitrans Midstream Preferred Share to be redeemed in an amount equal to the greater of (a) the sum of (i)(1) the Equitrans Midstream Preferred Share Issue Price multiplied by (2) 110%, plus (ii) any accrued and unpaid dividends, including any partial period dividends, with respect to the Equitrans Midstream Preferred Shares as of such date and (b) the amount the holder of such Equitrans Midstream Preferred Share would receive if such holder had converted such Equitrans Midstream Preferred Share into shares of our common stock at the then-applicable conversion ratio and we liquidated immediately thereafter.

•Pursuant to the terms of the Restructuring Agreement, in connection with the closing of the Restructuring, we entered into the Registration Rights Agreement pursuant to which, among other things, we gave the Investors certain rights to require us to file and maintain one or more registration statements with respect to the resale of the Equitrans Midstream Preferred Shares and the shares of our common stock that are issuable upon conversion of the Equitrans Midstream Preferred Shares, and which, upon request by certain Investors party to the Registration Rights Agreement, will require us to initiate underwritten offerings for the Equitrans Midstream Preferred Shares and the shares of our common stock that are issuable upon conversion of the Equitrans Midstream Preferred Shares and use our best efforts

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to cause the Equitrans Midstream Preferred Shares to be listed on the securities exchange on which the shares of our common stock are then listed.

The creation and issuance of the Equitrans Midstream Preferred Shares present a number of risks to current and future holders of our common stock, including a preference in favor of holders of Equitrans Midstream Preferred Shares in the payment of dividends on our common stock, the risk of dilution occurring as a result of the conversion of the Equitrans Midstream Preferred Shares into our common stock and the ability of the holders of the Equitrans Midstream Preferred Shares to vote with the holders of our common stock on most matters, as well as the risk that the holders of the Equitrans Midstream Preferred Shares will have certain other class voting rights with respect to any amendment to our organizational documents that would be adverse (other than in a de minimis manner) to any of the rights, preferences or privileges of the Equitrans Midstream Preferred Shares.

Reviews of our goodwill and intangible and other long-lived assets have resulted in significant impairment charges, and reviews of goodwill, intangible and other long-lived assets (including equity method investments) could result in future significant impairment charges.

GAAP requires us to perform an assessment of goodwill at the reporting unit level for impairment at least annually and whenever events or changes in circumstance indicate that the fair value of a reporting unit is more likely than not less than its carrying amount.

We may perform either a qualitative or quantitative assessment of potential impairment. Our qualitative assessment of potential impairment may result in the determination that a quantitative impairment analysis is not necessary. Under this elective process, we assess qualitative factors to determine whether the existence of events or circumstances leads us to determine that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If after assessing the totality of events or circumstances, we determine that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then performing a quantitative analysis is not required. However, if we conclude otherwise, then we perform a quantitative impairment analysis. If we choose not to perform a qualitative assessment, or if we choose to perform a qualitative assessment but are unable to qualitatively conclude that no impairment has occurred, then we will perform a quantitative assessment. In the case of a quantitative assessment, we estimate the fair value of the reporting unit with which the goodwill is associated and compare it to the carrying value. If the estimated fair value of a reporting unit is less than its carrying value, an impairment charge is recognized for the excess of the reporting unit's carrying value over its fair value.

Assessing the recoverability of goodwill requires significant judgments and estimates by management. Fair values of reporting units to which goodwill is recorded are primarily estimated using the discounted cash flow method, which applies significant inputs not observable in the public market (Level 3), including estimates and assumptions related to the use of an appropriate discount rate, future throughput volumes, operating costs, capital spending and changes in working capital. All of our goodwill as of September 30, 2020 relates to businesses that were acquired and valued by EQT's management in the November 2017 acquisition by EQT of Rice Energy Inc. The reporting unit to which goodwill is recorded as of September 30, 2020 is the EQM Opco reporting unit, which is a reporting unit associated with the gas gathering and compression activities of EQM Gathering Opco, LLC, an indirect wholly owned subsidiary of EQM, and which includes, as a result of the EQT Global GGA, the assets under, and operations associated with, the RMP PA Gas Gathering reporting unit. The RMP PA Gas Gathering reporting unit reflected the Pennsylvania gathering assets acquired in connection with EQM's merger with Rice Midstream Partners LP in July 2018 (RMP PA Gas Gathering) and was, effective on the EQT Global GGA Effective Date, merged with and into the EQM Opco reporting unit, with the EQM Opco reporting unit surviving.

During 2019, we recognized impairments to goodwill in the third quarter of $168.9 million and $99.2 million on RMP PA Gas Gathering and the Ohio and West Virginia gathering assets acquired in the Bolt-on Acquisition, respectively. Additionally, for the fourth quarter of 2019, we recognized impairments of goodwill of $433.2 million and $150.5 million on RMP PA Gas Gathering and the Ohio gathering assets acquired by EQM through its indirect acquisition in May 2018 of all the outstanding limited liability company interests in each of EQM West Virginia, EQM Olympus and Strike Force Holdings.

We evaluate long-lived assets, including related intangibles and equity method investments, for impairment when events or changes in circumstances indicate, in management's judgment, that the carrying value of such assets may not be recoverable (or, in the case of equity method investments, that such investments have suffered other-than-temporary declines in value). Asset recoverability is measured by comparing the carrying value of the asset or asset group (or equity method investment) with its expected future pre-tax undiscounted cash flows. These cash flow estimates require us to make projections and assumptions for many years into the future for pricing, demand, competition, operating cost, commencement of operations, resolution of relevant legal and regulatory matters, and other factors. If the carrying amount exceeds the expected future undiscounted cash flows, we recognize an impairment equal to the excess of net book value over fair value as determined by quoted market prices in active markets or present value techniques if quotes are unavailable. The determination of the fair value using present value

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techniques requires us to make projections and assumptions regarding the probability of a range of outcomes and the rates of interest used in the present value calculations. Any changes we make to these projections and assumptions could result in significant revisions to evaluations of recoverability or whether declines in value are other-than-temporary and the recognition of additional impairments.

As of March 31, 2020, we performed a recoverability test of the Hornet Midstream long-lived assets due to decreased producer activity. As a result of the recoverability test, management determined that the carrying value of the Hornet Midstream long-lived assets (consisting of gathering assets and customer-related intangible assets) was not recoverable, which resulted in impairment charges of approximately $37.9 million to the gathering assets and approximately $17.7 million to the customer-related intangible assets.

If the operations or projected operating results of our businesses decline significantly, we could incur additional goodwill impairment charges. Further, if we determine that the carrying value of long-lived assets is not recoverable or values associated with equity method investments, such as investments in the MVP Joint Venture, have suffered other-than-temporary declines, we could incur additional impairment charges. Future impairment charges could be significant and could have a material adverse impact on our financial condition and results of operations for the period in which the impairment is recorded. As of September 30, 2020, we had approximately $486.7 million of goodwill (all associated with the EQM Opco reporting unit) and $11.3 billion of long-lived assets, including intangibles and equity method investments, which will be monitored for future impairment. Management will continue to monitor and evaluate the factors underlying the fair market value of acquired businesses and assets and equity method investments to determine if any assessments are necessary and will take any additional impairment charges required.

The regulatory approval process for the construction of new midstream assets is challenging, and recent decisions by regulatory and judicial authorities in pending proceedings could impact our or the MVP Joint Venture's ability to obtain all approvals and authorizations necessary to complete certain projects on the projected time frame or at all or our ability to achieve the expected investment returns on the projects.

Certain of our internal growth projects require regulatory approval from federal, state and/or local authorities prior to construction, including any extensions from or additions to our transmission and storage system. The approval process for certain projects has become increasingly challenging, due in part to state and local concerns related to exploration and production, transmission and gathering activities in production areas, including the Marcellus and Utica Shales, and negative public perception regarding the oil and gas industry, including major pipeline projects like the MVP and MVP Southgate. Such authorization may not be granted or, if granted, such authorization may include burdensome or expensive conditions.

In addition, significant delays in the regulatory approval process for growth projects, including the MVP and MVP Southgate projects, have increased costs and negatively impacted the targeted in-service dates for the projects, and further delays may cause similar adverse effects, including to the MVP project’s targeted full in-service date in the second half of 2021 and the MVP Southgate project's target in-service date in 2022. Significant delays and cost increases in turn could adversely affect our ability, and, in the case of the MVP and MVP Southgate projects, the ability for the MVP Joint Venture and its owners, including us, to achieve the expected investment returns. The MVP project in particular is subject to several agency actions and judicial challenges (and may become subject to further actions and challenges) that must be resolved before the MVP and MVP Southgate projects can be completed, as described in more detail in Part II, "Item 1. Legal Proceedings."

Although the MVP Joint Venture is actively defending the relevant agency actions and judicial challenges to the project (and would actively defend future such matters), and is in active dialogue with all of the affected agencies to resolve these issues and restore or obtain the affected permits and other authorizations, there is no guarantee as to how long any agency proceedings and judicial challenges will take to resolve, or whether the MVP Joint Venture will ultimately succeed in restoring or obtaining the necessary permits and other authorizations (or be able to utilize alternative permitting authorities and/or construction methods) or do so within the MVP Joint Venture's targeted time frame for placing the project in service. Additionally, as the MVP project nears completion and in light of the abandonment by third parties of certain other similar pipeline projects, we have experienced and may further experience increased opposition from activists in the form of lawsuits, intervention in regulatory proceedings and otherwise, which has been and/or may be focused on the few remaining portions of the project. Such focused opposition may make it increasingly difficult to complete the project and place it in service within the targeted time frame or at all. We also expect that as pre-construction activity in respect of the MVP Southgate project increases, the MVP Southgate project may be subject to similar heightened opposition. These and other challenges could adversely affect our business, financial condition, results of operations, liquidity and ability to pay dividends.

Following the MVP in-service date, the gathering fees payable by EQT to us (or our affiliates) set forth in the EQT Global GGA are subject to potential reductions for certain contract years set forth in the EQT Global GGA, conditioned upon the in-service date of the MVP, which provide for estimated aggregate fee relief of $270 million in the first year after the in-service

65

date of the MVP, $230 million in the second year after the in-service date of the MVP and $35 million in the third year after the in-service date of the MVP. In addition, if the MVP in-service date has not occurred by January 1, 2022, EQT has an option, exercisable for a period of twelve months, to forgo $145 million of the gathering fee relief in the first year after the MVP in-service date and approximately $90 million of the gathering fee relief in the second year after the MVP in-service date in exchange for a cash payment from us (through EQM) to EQT in the amount of approximately $196 million. Any further delay in the MVP in-service date may prevent us from achieving the anticipated benefits associated with the execution of the EQT Global GGA. See "EQT Global GGA" in Note 6 to the consolidated financial statements for additional information.

Our Hammerhead gathering agreement and pipeline are the subject of a dispute with EQT and we may be affected adversely by the pendency of such dispute and/or if the dispute is resolved in a manner adverse to us.

On September 23, 2020, EQT and certain of its affiliates instituted arbitration proceedings against us relating to the Hammerhead gathering agreement, pursuant to which we agreed to construct the Hammerhead pipeline and related facilities and gather gas for EQT. See “Hammerhead Pipeline” under “Outlook” in “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” for additional information. The dispute, during its pendency, could adversely affect our business and operating results, including by causing us to incur expenses in arbitration or additional proceedings in excess of those currently expected and by diverting management time and resources. Also, while the dispute is ongoing, we believe the market price of our common stock may continue to be adversely affected by the perception that the dispute is negatively affecting our overall commercial relationship with EQT. In addition, if the dispute is resolved in a manner adverse to us, such resolution could result in EQT’s acquisition of Hammerhead assets in exchange for a reimbursement payment or otherwise affect or negate our ability to recognize revenue and generate operating cash flows in the future from such assets.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Purchases of Equity Securities

The following table sets forth the Company's repurchases of equity securities registered under Section 12 of the Exchange Act that occurred during the three months ended September 30, 2020:

Period	Total number of shares purchased (a)	Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs	Approximate dollar value of shares that may yet be purchased under plans or programs
July 2020 (July 1 - July 31)	682	$	8.28	—	$	—
August 2020 (August 1 - August 31)	—	—		—	—
September 2020 (September 1 - September 30)	—	—		—	—
Total	682	$	8.28	—	$	—

(a)Reflects shares withheld by the Company to pay taxes upon vesting of restricted stock.

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Item 6. Exhibits

Exhibit No.	Document Description	Method of Filing
10.1#	First Amendment to Gas Gathering and Compression Agreement, dated as of August 26, 2020, by and among EQT Production Company, Rice Drilling B LLC, EQT Energy, LLC and EQM Gathering Opco, LLC.	Filed herewith as Exhibit 10.1.
31.1	Rule 13(a)-14(a) Certification of Principal Executive Officer.	Filed herewith as Exhibit 31.1.
31.2	Rule 13(a)-14(a) Certification of Principal Financial Officer.	Filed herewith as Exhibit 31.2.
32	Section 1350 Certification of Principal Executive Officer and Principal Financial Officer.	Furnished herewith as Exhibit 32.
101	Inline Interactive Data File.	Filed herewith as Exhibit 101.
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).	Filed herewith as Exhibit 104.

# Certain portions of the exhibit that are not material and would be competitively harmful if publicly disclosed have been redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K. A copy of the unredacted exhibit will be furnished to the SEC upon request. Omissions are designated with brackets containing asterisks.

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Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Equitrans Midstream Corporation
(Registrant)
By:	/s/ Kirk R. Oliver
	Kirk R. Oliver
	Senior Vice President and Chief Financial Officer

Date:  November 3, 2020

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EX-10.1

Exhibit 10.1

EXECUTION VERSION

SPECIFIC TERMS IN THIS EXHIBIT HAVE BEEN REDACTED BECAUSE SUCH TERMS ARE BOTH NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO EQUITRANS MIDSTREAM CORPORATION IF PUBLICLY DISCLOSED. THESE REDACTED TERMS HAVE BEEN MARKED IN THIS EXHIBIT AT THE APPROPRIATE PLACE WITH THREE ASTERISKS [***].

FIRST AMENDMENT TO

GAS GATHERING AND COMPRESSION AGREEMENT

    THIS FIRST AMENDMENT TO GAS GATHERING AGREEMENT AND COMPRESSION AGREEMENT (this “Amendment”), dated August 26, 2020 (“Effective Date”), is made and entered into by and among EQT Corporation, a Pennsylvania corporation, (“EQT Corp.”) EQT Production Company, a Pennsylvania corporation, Rice Drilling B LLC, a Delaware limited liability company and EQT Energy, LLC, a Delaware limited liability company, (collectively, “Producer”), and EQM Gathering Opco, LLC, a Delaware limited liability company (“Gatherer”). Producer and Gatherer may be referred to herein individually as a “Party” or collectively as the “Parties.”

RECITALS

WHEREAS, the Parties entered into that certain Gas Gathering and Compression Agreement dated as of February 26, 2020 (the “Gathering Agreement”); and

    WHEREAS, the Parties desire to amend the Gathering Agreement in accordance with the terms and conditions set forth in this Amendment.

    NOW, THEREFORE, in consideration of the mutual covenants set forth herein, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties hereby agree as follows:

AGREEMENT

1.Defined Terms. Defined terms used but not defined herein shall have the meanings given to such terms in the Gathering Agreement.

2.New Definitions. The following definition is added to Article I of the Gathering Agreement:

“Incremental CompressionNotice” – As defined in Section 3.5(b).

“NV62 Receipt Point” – Receipt Point located in [***].

“Swap Notice” – As defined in Section 2.5(b).

3.Amendment to Gathering Agreement Exhibits.

(a)Exhibit C to the Gathering Agreement is hereby amended and restated to read in its entirety as set forth on Appendix A attached hereto.

(b)Exhibit J to the Gathering Agreement is hereby amended and restated to read in its entirety as set forth on Appendix B attached hereto.

(c)Exhibit L to the Gathering Agreement is hereby amended and restated to read in its entirety as set forth on Appendix C attached hereto.

(d)Exhibit O to the Gathering Agreement is hereby amended and restated to read in its entirety as set forth on Appendix D attached hereto.

(e)Exhibit P to the Gathering Agreement is hereby amended and restated to read in its entirety as set forth on Appendix E attached hereto.

(f)The Swap Notice in the form of Appendix F to this Amendment is hereby added to the Gathering Agreement as Exhibit T thereto.

(g)The Additional Connection Notice in the form of Appendix G to this Amendment is hereby added to the Gathering Agreement as Exhibit U thereto.

(h)The Incremental Compression Notice in the form of Appendix H to this Amendment is hereby added to the Gathering Agreement as Exhibit V thereto.

4.Conflicting Dedications. The reference to “Exhibit 0” in Section 2.2 of the Gathering Agreement is hereby deleted and replaced with “Exhibit D”.

5.Acreage Swaps; Transfers Free from the Dedication. The last three sentences of Section 2.5(b) of the Gathering Agreement are hereby deleted in their entirety and replaced with the following:

“Producer shall provide written Notice to Gatherer of each proposed acreage swap in the form of Exhibit T hereto (or in such form as the Parties shall otherwise mutually agree from time to time), along with information reasonably necessary to enable Gatherer to determine whether the proposed acreage swap complies with the provisions of this Section 2.5(b) (a “Swap Notice”) and shall further promptly provide Gatherer with any and all information Gatherer reasonably requests; provided, for the avoidance of doubt, the provisions of Section 18.6 shall apply to any such information that Producer provides to Gatherer. Gatherer shall affirmatively elect to provide or withhold its consent (which consent may not be unreasonably withheld) within [***] Days of receipt of such Swap Notice. In the event Gatherer does not provide timely consent, Gatherer shall be deemed to have given its consent to the proposed acreage swap or trade.”

2

6.Expansion of Gathering System; New Receipt Points within the Applicable Area. The first paragraph of Section 3.3(a) of the Gathering Agreement is hereby deleted in its entirety and replaced with the following (provided that, for the avoidance of doubt, Sections 3.3(a)(i) through (iv) shall not be deleted and replaced):

“(a)    New Receipt Points within the Applicable Area. If, at any time following the Effective Date and during the term hereof, Producer desires Gatherer to construct pipelines and facilities to establish any additional new Receipt Point(s) within the Applicable Area that was not subject to a Conflicting Dedication (“Additional Receipt Points”), Producer will deliver to Gatherer written notice in the form of Exhibit U hereto (or in such form as the Parties shall otherwise mutually agree from time to time) (“Additional Connection Notice”) not less than 24 Months prior to the Anticipated Production Date.”

7.Expansion of Gathering System; Connection of Wells; Delivery Points. The reference to “Section 3.3(c)(i)” in Section 3.3(c)(vii)(B) of the Gathering Agreement is hereby deleted and replaced with “Section 3.3(c)(ii)”.

8.Incremental Compression. Section 3.5(b) of the Gathering Agreement is hereby deleted in its entirety and replaced with the following:

“(b)    In the event Producer desires to increase the Low Pressure MDQ for any System AMI or System Compressor Station, Producer will deliver to Gatherer written notice in the form of Exhibit V hereto (or in such form as the Parties shall otherwise mutually agree from time to time) (“Incremental Compression Notice”), and thereafter Gatherer shall install incremental compression in the amounts and in the locations set forth on Exhibit P (“Incremental Compression”). If Producer desires additional Low Pressure MDQ via connection of a new Low Pressure Delivery Point, the Parties shall utilize the process detailed in Exhibit P, which shall include a corresponding increase to the Fuel Cap.”

9.Dehydration Service. Section 3.6 of the Gathering Agreement is hereby deleted in its entirety and replaced with the following:

“Exhibit L sets forth (i) Receipt Points where Gatherer is currently providing or will be providing High Pressure dehydration in addition to Low Pressure dehydration and (ii) Receipt Points where Producer provides or will provide Low Pressure dehydration in addition to High Pressure dehydration. Except for those Receipt Points identified in Exhibit L, Gatherer shall have the obligation at Gatherer’s sole cost and expense to install dehydration at all other Receipt Points at a location determined by Gatherer, which may include at Gatherer’s receipt facilities on Producer’s Well Pad for Low Pressure service and Producer shall be

3

responsible for providing conforming Gas for all Receipt Points until Gatherer may transition such High Pressure Receipt Point(s) to Low Pressure.

10.Minimum Volume Commitment. The reference to “Exhibit I” in Section 3.7(a) of the Gathering Agreement is hereby deleted and replaced with “Exhibit K.”

11.Incremental Compression Fee. Section 5.1(d) of the Gathering Agreement is hereby deleted in its entirety and replaced with the following:

(d)    Fees for providing Incremental Compression shall be calculated as follows (as such fee may be increased or decreased in accordance with Section 5.2, the “Incremental Compression Fee”):

(i)    Except as provided in clause (ii), the product of (A) the aggregate quantity of Gas serviced from Incremental Compression, stated in Dth, received from Producer or for Producer’s account (including Dedicated Gas produced by any Affiliate) during such Month multiplied by (B) the number of stages of compression utilized with such Incremental Compression multiplied by (C) the applicable amounts set forth in Exhibit H.

(ii)    For all Dedicated Gas delivered from the Gathering System to Equitrans Low Pressure Delivery Points identified by Footnote #9 and Footnote #14 on Exhibit C, the product of (A) the aggregate quantity of Gas stated in Dth, delivered to any such Low Pressure Delivery Point during such Month multiplied by (B) the number of stages of compression utilized to facilitate delivery of such Gas to such Low Pressure Delivery Point whereby Parties agree [***] stage of compression shall be applicable if the average Low Pressure Delivery Point Pressure is greater than or equal to [***] psig and [***] stages of compression if the average Low Pressure Delivery Point Pressure is less than [***] psig multiplied by (C) either (i) [***] per Dth; provided, however, Producer shall, as of the Effective Date of this Amendment, be credited an amount of [***] against any Incremental Compression Fees thereafter accrued, in the aggregate, with respect to deliveries of Gas to the Equitrans Low Pressure Delivery Points identified by Footnote #9 on Exhibit C or (ii) the Incremental Compression Fee with respect to deliveries of Gas to the Equitrans Low Pressure Delivery Points identified by Footnote #14 on Exhibit C.

12.NV62 Receipt Point. Section 5.1(f) is added to the Gathering Agreement to read as follows:

“(f)    In lieu of the Reservation Fee and Overrun Fee, Gas received at the NV62 Receipt Point will be assessed a commodity fee equal to the product of (A) the aggregate quantity of Gas received at the NV62 Receipt Point during

4

such Month multiplied by (B) [***] per Dth (as such fee may be increased or decreased in accordance with Section 5.2), and all quantities of Gas received at the NV62 Receipt Point shall not count towards the Minimum Volume Commitment.”

13.Measurement Equipment. Section 11.1 of the Gathering Agreement is hereby deleted in its entirety and replaced with the following:

“Excluding Producer owned Measurement Facilities identified in Exhibit M, Gatherer shall install, own, operate, and maintain Measurement Facilities at other Receipt Points or one or more centralized measurement sites of Gatherer as determined by Gatherer at Gatherer’s sole discretion for the purpose of measuring Gas at Receipt Points and shall ensure that the relevant Downstream Pipeline installs, owns, operates, and maintains Measurement Facilities at the Delivery Points (but downstream of any slug catcher) for Gas. Measurement Facilities measuring Gas at the Receipt Points or at any centralized measurement sites shall meet current industry standards for custody transfer measurement. Gatherer shall operate and maintain at Gatherer’s cost all Measurement Facilities, including those identified in Exhibit N. Producer shall have the right to install check Measurement Facilities at the location of Gatherer’s Measurement Facilities, including the right to install check measurement equipment on Gatherer’s meter assembly, provided such Measurement Facilities do not interfere with Gatherer’s Measurement Facilities. Gas measured at a centralized measurement site of Gatherer in accordance with the provisions hereof shall be deemed to be measured at the Receipt Point for all purposes under this Agreement. Where Gatherer installs centralized measurement, Producer shall, at Gatherer’s cost, provide Gatherer with the ability to retrieve Producer’s Well Pad information, including but not limited to pressure, flow, gas temperature, and moisture level (where Producer installs dehydration) so long as Gatherer’s equipment (and the installation thereof) does not interfere with Producer’s operations. All installation by Gatherer under this Section 11.1 shall be at Gatherer’s sole cost.”

14.Exhibits. The Parties agree that the terms of the Gathering Agreement, as amended hereby, are subject to the terms and conditions set forth on the Exhibits to the Gathering Agreement, including any footnotes set forth thereon.

15.Effect. Except as expressly provided in this Amendment, all of the terms and provisions of the Gathering Agreement are and will remain in full force and effect and are hereby ratified and confirmed by the Parties.

16.Governing Law.

5

(a)This Amendment shall be governed by, construed, and enforced in accordance with the laws of the Commonwealth of Pennsylvania without regard to choice of law principles.

(b)The Parties agree that the appropriate, exclusive and convenient forum for any disputes among any of the Parties arising out of this Amendment or the transactions contemplated hereby shall be in any state or federal court in the City of Pittsburgh and County of Allegheny, Pennsylvania, and each of the Parties irrevocably submits to the jurisdiction of such courts solely in respect of any proceeding arising out of or related to this Amendment. The Parties further agree that the Parties shall not bring suit with respect to any disputes arising out of this Amendment or the transactions contemplated hereby in any court or jurisdiction other than the above specified courts. EACH PARTY HEREBY WAIVES ITS RIGHT TO TRIAL BY JURY IN ANY PROCEEDING ARISING OUT OF OR RELATING TO THIS AMENDMENT, WHETHER SOUNDING IN CONTRACT, TORT OR OTHERWISE.

17.Counterpart Execution. This Amendment may be executed in any number of counterparts, each of which shall be considered an original, and all of which shall be considered one and the same instrument.

18.Miscellaneous Provisions. The provisions of Article 18 of the Gathering Agreement, other than Sections 18.2, 18.3, 18.15, 18.16 and 18.17, shall apply to this Amendment mutatis mutandis.

[Signature Page Follows]

6

    IN WITNESS WHEREOF, each of the Parties has duly executed this Amendment effective as of the Effective Date.

PRODUCER:

EQT CORPORATION,

a Pennsylvania corporation

By:     /s/ Toby Rice            

Name: Toby Rice

Title:      President & CEO

EQT PRODUCTION COMPANY,

a Pennsylvania corporation

By:     /s/ Toby Rice            

Name: Toby Rice

Title:      President & CEO

RICE DRILLING B LLC,

a Delaware limited liability company

By:     /s/ Toby Rice            

Name: Toby Rice

Title:      President & CEO

EQT ENERGY, LLC,

a Delaware limited liability company

By:     /s/ Keith Shoemaker        

Name:      Keith Shoemaker

Title:      SVP Commercial

[Signature Page to First Amendment to Gas Gathering and Compression Agreement]

GATHERER:

EQM GATHERING OPCO, LLC,

a Delaware limited liability company

By:     /s/ Paul Kress            

Name: Paul Kress

Title:     Vice President,

Business Development

[Signature Page to First Amendment to Gas Gathering and Compression Agreement]

APPENDIX A

(Exhibit C to Gathering Agreement)

[See attached].

Appendix A

Exhibit 10.1

EXECUTION VERSION

[***]

APPENDIX B

(Exhibit J to Gathering Agreement)

CASH BONUS PAYMENT

Section 1.1    Henry Hub Cash Bonus. Subject to Section 1.2 of this Exhibit J, during each Calendar Quarter beginning with the first Day of the Calendar Quarter in which the MVP In-Service Date occurs (the “Cash Bonus Trigger Date”) and continuing until the earlier of the last Day of (a) the twelfth (12th) Calendar Quarter following the Cash Bonus Trigger Date and (b) the Calendar Quarter ending December 31, 2024, Producer shall pay to Gatherer a quarterly cash payment (the “Cash Bonus”), if any, as follows:

(a)    During the first four (4) Calendar Quarters following the Cash Bonus Trigger Date (the “First Cash Bonus Period”), (i) for each such Calendar Quarter that ends prior to January 1, 2024, the Cash Bonus shall equal (A) the product of (x) the Minimum Volume Commitment applicable as of the last Day of such Calendar Quarter and (y) the number of Days in such Calendar Quarter, multiplied by (B) 15% of every $0.01 by which the average of each Natural Gas – Henry Hub – NYMEX closing settlement price for the First Nearby Month Future Contractcorresponding to the relevant Calculation Period during such Calendar Quarter exceeds $2.50 per Dth, and (ii) for each such Calendar Quarter, if any, in 2024, the Cash Bonus shall equal (A) the product of (x) the Minimum Volume Commitment applicable as of the last Day of such Calendar Quarter and (y) the number of Days in such Calendar Quarter, multiplied by (B) 15% of every $0.01 by which the average of each Natural Gas – Henry Hub – NYMEX closing settlement price for the First Nearby Month Future Contractcorresponding to the relevant Calculation Period during such Calendar Quarter exceeds $2.70 per Dth.

(b)    During the second four (4) Calendar Quarters following the Cash Bonus Trigger Date (the “Second Cash Bonus Period”), (i) for each such Calendar Quarter that ends prior to January 1, 2024, the Cash Bonus shall equal (A) the product of (x) the Minimum Volume Commitment applicable as of the last Day of such Calendar Quarter and (y) the number of Days in such Calendar Quarter, multiplied by (B) 15% of every $0.01 by which the average of each Natural Gas – Henry Hub – NYMEX closing settlement price for the First Nearby Month Future Contractcorresponding to the relevant Calculation Period during such Calendar Quarter exceeds $2.50 per Dth, and (ii) for each such Calendar Quarter, if any, in 2024, the Cash Bonus shall equal (A) the product of (x) the Minimum Volume Commitment applicable as of the last Day of such Calendar Quarter and (y) the number of Days in such Calendar Quarter, multiplied by (B) 15% of every $0.01 by which the average of each Natural Gas – Henry Hub – NYMEX closing settlement price for the First Nearby Month Future Contractcorresponding to the relevant Calculation Period during such Calendar Quarter exceeds $2.70 per Dth.

(c)    During the third four (4) Calendar Quarters following the Cash Bonus Trigger Date (the “Third Cash Bonus Period,” and together with the First Cash Bonus Period and the Second Cash Bonus Period, the “Cash Bonus Periods” and each individually a “Cash Bonus Period”), (i) for each such Calendar Quarter that ends prior to January 1, 2024, the Cash

Appendix B

Bonus shall equal (A) the product of (x) the Minimum Volume Commitment applicable as of the last Day of such Calendar Quarter and (y) the number of Days in such Calendar Quarter, multiplied by (B) 15% of every $0.01 by which the average of each Natural Gas – Henry Hub – NYMEX closing settlement price for the First Nearby Month Future Contractcorresponding to the relevant Calculation Period during such Calendar Quarter exceeds $2.50 per Dth, and (ii) for each such Month, if any, in 2024, the Cash Bonus shall equal (A) the product of (x) the Minimum Volume Commitment applicable as of the last Day of such Calendar Quarter and (y) the number of Days in such Calendar Quarter, multiplied by (B) 15% of every $0.01 by which the average of each Natural Gas – Henry Hub – NYMEX closing settlement price for the First Nearby Month Future Contractcorresponding to the relevant Calculation Period during such Calendar Quarter exceeds $2.70 per Dth.

Section 1.2    Cash Bonus Cap. The total Cash Bonuses paid by the Producer in respect of any Cash Bonus Period shall not exceed $60,000,000.

Section 1.3    Cash Bonus Invoicing. The Cash Bonus may be incorporated into the invoice submitted to the Producer pursuant to Section 13.1 of this Agreement for Services and shall be due upon the terms and conditions set forth in this Agreement. Notwithstanding the foregoing, Gatherer may provide Producer with a supplemental invoice for a Cash Bonus following the Calendar Quarter in which any such Cash Bonus accrues, and such invoice shall be paid by Producer, by wire transfer of immediately available funds, no later than 10 Business Days following Producer’s receipt thereof.

Appendix B

APPENDIX C

(Exhibit L to Gathering Agreement)

Appendix C

Appendix C

APPENDIX D

(Exhibit O to Gathering Agreement)

[***]

Appendix D

APPENDIX E

(Exhibit P to Gathering Agreement)

INCREMENTAL COMPRESSION

Incremental Compression
AMIs	Total HP	Anticipated TIL
Pisces	10,000	TBD
Throckmorton	15,0001	TBD
Other PA Incremental Builds	40,000	TBD
WV Incremental Builds	40,000	TBD
Total	105,000

1 [***]

Appendix E

APPENDIX F

(Exhibit T to Gathering Agreement)

SWAP NOTICE

[INSERT DATE]

Sent via Registered Mail and Email

EQM Gathering Opco, LLC

2200 Energy Drive

Canonsburg, PA 15317

Attention: Paul Kress

Email: [***]

    Re: Acreage Swap Notice No. [*]

Ladies and Gentleman:

    Reference is made to that certain Gas Gathering and Compression Agreement by and between EQT Corporation, EQT Production Company, Rice Drilling B LLC, and EQT Energy LLC (collectively, “Producer”) and EQM Gathering Opco, LLC (“Gatherer”) executed February 26, 2020 (as may be amended, the “Gathering Agreement”). Producer and Gatherer may be referred to herein individually as a “Party” and collectively as the “Parties”. Capitalized terms used but not defined herein shall have the meanings given to such terms in the Gathering Agreement.

    Pursuant to Section 2.5(a) of the Gathering Agreement, Producer Group shall be permitted to Transfer net acres of the Dedicated Interests free of the Dedication up to the Unrestricted Amount.

    Pursuant to Section 2.5(b) of the Gathering Agreement, Producer may enter into an acreage swap which meets the criteria set forth in Section 2.5(b)(A) and (B) without Gatherer’s consent.

    Pursuant to Section 2.5(b) of the Gathering Agreement, Producer hereby provides notice to Gatherer of the proposed acreage swap, including the identity of the swap counterparty, inbound acreage, outbound acreage, any acreage shortfall or surplus, and other related information, as set forth in Exhibit A and Exhibit B hereto (the “Proposed Acreage Swap”).

    [The Parties acknowledge and agree that Proposed Acreage Swap meets the criteria set forth in Section 2.5(b)(A) and (B) of the Gathering Agreement in all respects // OR // Except for the net acres representing the Acreage Shortfall identified on Exhibit A hereto, the Parties acknowledge and agree that Proposed Acreage Swap meets the criteria set forth in Section 2.5(b)(A) and (B) of the Gathering Agreement]. [The Parties agree that, as of the date on which the Proposed Acreage Swap is consummated, the Unrestricted Amount shall be increased by

Appendix F

[***] of the net acres representing the Acreage Surplus // OR // The Parties agree that the net acres representing the Acreage Shortfall shall constitute a Transfer of net acres towards the acreage cap in Section 2.5(a) of the Gathering Agreement].

    This notice is provided to Gatherer with the express understanding that it and any related discussions are highly confidential and remain subject to Section 18.6 of the Gathering Agreement.

    Please evidence your consent to the Proposed Acreage Swap by executing in the space provided below and returning a copy of such signature page to Producer.

    Additionally, attached hereto as Exhibit C is a Memorandum of Release of Dedication (the “Memorandum”) evidencing the release of the outgoing acreage included in the Proposed Acreage Swap from the Dedication. Pursuant to Section 18.16 of the Gathering Agreement, please execute the Memorandum and return it to:

EQT Production Company

625 Liberty Avenue, Suite 1700

Pittsburgh, PA 15222

Attn: Director Midstream

    If you have any questions, please do not hesitate to contact [***] at [***].

Very truly yours,

[EQT PRODUCTION COMPANY]

By:

Name:

Title:

[RICE DRILLING B LLC]

By:

Name:

Title:

Appendix F

Consent to the Proposed Acreage Swap is provided on this [__] day of [_______], 20[__].

EQM GATHERING OPCO, LLC

By:

Name:

Title:

Appendix F

EXHIBIT A

PROPOSED ACREAGE SWAP INFORMATION

Acreage Swap Counterparty: [__________]

EQT Producer of Outbound Acreage: [EQT Production Company and/or Rice Drilling B LLC]

Applicable County: [__________]; see accompanying map attached as Exhibit B highlighting the properties included in the Proposed Acreage Swap.

Inbound Acreage (depicted in green): [__________] net acres

Outbound Acreage (depicted in red): [__________] net acres

Acreage Shortfall (Outbound Acreage less Inbound Acreage): [__________]

Acreage Surplus (Inbound Acreage less Outbound Acreage): [__________] [***]increase to the Unrestricted amount: [__________])

Conflicting Dedication: [Inbound acreage is not subject to any conflicting midstream dedication.]

Existing Development: [The outbound acreage in the Proposed Acreage Swap does not include any Wells that are connected (or in the process of being connected) to the Gathering System.]

EXHIBIT B

MAP

[See attached.]

Exhibit 10.1

EXECUTION VERSION

EXHIBIT C

MEMORANDUM OF RELEASE OF DEDICATION

[See attached.]

MEMORANDUM OF RELEASE OF DEDICATION

THIS MEMORANDUM OF RELEASE OF DEDICATION (this “Memorandum”) is entered into effective [_______], 2020 (the “Effective Date”), by and between EQT Corporation, a Pennsylvania corporation, (“EQT Corp.”) EQT Production Company, a Pennsylvania corporation, Rice Drilling B LLC, a Delaware limited liability company, EQT Energy, LLC, a Delaware limited liability company, for themselves and any Affiliates (defined below), (collectively, “Producer”), and EQM Gathering Opco, LLC, a Delaware limited liability company(“Gatherer”). Producer and Gatherer may be referred to herein individually as a “Party” or collectively as the “Parties.”

WHEREAS, Producer and Gatherer, entered into that certain Gas Gathering and Compression Agreement dated as of February 26, 2020 (the “Agreement”), pursuant to which Gatherer will provide certain gathering and other services as therein set forth;

WHEREAS, Producer and Gatherer, filed that certain Memorandum of Grant, Conveyance and Dedication dated as of [_______], 2020 (the “Memorandum of Dedication”) in the real property records of _________ County, _____________________, pursuant to which Gatherer and Producer gave notice of the existence of the Agreement and certain provisions contained therein, including the Dedication of the Dedicated Interests;

WHEREAS, the Parties desire to file this Memorandum of record in the real property records of _________ County, _____________________, to give notice of the permanent release of certain Dedicated Interests from the Dedication;

NOW THEREFORE, FOR GOOD AND VALUABLE CONSIDERATION, the receipt and sufficiency of which are hereby acknowledged, the Parties agree as follows:

1.    Incorporation of Agreement; Defined Terms. The Agreement is incorporated in its entirety herein by reference, and all capitalized terms used but not defined herein shall have the meaning ascribed to them in the Agreement.

2.    Release. Gatherer hereby permanently releases the Dedicated Interests set forth on Exhibit A hereto from the Dedication in all respects and for all purposes, and notice is hereby given to all Persons of such release.

3.    No Amendment to Agreement. This Memorandum is executed and recorded solely for the purpose of giving notice and shall neither amend nor modify the Agreement in any way.

4.    Successors and Assigns. This Memorandum will be binding upon and inure to the benefit of the Parties, and to their respective successors and permitted assigns.

5.     Further Assurances. Each Party covenants and agrees to provide the other Party with instruments reasonably requested by the other Party from time to time to evidence the release from the Dedication of any Dedicated Interests permanently released from the Dedication as contemplated by this Memorandum.

[Remainder of Page Intentionally Left Blank]

[Signature Pages to Follow]

2

IN WITNESS WHEREOF, this Memorandum has been signed by or on behalf of each of the Parties as of the Day first above written.

PRODUCER:

EQT CORPORATION, a Pennsylvania corporation

By:    

Name:    

Title:    

STATE/COMMONWEALTH __________    §

        §

COUNTY OF _____________        §

On this ___ day of __________, 2020, before me, the undersigned, personally appeared ________________, known to me or satisfactorily proven to be the person whose name is subscribed to the foregoing Memorandum, and said person acknowledged that s/he executed this Memorandum in his/her capacity as ________________ of EQT Corporation, a Pennsylvania corporation and that the same was executed for the purposes contained therein as the act and deed of EQT Corporation.

Notary Public in and for ____________________

[SEAL]

Printed or Typed Name of Notary

Signature and Acknowledgement Page to Memorandum of Dedication Release

Appendix F

EQT PRODUCTION COMPANY, a Pennsylvania corporation

By:    

Name:    

Title:    

STATE/COMMONWEALTH __________    §

        §

COUNTY OF _____________        §

On this ___ day of __________, 2020, before me, the undersigned, personally appeared ________________, known to me or satisfactorily proven to be the person whose name is subscribed to the foregoing Memorandum, and said person acknowledged that s/he executed this Memorandum in his/her capacity as ________________ of EQT Production Company, a Pennsylvania corporation and that the same was executed for the purposes contained therein as the act and deed of EQT Production Company.

Notary Public in and for ____________________

[SEAL]

Printed or Typed Name of Notary

Signature and Acknowledgement Page to Memorandum of Dedication Release

Appendix F

RICE DRILLING B LLC, a Delaware limited liability company

By:    

Name:    

Title:    

STATE/COMMONWEALTH __________    §

        §

COUNTY OF _____________        §

On this ___ day of __________, 2020, before me, the undersigned, personally appeared ________________, known to me or satisfactorily proven to be the person whose name is subscribed to the foregoing Memorandum, and said person acknowledged that s/he executed this Memorandum in his/her capacity as ________________ of Rice Drilling B LLC, a Delaware limited liability company and that the same was executed for the purposes contained therein as the act and deed of Rice Drilling B LLC.

Notary Public in and for ____________________

[SEAL]

Printed or Typed Name of Notary

Signature and Acknowledgement Page to Memorandum of Dedication Release

Appendix F

EQT ENERGY, LLC, a Delaware limited liability company

By:    

Name:    

Title:    

STATE/COMMONWEALTH __________    §

        §

COUNTY OF _____________        §

On this ___ day of __________, 2020, before me, the undersigned, personally appeared ________________, known to me or satisfactorily proven to be the person whose name is subscribed to the foregoing Memorandum, and said person acknowledged that s/he executed this Memorandum in his/her capacity as ________________ of EQT Energy LLC, a Delaware limited liability company and that the same was executed for the purposes contained therein as the act and deed of EQT Energy LLC.

Notary Public in and for ____________________

[SEAL]

Printed or Typed Name of Notary

Signature and Acknowledgement Page to Memorandum of Dedication Release

Appendix F

GATHERER:

EQM GATHERING OPCO, LLC, a Delaware limited liability company

By:    

Name:    

Title:    

COMMONWEALTH OF

PENNSYLVANIA        §

        §

COUNTY OF ______________        §

On this ___ day of __________, 2020, before me, the undersigned, personally appeared ________________, known to me or satisfactorily proven to be the person whose name is subscribed to the foregoing Memorandum, and said person acknowledged that s/he executed this Memorandum in his/her capacity as ________________ of EQM Gathering Opco, LLC, a Delaware limited liability company and that the same was executed for the purposes contained therein as the act and deed of EQM Gathering Opco, LLC.

Notary Public in and for ____________________

[SEAL]

Printed or Typed Name of Notary

Signature and Acknowledgement Page to Memorandum of Dedication Release

Appendix F

EXHIBIT A TO MEMORANDUM OF RELEASE

Released Dedicated Interests

[To be attached]

Memorandum Prepared By,

and After Recording, Return to:

[***]

EQT Production Company

625 Liberty Avenue, Suite 1700

Pittsburgh, PA 15222

Appendix F

APPENDIX G

(Exhibit U to Gathering Agreement)

ADDITIONAL CONNECTION NOTICE

[Via Email]

RE:    Gas Gathering and Compression Agreement dated as of February 26, 2020, as amended July ___, 2020 (the “Gathering Agreement”)

ADDITIONAL CONNECTION NOTICE VIA EMAIL

CONNECTION NOTICE INFORMATION REQUIRED AT LEAST 24 MONTHS IN ADVANCE OF FIRST SERVICE AND SHALL INCLUDE THE FOLLOWING, SUBJECT TO THE GATHERING AGREEMENT:

1.RECEIPT POINT NAME

2.WELL PAD COORDINATES

3.SPACE ON PAD FOR MEASUREMENT FACILITIES (YES/NO).

a.IF PAD DESIGN IS NOT AVAILABLE AND SUBMITTED WITH ADDITIONAL CONNECTION NOTICE PROVIDE THE EXPECTED DATE PAD DESIGN WILL BE AVAILABLE BEFORE CONFIRMATION NOTICE

4.LATERAL LENGTH

5.REQUIRED DELIVERY PRESSURE

6.PRODUCER’S WORKING INTEREST IN PLANNED WELL(S)

7.OPERATOR OF WELL(S)

8.TARGET FORMATION AND DEPTH OF WELL(S)

9.PROJECTED WELL PAD IP FLOW AND PROJECTED 24 MONTH PRODUCTION FORECAST

10.ANTICIPATED DATE OF FIRST FLOW:

a.IN ADDITION, IF BUYBACK GAS DESIRED, PRODUCER TO PROVIDE START DATE OF THIS WITH DESIRED PRESSURE AND FLOW RATE

Appendix G

APPENDIX H

(Exhibit V to Gathering Agreement)

INCREMENTAL COMPRESSION REQUEST FORM

Project Name:	Requesting Company:
System:	Date of Request Submission:

Facility Request:

Compression Request
Facility Description	Requested Capacity, MMcfd	Requested Max and Min Suction Pressure	Affected Pads		Expected Forecast with Uplift	Requested Service Date	Previously Requested Service Date (if applicable)
Does Producer have any owned land available that could be used for facilities? Yes ☐							No ☐
Would Producer accept earlier TIL date if possible? Yes ☐				No ☐ If yes, earliest acceptable date:

Delivery Point Request
Facility Description	Delivery Point Company	Delivery Point Pipeline	Capacity, MMcfd

For Midstream Use:

	Compression Confirmation
Facility Name		Target Max and Min Suction Pressure, PSIG	Design Discharge, PSIG	Design Capacity at Max and Min Suction Pressure, MMcfd	HP Required	Suction Pressure When 2nd stage of Compression is Required	Initial Expected COD/TIL Date	Pads to flow to comp. on COD/TIL Date

Delivery Point Confirmation
Facility Description	Delivery Point Company	Delivery Point Pipeline	Capacity, MMcfd

Approved:

Date:

Appendix H

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Thomas F. Karam, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Equitrans Midstream Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:  November 3, 2020

/s/ Thomas F. Karam

Thomas F. Karam

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Kirk R. Oliver, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Equitrans Midstream Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 3, 2020

/s/ Kirk R. Oliver

Kirk R. Oliver

Senior Vice President and Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION

In connection with the QuarterlyReport of Equitrans Midstream Corporation on Form 10-Q for the period ended September 30, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned certify pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)    The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Equitrans Midstream Corporation.

/s/ Thomas F. Karam	November 3, 2020
Thomas F. Karam Chief Executive Officer
/s/ Kirk R. Oliver	November 3, 2020
Kirk R. Oliver Senior Vice President and Chief Financial Officer

XML

Cover - shares	9 Months Ended
	Sep. 30, 2020	Oct. 31, 2020	Dec. 31, 2019
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	001-38629
Entity Registrant Name	EQUITRANS MIDSTREAM CORPORATION
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	83-0516635
Entity Address, Address Line One	2200 Energy Drive
Entity Address, City or Town	Canonsburg
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15317
City Area Code	724
Local Phone Number	271-7600
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	ETRN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Small Business Entity	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		432,470,000
Mezzanine equity, preferred shares outstanding (in shares)	30,018,000	30,018,000	0
Entity Central Index Key	0001747009
Amendment Flag	false
Current Fiscal Year End	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3

XML

Statements of Consolidated Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Operating revenues	[1]	$ 350,000	$ 408,434	$ 1,143,703	$ 1,204,383
Operating expenses:
Operating and maintenance	[1]	33,905	43,021	113,990	117,460
Selling, general and administrative	[1]	31,626	24,151	94,186	83,553
Separation and other transaction costs		984	256	23,797	24,606
Depreciation		66,772	59,460	191,271	166,730
Amortization of intangible assets		16,204	14,540	46,990	38,677
Impairment of long-lived assets	[2]	0	305,459	55,581	385,594
Total operating expenses		149,491	446,887	525,815	816,620
Operating income (loss)		200,509	(38,453)	617,888	387,763
Equity income	[3]	60,917	44,448	171,233	112,293
Other income	[4]	21,864	70	39,006	2,637
Loss on early extinguishment of debt	[5]	0	0	24,864	0
Net interest expense	[1]	86,411	65,606	219,960	188,268
Income (loss) before income taxes		196,879	(59,541)	583,303	314,425
Income tax expense		28,440	1,948	81,846	45,868
Net income (loss)		168,439	(61,489)	501,457	268,557
Net income attributable to noncontrolling interests		3,973	4,336	210,765	203,562
Net income (loss) attributable to Equitrans Midstream		164,466	(65,825)	290,692	64,995
Preferred dividends	[6]	14,628	0	44,132	0
Net income (loss) attributable to Equitrans Midstream common shareholders		$ 149,838	$ (65,825)	$ 246,560	$ 64,995
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders - basic (in dollars per share)	[7]	$ 0.35	$ (0.26)	$ 0.78	$ 0.26
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders - diluted (in dollars per share)	[7]	$ 0.35	$ (0.26)	$ 0.78	$ 0.25
Weighted average common shares outstanding - basic (in shares)		432,773,000	254,915,000	314,411,000	254,868,000
Weighted average common shares outstanding - diluted (in shares)		432,821,000	254,915,000	314,411,000	254,887,000
Statement of comprehensive income (loss):
Net income (loss)		$ 168,439	$ (61,489)	$ 501,457	$ 268,557
Other comprehensive income (loss), net of tax:
Pension and other post-retirement benefits liability adjustment, net of tax expense of $10, $7, $30 and $22		30	21	90	(252)
Other comprehensive income (loss)		30	21	90	(252)
Comprehensive income (loss)		168,469	(61,468)	501,547	268,305
Less: Comprehensive income attributable to noncontrolling interests		3,973	4,336	210,765	203,562
Less: Comprehensive income attributable to preferred dividends	[6]	14,628	0	44,132	0
Comprehensive income (loss) attributable to Equitrans Midstream common shareholders		$ 149,868	$ (65,804)	$ 246,650	$ 64,743
Dividends declared per common share (in dollars per share)		$ 0.15	$ 0.45	$ 0.45	$ 1.35

[1] Includes related party activity with EQT. See Note 7.

[2] See Note 4 for disclosure regarding impairments of long-lived assets.

[3] Represents equity income from the MVP Joint Venture. See Note 8.

[4] See Note 10 for disclosures regarding derivative instruments.

[5] See Note 9 for disclosure regarding loss on early extinguishment of debt.

[6] See Notes 2 and 11 for disclosures regarding the Equitrans Midstream Preferred Shares (as defined in Note 1)

[7] See Note 11 for disclosure regarding the Company's calculation of net income per share of common stock (basic and diluted).

XML

Statements of Consolidated Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Pension and other post-retirement benefits liability adjustments, tax expense	$ 10	$ 10	$ 10	$ 7	$ 7	$ 8	$ 30	$ 22

XML

Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income		$ 501,457	$ 268,557
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		191,271	166,730
Amortization of intangible assets		46,990	38,677
Deferred income taxes		79,415	45,868
Impairments of long-lived assets (Note 4)	[1]	55,581	385,594
Equity income (Note 8)	[2]	(171,233)	(112,293)
Other income		(38,403)	(3,866)
Loss on early extinguishment of debt	[3]	24,864	0
Share-based compensation plans		9,388	1,900
Changes in other assets and liabilities:
Accounts receivable		(11,021)	28,773
Accounts payable		3,151	(72,369)
Accrued interest		(5,592)	(39,103)
Deferred revenue		148,770	0
Other assets and other liabilities		(10,443)	(17,999)
Net cash provided by operating activities		824,195	690,469
Cash flows from investing activities:
Capital expenditures		(377,592)	(769,937)
Capital contributions to the MVP Joint Venture		(144,264)	(512,852)
Bolt-on Acquisition (as defined in Note 3), net of cash acquired		0	(837,231)
Principal payments received on the Preferred Interest		3,726	3,471
Net cash used in investing activities		(518,130)	(2,116,549)
Cash flows from financing activities:
Proceeds from revolving credit facility borrowings		1,965,000	1,969,000
Payments on revolving credit facility borrowings		(2,080,000)	(2,325,500)
Proceeds from the issuance of long-term debt		1,600,000	1,400,000
Debt issuance costs and credit facility origination fees		(26,720)	(2,563)
Payment for retirement of long-term debt		(594,000)	(32,825)
Redemption of EQM Series A Preferred Units (as defined in Note 1)		(617,338)	0
Distributions paid to noncontrolling interest EQM unitholders		(128,770)	(285,834)
Dividends paid to common shareholders		(213,524)	(333,493)
Cash Shares and Cash Amount (as defined in Note 6)		(52,323)	0
Purchase of EQGP Common Units (as defined in Note 2)		0	(238,455)
Proceeds from issuance of EQM Series A Preferred Units, net of offering costs		0	1,158,313
Net cash (used in) provided by financing activities		(211,857)	1,285,664
Net change in cash and cash equivalents		94,208	(140,416)
Cash and cash equivalents at beginning of period		88,322	294,172
Cash, restricted cash and cash equivalents at end of period		182,530	153,756
Cash paid during the period for:
Interest, net of amount capitalized		221,918	223,257
Non-cash activity during the period for:
Contract liability		121,483	0
Series A Preferred Units
Cash flows from financing activities:
Distributions paid to holders of EQM Series A Preferred Units (as defined in Note 1)		(61,931)	(22,979)
Dividends paid to holders of Equitrans Midstream Preferred Shares		(61,931)	(22,979)
Preferred Stock
Cash flows from financing activities:
Distributions paid to holders of EQM Series A Preferred Units (as defined in Note 1)		(2,251)	0
Dividends paid to holders of Equitrans Midstream Preferred Shares		(2,251)	0
Common Stock
Non-cash activity during the period for:
Issuance of Equitrans Midstream shares		2,736,229	0
Convertible Preferred Stock
Non-cash activity during the period for:
Issuance of Equitrans Midstream shares		$ 667,214	$ 0

[1] See Note 4 for disclosure regarding impairments of long-lived assets.

[2] Represents equity income from the MVP Joint Venture. See Note 8.

[3] See Note 9 for disclosure regarding loss on early extinguishment of debt.

XML

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 182,530	$ 88,322
Accounts receivable (net of allowance for credit losses of $3,609 and allowance for doubtful accounts of $285 as of September 30, 2020 and December 31, 2019, respectively)	[1],[2]	263,657	255,344
Other current assets	[2]	86,855	31,546
Total current assets		533,042	375,212
Property, plant and equipment		8,782,420	8,583,124
Less: accumulated depreciation		(943,687)	(859,157)
Net property, plant and equipment		7,838,733	7,723,967
Investment in unconsolidated entity		2,722,081	2,324,108
Goodwill		486,698	486,698
Net intangible assets		732,795	797,439
Deferred income tax asset		0	90,597
Other assets	[2]	317,331	243,688
Total assets		12,630,680	12,041,709
Current liabilities:
Current portion of revolving credit facility borrowings and long-term debt	[3]	302,500	6,000
Accounts payable		101,134	128,114
Capital contributions payable to the MVP Joint Venture		127,626	45,150
Accrued interest		67,863	73,455
Accrued liabilities		73,187	83,238
Total current liabilities		672,310	335,957
Long-term liabilities:
Revolving credit facility borrowings	[4]	485,000	902,500
Long-term debt		6,440,628	5,421,983
Contract liability	[5]	321,775	0
Deferred income tax liability		293,583	0
Regulatory and other long-term liabilities		95,889	99,189
Total liabilities		8,309,185	6,759,629
Mezzanine equity:
Equitrans Midstream Preferred Shares, 30,018 and 0 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively.	[6]	681,842	0
Shareholders' equity:
Common stock, no par value, 432,470 and 254,745 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively		3,955,934	1,292,804
Retained deficit		(781,363)	(618,062)
Accumulated other comprehensive loss		(1,936)	(2,026)
Total common shareholders' equity		3,172,635	672,716
Noncontrolling interests		467,018	4,609,364
Total shareholders' equity		3,639,653	5,282,080
Total liabilities, mezzanine equity and shareholders' equity		$ 12,630,680	$ 12,041,709

[1] See Note 1 for a discussion of the adoption of ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.

[2] Includes related party activity with EQT. See Note 7

[3] Includes aggregate borrowings outstanding on the Eureka Credit Facility (as defined in Note 9) as of September 30, 2020. See Note 9 for further detail.

[4] Includes aggregate borrowings outstanding on the Amended EQM Credit Facility (as defined in Note 9) as of September 30, 2020. As of December 31, 2019, the Company had aggregate borrowings outstanding of approximately $610 million and $293 million on the Amended EQM Credit Facility and the Eureka Credit Facility, respectively. The Company had no borrowings outstanding under the Equitrans Midstream Credit Facility as of December 31, 2019. See Note 9 for further detail.

[5] See Note 6 for disclosure regarding the Company's contract liabilities.

[6] See Note 2 for disclosures regarding the Equitrans Midstream Preferred Shares.

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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Accounts receivable, for doubtful accounts	$ 3,609,000	$ 285,000
Mezzanine equity, preferred shares outstanding (in shares)	30,018,000	0
Mezzanine equity, preferred shares issued (in shares)	30,018,000	0
Common stock, shares issued (in shares)	432,470,000	254,745,000
Common stock, shares outstanding (in shares)	432,470,000	254,745,000
Equitrans Midstream Credit Facility | Line of credit
Long term line of credit		$ 0
EQM Midstream Partners, LP | Revolving Credit Facility | EQM Credit Facility
Borrowings outstanding	$ 485,000,000	610,000,000
Eureka Midstream, LLC | Eureka Credit Facility
Borrowings outstanding		$ 293,000,000
Eureka Midstream, LLC | Eureka Credit Facility | Line of credit
Borrowings outstanding	$ 303,000,000

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Statements of Consolidated Shareholders' Equity and Mezzanine Equity (Unaudited) - USD ($) $ in Thousands		Total	Series A Preferred Units	EQM Merger	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Common Stock EQM Merger	Retained Earnings (Deficit)	Retained Earnings (Deficit) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Noncontrolling Interests	Noncontrolling Interests Series A Preferred Units	Noncontrolling Interests EQM Merger
Beginning balance (in shares) at Dec. 31, 2018						254,271,000
Beginning balance at Dec. 31, 2018		$ 5,259,633				$ 425,370		$ 33,932		$ (1,509)	$ 4,801,840
Increase (Decrease) in Partners' Capital
Net income		199,566						56,299			143,267
Pension and other post-retirement benefits liability adjustment, net of tax expense		21						316		(295)
Dividends		(104,251)						(104,251)
Share-based compensation plans (in shares)						413,000
Share-based compensation plans		1,108				$ 853					255
Distributions paid to noncontrolling interest unitholders		(94,030)									(94,030)
Net changes in ownership of consolidated entities		(346,543)				991,098					(1,337,641)
Share Purchase Agreements (as defined in Note 6)		(238,455)				$ (38,648)					(199,807)
Ending balance (in shares) at Mar. 31, 2019						254,684,000
Ending balance at Mar. 31, 2019		$ 4,677,049				$ 1,378,673		(13,704)		(1,804)	3,313,884
Increase (Decrease) in Mezzanine Equity
Dividends (in dollars per share)		$ 0.41
Pension and other post-retirement benefits liability adjustments, tax expense		$ 8
Beginning balance (in shares) at Dec. 31, 2018						254,271,000
Beginning balance at Dec. 31, 2018		5,259,633				$ 425,370		33,932		(1,509)	4,801,840
Increase (Decrease) in Partners' Capital
Net income		268,557
Ending balance (in shares) at Sep. 30, 2019						254,744,000
Ending balance at Sep. 30, 2019		5,941,250				$ 1,381,092		(234,250)		(1,761)	4,796,169
Increase (Decrease) in Mezzanine Equity
Pension and other post-retirement benefits liability adjustments, tax expense		22
Beginning balance (in shares) at Mar. 31, 2019						254,684,000
Beginning balance at Mar. 31, 2019		4,677,049				$ 1,378,673		(13,704)		(1,804)	3,313,884
Increase (Decrease) in Partners' Capital
Net income		130,480						74,521			55,959
Pension and other post-retirement benefits liability adjustment, net of tax expense		22								22
Dividends		(114,608)						(114,608)
Share-based compensation plans (in shares)						7,000
Share-based compensation plans		1,510				$ 1,510
Distributions paid to noncontrolling interest unitholders		(95,278)									(95,278)
Issuance of EQM Series A Preferred Units, net of offering costs		1,158,313									1,158,313
Bolt-on Acquisition		486,062									486,062
Net changes in ownership of consolidated entities		1,627				$ 1,627
Ending balance (in shares) at Jun. 30, 2019						254,691,000
Ending balance at Jun. 30, 2019		$ 6,245,177				$ 1,381,810		(53,791)		(1,782)	4,918,940
Increase (Decrease) in Mezzanine Equity
Dividends (in dollars per share)		$ 0.45
Pension and other post-retirement benefits liability adjustments, tax expense		$ 7
Net income		(61,489)						(65,825)			4,336
Pension and other post-retirement benefits liability adjustment, net of tax expense		21								21
Dividends		(114,634)						(114,634)
Share-based compensation plans (in shares)						53,000
Share-based compensation plans		(718)				$ (718)
Distributions paid to noncontrolling interest unitholders		(96,526)									(96,526)
Distributions paid to EQM Series A Preferred unitholders			$ (22,979)									$ (22,979)
Bolt-on Acquisition measurement period adjustments (Note 3)		(7,602)									(7,602)
Ending balance (in shares) at Sep. 30, 2019						254,744,000
Ending balance at Sep. 30, 2019		$ 5,941,250				$ 1,381,092		(234,250)		(1,761)	4,796,169
Increase (Decrease) in Mezzanine Equity
Dividends (in dollars per share)		$ 0.45
Pension and other post-retirement benefits liability adjustments, tax expense		$ 7
Beginning balance (in shares) at Dec. 31, 2019		254,745,000				254,745,000
Beginning balance at Dec. 31, 2019		$ 5,282,080			$ (3,718)	$ 1,292,804		(618,062)	$ (3,718)	(2,026)	4,609,364
Increase (Decrease) in Partners' Capital
Net income		189,560						69,732			119,828
Pension and other post-retirement benefits liability adjustment, net of tax expense		30								30
Dividends (shares)						(178,000)
Dividends		(115,400)						(115,400)
Share-based compensation plans (in shares)						85,000
Share-based compensation plans		4,785				$ 4,500					285
Distributions paid to noncontrolling interest unitholders		(96,526)									(96,526)
Distributions paid to EQM Series A Preferred unitholders		(25,501)									(25,501)
Share Purchase Agreements (as defined in Note 6) (in shares)						(25,300,000)
Share Purchase Agreements (as defined in Note 6)		(190,992)						(190,992)
Ending balance (in shares) at Mar. 31, 2020						229,352,000
Ending balance at Mar. 31, 2020		5,044,318				$ 1,297,304		(858,440)		(1,996)	4,607,450
Mezzanine Equity, beginning balance at Dec. 31, 2019	[1]	0
Mezzanine Equity, ending balance at Mar. 31, 2020		$ 0
Increase (Decrease) in Mezzanine Equity
Dividends (in dollars per share)		$ 0.45
Pension and other post-retirement benefits liability adjustments, tax expense		$ 10
Beginning balance (in shares) at Dec. 31, 2019		254,745,000				254,745,000
Beginning balance at Dec. 31, 2019		$ 5,282,080			$ (3,718)	$ 1,292,804		(618,062)	$ (3,718)	(2,026)	4,609,364
Increase (Decrease) in Partners' Capital
Net income		$ 501,457
Ending balance (in shares) at Sep. 30, 2020		432,470,000				432,470,000
Ending balance at Sep. 30, 2020		$ 3,639,653				$ 3,955,934		(781,363)		(1,936)	467,018
Mezzanine Equity, beginning balance at Dec. 31, 2019	[1]	0
Mezzanine Equity, ending balance at Sep. 30, 2020	[1]	681,842
Increase (Decrease) in Mezzanine Equity
Pension and other post-retirement benefits liability adjustments, tax expense		30
Beginning balance (in shares) at Mar. 31, 2020						229,352,000
Beginning balance at Mar. 31, 2020		5,044,318				$ 1,297,304		(858,440)		(1,996)	4,607,450
Increase (Decrease) in Partners' Capital
Net income, excluding amount attributable mezzanine equity		141,207						54,243			86,964
Pension and other post-retirement benefits liability adjustment, net of tax expense		30								30
Dividends		(34,634)						(34,634)
Share-based compensation plans (in shares)						(20,000)
Share-based compensation plans		1,856				$ 1,856
Distributions paid to noncontrolling interest unitholders		(32,244)									(32,244)
Net changes in ownership of consolidated entities						82,700					579,200
Distributions paid to EQM Series A Preferred unitholders		(25,501)		$ (10,929)							(25,501)		$ (10,929)
Redemption of EQM Series A Preferred Units		(617,338)						(27,253)			(590,085)
Restructuring Agreement (as defined in Note 1)		(661,874)				$ (82,717)					(579,157)
EQM Merger (as defined in Note 1) (in shares)						203,137,000
EQM Merger (as defined in Note 1)		(257,224)				$ 2,736,229					(2,993,453)
Ending balance (in shares) at Jun. 30, 2020						432,469,000
Ending balance at Jun. 30, 2020		3,547,667				$ 3,952,672		(866,084)		(1,966)	463,045
Mezzanine Equity, beginning balance at Mar. 31, 2020		0
Increase (Decrease) in Mezzanine Equity
Mezzanine Equity, Net income		2,251
Mezzanine Equity, Restructuring Agreement (as defined in Note 1)		667,214
Mezzanine Equity, ending balance at Jun. 30, 2020		$ 669,465
Increase (Decrease) in Mezzanine Equity
Dividends (in dollars per share)		$ 0.15
Pension and other post-retirement benefits liability adjustments, tax expense		$ 10
Net income		168,439
Net income, excluding amount attributable mezzanine equity		153,811						149,838			3,973
Pension and other post-retirement benefits liability adjustment, net of tax expense		30								30
Dividends		(65,117)						(65,117)
Share-based compensation plans (in shares)						1,000
Share-based compensation plans		$ 3,262				$ 3,262
Net changes in ownership of consolidated entities							$ 2,700,000						$ 3,000,000
Ending balance (in shares) at Sep. 30, 2020		432,470,000				432,470,000
Ending balance at Sep. 30, 2020		$ 3,639,653				$ 3,955,934		$ (781,363)		$ (1,936)	$ 467,018
Increase (Decrease) in Mezzanine Equity
Mezzanine Equity, Net income		14,628
Mezzanine Equity, Dividends paid to holders of Equitrans Midstream Preferred Shares ($0.075 per share)		(2,251)
Mezzanine Equity, ending balance at Sep. 30, 2020	[1]	$ 681,842
Increase (Decrease) in Mezzanine Equity
Dividends (in dollars per share)		$ 0.15
Pension and other post-retirement benefits liability adjustments, tax expense		$ 10

[1] See Note 2 for disclosures regarding the Equitrans Midstream Preferred Shares.

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Statements of Consolidated Shareholders' Equity and Mezzanine Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Pension and other post-retirement benefits liability adjustments, tax expense	$ 10	$ 10	$ 7	$ 7	$ 8
Dividends (in dollars per share)	$ 0.15	$ 0.45	$ 0.45	$ 0.45	$ 0.41
EQM Midstream Partners, LP
Cash distributions declared (in dollars per unit)	0.3875	1.16	1.160	$ 1.145	$ 1.13
Series A Preferred Units
Cash distributions declared (in dollars per unit)			$ 0.9339
Series A Preferred Units | EQM Midstream Partners, LP
Cash distributions declared (in dollars per unit)	$ 1.0364	$ 1.0364

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Financial Statements

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Financial Statements

Financial Statements

Organization. On November 12, 2018, Equitrans Midstream Corporation (together with its consolidated subsidiaries as applicable, the Company or Equitrans Midstream), EQT and, for certain limited purposes, EQT Production Company, a wholly owned subsidiary of EQT, entered into a Separation and Distribution Agreement, pursuant to which, among other things, EQT effected the separation of EQT's midstream business, which was composed of the separately-operated natural gas gathering, transmission and storage and water services operations of EQT, from EQT's upstream business, which was composed of the natural gas, oil and natural gas liquids development, production and sales and commercial operations of EQT (the Separation), including the transfer of certain assets and liabilities to Equitrans Midstream, and distributed 80.1% of the then-outstanding shares of common stock, no par value, of Equitrans Midstream (Equitrans Midstream common stock) to EQT shareholders of record as of the close of business on November 1, 2018 (the Distribution). The Distribution was effective at 11:59 p.m., Eastern Time, on November 12, 2018. As part of the Separation, EQT retained the remaining 19.9% of the outstanding shares in Equitrans Midstream.

EQM Merger. On June 17, 2020, pursuant to that certain Agreement and Plan of Merger, dated as of February 26, 2020 (the EQM Merger Agreement), by and among the Company, EQM LP Corporation, a wholly owned subsidiary of the Company (EQM LP), LS Merger Sub, LLC, a wholly owned subsidiary of EQM LP (Merger Sub), EQM and EQGP Services, LLC, the general partner of EQM (the EQM General Partner), Merger Sub merged with and into EQM (the EQM Merger), with EQM continuing and surviving as an indirect, wholly owned subsidiary of the Company. Upon consummation of the EQM Merger, the Company acquired all of the outstanding common units representing limited partner interests in EQM (EQM Common Units) that the Company and its subsidiaries did not already own. Following the closing of the EQM Merger, EQM was no longer a publicly traded entity. See Note 2 for further information on the EQM Merger.

Preferred Restructuring Agreement. On February 26, 2020, Equitrans Midstream and EQM entered into a Preferred Restructuring Agreement (the Restructuring Agreement) with all of the holders of the Series A Perpetual Convertible Preferred Units representing limited partner interests in EQM (such units, EQM Series A Preferred Units and, such investors, collectively, the Investors), pursuant to which, at the effective time of the EQM Merger (the Effective Time): (i) EQM redeemed $600 million aggregate principal amount of the Investors' EQM Series A Preferred Units issued and outstanding immediately prior to the Restructuring Closing (defined below), which occurred substantially concurrent with the closing of the EQM Merger, for cash at 101% of the EQM Series A Preferred Unit purchase price of $48.77 per such unit (the EQM Series A Preferred Unit Purchase Price) plus any accrued and unpaid distribution amounts and partial period distribution amounts, and (ii) immediately following such redemption, each remaining issued and outstanding EQM Series A Preferred Unit was exchanged for 2.44 shares of a newly authorized and created series of preferred stock, without par value, of Equitrans Midstream, convertible into Equitrans Midstream common stock (the Equitrans Midstream Preferred Shares) on a one for one basis, in each case, in connection with the occurrence of the “Series A Change of Control” (as defined in the Fourth Amended and Restated Agreement of Limited Partnership of EQM (as amended, the Former EQM Partnership Agreement)) that occurred upon the closing of the EQM Merger (collectively, the Restructuring and, the closing of the Restructuring, the Restructuring Closing). See Note 2 for further information on the Restructuring Agreement.

Basis of Presentation. References in these financial statements to Equitrans Midstream or the Company refer collectively to Equitrans Midstream Corporation and, as applicable, its consolidated subsidiaries for all periods presented, unless otherwise indicated.

The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the requirements of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, these unaudited consolidated financial statements include all adjustments (consisting of only normal, recurring adjustments, unless otherwise disclosed in this Quarterly Report on Form 10-Q) necessary for a fair presentation of the financial position of the Company as of September 30, 2020 and December 31, 2019, the results of its operations and equity for the three and nine months ended September 30, 2020 and 2019 and its cash flows for the nine months ended September 30, 2020 and 2019. The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements at that date but does not include all of the information and notes required by GAAP for complete financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2019, which includes all disclosures required by GAAP.

Due to, among other things, the seasonal nature of the Company's utility customer contracts and temporary volume curtailments by certain of the Company's customers, including EQT, as well as producers’ well completion activities and varying needs for

fresh and produced water (which are partially driven by horizontal lateral lengths and the number of completion stages per well), the interim statements for the three and nine months ended September 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020.

For further information, refer to the Company's annual consolidated financial statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2019, as well as "Management's Discussion and Analysis of Financial Condition and Results of Operations" contained herein.

Recently Issued Accounting Standards

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The standard amended guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, this standard eliminated the probable initial recognition threshold in then current GAAP, and, in its place, requires an entity to recognize its current estimate of all expected credit losses. The amendments affected loans, debt securities, trade receivables, contract assets, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope of the standard that have the contractual right to receive cash. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses (Topic 326). The update provides entities with targeted transition relief that is intended to increase comparability of financial statement information for some entities that otherwise would have measured similar financial instruments using different measurement methodologies. In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments – Credit Losses. The update clarifies and addresses stakeholders' specific issues in ASU 2016-13.

The Company adopted the standard on January 1, 2020, using the modified retrospective method for all financial assets recorded at amortized cost. Results for reporting periods beginning after January 1, 2020 are presented under Topic 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company's current expected credit loss (CECL) methodology considers risks of collection based on a customer’s current credit status. The standard requires an entity to assess whether financial assets share similar risk characteristics and, if so, group such assets in a pool. Customer balances are aggregated for evaluation based on their credit risk rating, which takes into account changes in economic factors that impact a customer’s ability to meet its financial obligations. The Company's CECL methodology assigns a reserve, even if remote, to each customer based on credit risk. The table below summarizes the changes in the allowance for credit losses by outstanding receivable for the nine months ended September 30, 2020:

	Accounts Receivable		Contract Asset (a)		Other Assets (b)		Total
Balance at December 31, 2019	$	(285)	$	—	$	—	$	(285)
Adoption of Topic 326	(2,708)		—		(1,010)		(3,718)
Provision for (recovery of) expected credit losses	(616)		(222)		26		(812)
Balance at September 30, 2020	$	(3,609)	$	(222)	$	(984)	$	(4,815)

(a)    Included in other current assets in the consolidated balance sheets.

(b)    Includes the Company's Preferred Interest in EES and other long-term receivables.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement, Changes to the Disclosure Requirements for Fair Value Measurement, which makes a number of changes to the hierarchy associated with Level 1, 2 and 3 fair value measurements and the related disclosure requirements. This guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company adopted this standard on January 1, 2020. The adoption of this standard did not have an impact on the Company's financial statements.

In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes, which enhances and simplifies various aspects of the income tax accounting guidance including the elimination of certain exceptions related to the approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The guidance also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. The guidance will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. The Company early-adopted the standard in the first quarter of 2020 with no significant effect on its financial statements or related disclosures.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides practical expedients for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. This guidance is applicable for the Amended EQM Credit Facility, the Amended 2019 EQM Term Loan Agreement (as defined in Note 9) and the Eureka Credit Facility, as well as for each dividend following March 31, 2024 for the Equitrans Midstream Preferred Shares, which each use the London Inter-Bank Offered Rate (LIBOR) as a reference rate. The ASU is effective immediately but is only available through December 31, 2022. The Company is currently evaluating the potential impact of this standard on its financial statements.

In August 2020, the FASB issued ASU 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the accounting for convertible debt and convertible preferred stock by removing the requirements to separately present certain conversion features in equity. In addition, the amendments in the ASU 2020-06 also simplify the guidance in ASC Subtopic 815-40, Derivatives and Hedging: Contracts in Entity’s Own Equity, by removing certain criteria that must be satisfied in order to classify a contract as equity. Finally, the amendments revise the guidance on calculating earnings per share, requiring use of the if-converted method for all convertible instruments and rescinding an entity’s ability to rebut the presumption of share settlement for instruments that may be settled in cash or other assets. The amendments will be effective for fiscal years beginning after December 15, 2021. Early adoption is permitted for fiscal years beginning after December 15, 2020. Adoption of the guidance must commence at the beginning of the annual fiscal year. The Company is currently evaluating the potential impact of this standard on its financial statements.

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Investments in Consolidated, Non-Wholly-Owed Entities

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

Investments in Consolidated, Non-Wholly-Owed Entities

Investments in Consolidated, Non-Wholly Owned Entities

Investment in EQM

EQM IDR Transaction. On February 22, 2019, the Company completed a simplification transaction pursuant to that certain Agreement and Plan of Merger, dated as of February 13, 2019, by and among the Company and certain related parties, pursuant to which, among other things, (i) Equitrans Merger Sub, LP merged with and into EQGP (the IDR Merger) with EQGP continuing as the surviving limited partnership and a wholly owned subsidiary of EQM, and (ii) each of (a) the IDRs in EQM, (b) the economic portion of the general partner interest in EQM and (c) the issued and outstanding common units representing limited partner interests in EQGP (EQGP Common Units) were canceled, and, as consideration for such cancellation, certain affiliates of the Company received on a pro rata basis 80,000,000 newly-issued EQM Common Units and 7,000,000 newly-issued Class B units representing limited partner interests in EQM (Class B units), and the EQM General Partner retained the non-economic general partner interest in EQM (such transactions, collectively, the EQM IDR Transaction). Additionally, as part of the EQM IDR Transaction, 21,811,643 EQM Common Units held by EQGP were canceled and 21,811,643 EQM Common Units were issued pro rata to certain subsidiaries of the Company. As a result of the EQM IDR Transaction, the EQM General Partner replaced EQM Midstream Services, LLC as the general partner of EQM.

After giving effect to the EQM IDR Transaction, including the issuance of Class B units, Equitrans Gathering Holdings, LLC (Equitrans Gathering Holdings), EQM GP Corporation (EQM GP Corp) and Equitrans Midstream Holdings, LLC (EMH), each a wholly owned subsidiary of Equitrans Midstream, held 89,505,616, 89,536 and 27,650,303 EQM Common Units, respectively, for a total of 117,245,455 EQM Common Units. Additionally, Equitrans Gathering Holdings, EQM GP Corp and EMH held 6,153,907, 6,155 and 839,938 Class B units, respectively, for a total of 7,000,000 Class B units.

During the first quarter of 2019, as a result of the EQM IDR Transaction, the Company recorded, in the aggregate, a $991.1 million increase of common stock, no par value, a decrease in noncontrolling interest of $1.3 billion and a decrease in deferred tax asset of $346.5 million.

EQM Merger. As discussed in Note 1, on June 17, 2020, the Company, EQM, EQM LP, Merger Sub and the EQM General Partner completed the EQM Merger, pursuant to which Merger Sub merged with and into EQM, with EQM continuing and surviving as an indirect, wholly owned subsidiary of the Company. As a result of the EQM Merger, EQM is no longer a publicly traded entity.

At the Effective Time, subject to applicable tax withholding, (i) each outstanding EQM Common Unit, other than EQM Common Units owned by the Company and its subsidiaries, was converted into the right to receive 2.44 shares of Equitrans Midstream common stock (the Merger Consideration); (ii) (x) $600.0 million aggregate principal amount of the EQM Series A Preferred Units issued and outstanding immediately prior to the Effective Time were redeemed by EQM for cash at 101% of the EQM Series A Preferred Unit Purchase Price plus any accrued and unpaid distribution amounts and partial period distribution amounts, and (y) immediately following such redemption, each remaining issued and outstanding EQM Series A Preferred Unit was exchanged for 2.44 Equitrans Midstream Preferred Shares; and (iii) each outstanding phantom unit relating to an EQM Common Unit issued pursuant to the Amended and Restated EQGP Services, LLC 2012 Long-Term Incentive Plan, dated as of February 22, 2019 (the EQM LTIP), and any other award issued pursuant to the EQM LTIP, whether vested or unvested, was converted into the right to receive, with respect to each EQM Common Unit subject thereto, the Merger Consideration (plus any

accrued but unpaid amounts in relation to distribution equivalent rights). The limited partner interests in EQM owned by the Company and its subsidiaries (including the Class B units) remained outstanding as limited partner interests in the surviving entity. The EQM General Partner continued to own the non-economic general partner interest in the surviving entity.

No fractional shares of Equitrans Midstream common stock were issued in the EQM Merger; instead, all fractions of Equitrans Midstream common stock to which an EQM common unitholder otherwise would have been entitled were aggregated and the resulting fraction was rounded up to the nearest whole share of Equitrans Midstream common stock.

In connection with the EQM Merger at the Effective Time, the Company's omnibus and secondment agreements with EQM and certain other subsidiaries of the Company terminated, subject to the survival of certain license rights and indemnification obligations.

Because the Company controlled EQM both before and after the EQM Merger, the increase in the Company’s ownership interest in EQM resulting from the EQM Merger was accounted for as an equity transaction and reflected as a reduction of the noncontrolling interest associated with public ownership of EQM Common Units, offset by an increase in common stock, no par value. No gain or loss was recognized in the Company’s statement of consolidated comprehensive income as a result of the EQM Merger. In addition, the tax effects of the EQM Merger are reported as adjustments to deferred income taxes and Equitrans Midstream common stock, consistent with ASC 740, Income Taxes.

Immediately prior to the completion of the EQM Merger, the public limited partners collectively owned a 40.1% interest in EQM, excluding the impact of the EQM Series A Preferred Units. The publicly-owned EQM Common Units, prior to completion of the EQM Merger, were reflected within noncontrolling interest in the Company's consolidated balance sheets as of March 31, 2020. The portion of EQM earnings attributable to publicly held EQM Common Units prior to completion of the EQM Merger was reflected in net income attributable to noncontrolling interests in the Company's statements of consolidated comprehensive income.

During the second quarter of 2020, as a result of the EQM Merger, the Company recorded, in the aggregate, a $2.7 billion increase of common stock, no par value, a decrease in noncontrolling interest of $3.0 billion and an increase in deferred tax liability of $257.2 million.

Additionally, for the period from January 1, 2020 to June 17, 2020, the Company determined that EQM was a variable interest entity. Through the Company's ownership and control of the general partner of EQM during that period, the Company had the power to direct the activities that most significantly affected EQM's economic performance. As a result of the EQM Merger, EQM is no longer a variable interest entity.

The Company recorded $1.0 million and $23.8 million in expenses related to the EQM Merger and the EQT Global GGA (defined in Note 4) during the three and nine months ended September 30, 2020, respectively. The expenses consisted of advisor, legal and accounting fees related to the transactions and are included in separation and other transaction costs in the statements of consolidated comprehensive income.

Preferred Restructuring Agreement. As discussed in Note 1, on June 17, 2020, concurrently with the closing of the EQM Merger: (i) EQM redeemed $600 million aggregate principal amount of the EQM Series A Preferred Units issued and outstanding immediately prior to the Effective Time for cash at 101% of the EQM Series A Preferred Unit Purchase Price plus any accrued and unpaid distribution amounts and partial period distribution amounts, and (ii) immediately following such redemption, each remaining issued and outstanding EQM Series A Preferred Unit was exchanged for 2.44 Equitrans Midstream Preferred Shares, in each case, in connection with the occurrence of the “Series A Change of Control” (as defined in the Former EQM Partnership Agreement) that occurred upon the closing of the EQM Merger. The Equitrans Midstream Preferred Shares issued were not registered under the Securities Act of 1933, as amended (the Securities Act), in reliance upon the exemption provided in Section 4(a)(2) of the Securities Act and/or Regulation D promulgated thereunder.

On June 17, 2020, the Company paid cash of $617.3 million to redeem $600 million aggregate principal amount of the Investors’ EQM Series A Preferred Units and pay partial period distributions on such EQM Series A Preferred Units. At the time of the redemption, the carrying value of the EQM Series A Preferred Units was $590.1 million, resulting in a premium over the carrying value of $27.3 million. The premium represented a return similar to distributions to the holders of the EQM Series A Preferred Units and, as such, reduced net income attributable to Equitrans Midstream common shareholders, and was recorded in retained earnings (deficit) in the statements of consolidated shareholders' equity and mezzanine equity.

Pursuant to the Restructuring Agreement, in connection with the Restructuring Closing, the Company filed a statement with respect to shares, attaching a Certificate of Designations (the Certificate of Designations), with the Pennsylvania Department of State on June 17, 2020 to, among other things, authorize and establish the designations, rights and preferences of the Equitrans Midstream Preferred Shares. On August 13, 2020, pursuant to the terms of the Certificate of Designations, the Company paid

$10.9 million in the aggregate to holders of Equitrans Midstream Preferred Shares related to forgone partial period distributions on the EQM Series A Preferred Units that were converted into Equitrans Midstream Preferred Shares in connection with the EQM Merger.

The Equitrans Midstream Preferred Shares were a new class of security as of June 2020. They rank pari passu with any other outstanding class or series of preferred stock of the Company and senior to Equitrans Midstream common stock with respect to dividend rights and rights upon liquidation. The Equitrans Midstream Preferred Shares vote on an as-converted basis with Equitrans Midstream common stock and have certain other class voting rights with respect to any amendment to the Certificate of Designations or the Company’s Amended and Restated Articles of Incorporation that would be adverse (other than in a de minimis manner) to any of the rights, preferences or privileges of the Equitrans Midstream Preferred Shares.

The holders of the Equitrans Midstream Preferred Shares receive cumulative quarterly dividends at a rate per annum of 9.75% for each quarter ending on or before March 31, 2024, and thereafter quarterly dividends at a rate per annum equal to the sum of (i) three-month LIBOR as of the LIBOR Determination Date (as defined in the Certificate of Designations) in respect of the applicable quarter and (ii) 8.15%; provided that such rate per annum in respect of periods after March 31, 2024 will not be less than 10.50%. The Company is not permitted to pay any dividends on any junior securities, including on Equitrans Midstream common stock, prior to paying the quarterly dividends payable to the Equitrans Midstream Preferred Shares, including any previously accrued and unpaid dividends.

Each holder of the Equitrans Midstream Preferred Shares may elect to convert all or any portion of the Equitrans Midstream Preferred Shares owned by it into Equitrans Midstream common stock initially on a one-for-one basis, subject to certain anti-dilution adjustments and an adjustment for any dividends that have accrued but not been paid when due and partial period dividends (referred to as the “conversion rate”), at any time (but not more often than once per fiscal quarter) after April 10, 2021 (or immediately prior to a liquidation, dissolution or winding up of the Company), provided that any conversion involves an aggregate number of Equitrans Midstream Preferred Shares of at least $20.0 million (calculated based on the closing price of Equitrans Midstream common stock on the trading day preceding notice of the conversion) or such lesser amount if such conversion relates to all of a holder’s remaining Equitrans Midstream Preferred Shares or if such conversion is approved by the Company's Board of Directors.

So long as the holders of the Equitrans Midstream Preferred Shares have not elected to convert all of their Equitrans Midstream Preferred Shares into Equitrans Midstream common stock, the Company may elect to convert all of the Equitrans Midstream Preferred Shares into Equitrans Midstream common stock, at the then-applicable conversion rate, at any time after April 10, 2021 if (i) the shares of Equitrans Midstream common stock are listed for, or admitted to, trading on a national securities exchange, (ii) the closing price per share of Equitrans Midstream common stock on the national securities exchange on which the shares of Equitrans Midstream common stock are listed for, or admitted to, trading exceeds $27.99 for the 20 consecutive trading days immediately preceding notice of the conversion, (iii) the average daily trading volume of the Equitrans Midstream common stock on the national securities exchange on which the shares of Equitrans Midstream common stock are listed for, or admitted to, trading exceeds 1,000,000 shares (subject to certain adjustments) of Equitrans Midstream common stock for the 20 consecutive trading days immediately preceding notice of the conversion, (iv) the Company has an effective registration statement on file with the SEC covering resales of the shares of Equitrans Midstream common stock to be received by such holders upon any such conversion and (v) the Company has paid all prior accumulated and unpaid dividends in cash in full to the holders.

Upon certain events involving a Change of Control (as defined in the Certificate of Designations) in which more than 90% of the consideration payable to the Company, or to the holders of Equitrans Midstream common stock, is payable in cash, the Equitrans Midstream Preferred Shares will automatically convert into Equitrans Midstream common stock at a conversion ratio equal to the greater of (i) the quotient of (a) the sum of (x) $19.99 (such price, the Equitrans Midstream Preferred Share Issue Price) plus (y) any accrued and unpaid dividends as of such date, including any partial period dividends, with respect to the Equitrans Midstream Preferred Shares, divided by (b) the Equitrans Midstream Preferred Share Issue Price and (ii) the quotient of (a) the sum of (x)(1) the Equitrans Midstream Preferred Share Issue Price multiplied by (2) 110% plus (y) any accrued and unpaid dividends on such date, including any partial period dividends with respect to the Equitrans Midstream Preferred Shares, divided by (b) the volume weighted average price of the shares of Equitrans Midstream common stock for the 30-day period ending immediately prior to the execution of definitive documentation relating to the Change of Control.

In connection with other Change of Control events that do not satisfy the 90% cash consideration threshold described above, in addition to certain other conditions, each holder of Equitrans Midstream Preferred Shares may elect to (i) convert all, but not less than all, of its Equitrans Midstream Preferred Shares into Equitrans Midstream common stock at the then-applicable conversion rate, (ii) if the Company is not the surviving entity (or if the Company is the surviving entity, but Equitrans Midstream common stock will cease to be listed), require the Company to use commercially reasonable efforts to cause the

surviving entity in any such transaction to deliver, in exchange for such holder's Equitrans Midstream Preferred Shares, a substantially equivalent security that has rights, preferences and privileges substantially equivalent to the Equitrans Midstream Preferred Shares (or if the Company is unable to cause such substantially equivalent securities to be issued, to exercise the option described in clause (i) or (iv) hereof or elect to convert such Equitrans Midstream Preferred Shares at a conversion ratio reflecting a multiple of invested capital), (iii) if the Company is the surviving entity, continue to hold the Equitrans Midstream Preferred Shares or (iv) require the Company to redeem the Equitrans Midstream Preferred Shares at a price per share equal to 101% of the Equitrans Midstream Preferred Share Issue Price, plus accrued and unpaid dividends, including any partial period dividends, on the applicable Equitrans Midstream Preferred Shares as of such date, which redemption price may be payable in cash, Equitrans Midstream common stock or a combination thereof at the election of the Company's Board of Directors (and, if payable in Equitrans Midstream common stock, such Equitrans Midstream common stock will be issued at 95% of the volume-weighted average price of Equitrans Midstream common stock for the 20-day period ending on the fifth trading day immediately preceding the consummation of the Change of Control). Any holder of Equitrans Midstream Preferred Shares that requires the Company to redeem its Equitrans Midstream Preferred Shares pursuant to clause (iv) above will have the right to withdraw such election with respect to all, but not less than all, of its Equitrans Midstream Preferred Shares at any time prior to the fifth trading day immediately preceding the consummation of the Change of Control and instead elect to be treated in accordance with any of clauses (i), (ii) or (iii) above.

At any time on or after January 1, 2024, the Company will have the right, subject to applicable law, to redeem the Equitrans Midstream Preferred Shares, in whole or in part, by paying cash for each Equitrans Midstream Preferred Share to be redeemed in an amount equal to the greater of (a) the sum of (i)(1) the Equitrans Midstream Preferred Share Issue Price multiplied by (2) 110%, plus (ii) any accrued and unpaid dividends, including partial period dividends, with respect to the Equitrans Midstream Preferred Shares as of such date and (b) the amount the holder of such Equitrans Midstream Preferred Share would receive if such holder had converted such Equitrans Midstream Preferred Share into shares of Equitrans Midstream common stock at the then-applicable conversion ratio and the Company liquidated immediately thereafter.

Pursuant to the terms of the Restructuring Agreement, in connection with the Restructuring Closing, the Company entered into a registration rights agreement with the Investors (the Registration Rights Agreement) pursuant to which, among other things, the Company gave the Investors certain rights to require the Company to file and maintain one or more registration statements with respect to the resale of the Equitrans Midstream Preferred Shares and the shares of Equitrans Midstream common stock that are issuable upon conversion of the Equitrans Midstream Preferred Shares, and certain Investors have the right to require the Company to initiate underwritten offerings for the Equitrans Midstream Preferred Shares and the shares of Equitrans Midstream common stock that are issuable upon conversion of the Equitrans Midstream Preferred Shares.

During the second quarter of 2020, as a result of the Restructuring Closing, the Company recorded an increase in mezzanine equity of $667.2 million, a decrease in noncontrolling interest of $579.2 million and a decrease in common stock, no par value, of $82.7 million, net of deferred taxes of $5.3 million.

The Equitrans Midstream Preferred Shares are considered redeemable securities under GAAP due to the possibility of redemption outside the Company’s control. They are therefore presented as temporary equity in the mezzanine equity section of the Company’s consolidated balance sheets and are not considered to be a component of shareholders’ equity on the consolidated balance sheets. The Equitrans Midstream Preferred Shares were recorded at fair value as of the date of issuance, and income allocations increase the carrying value and declared dividends decrease the carrying value of the Equitrans Midstream Preferred Shares. As the Equitrans Midstream Preferred Shares are not currently redeemable and not probable of becoming redeemable, adjustment to the initial carrying amount is not necessary and would only be required if it becomes probable that the Equitrans Midstream Preferred Shares would become redeemable.

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Mergers and Acquisitions

9 Months Ended

Sep. 30, 2020

Business Combinations [Abstract]

Mergers and Acquisitions

Mergers and Acquisitions

EQM Merger. See Note 2.

Bolt-on Acquisition. On March 13, 2019, the Company (through EQM) entered into a Purchase and Sale Agreement with North Haven Infrastructure Partners II Buffalo Holdings, LLC (NHIP), an affiliate of Morgan Stanley Infrastructure Partners, pursuant to which the Company acquired from NHIP a 60% Class A interest in Eureka Midstream Holdings, LLC (Eureka Midstream) and a 100% interest in Hornet Midstream Holdings, LLC (Hornet Midstream) (collectively, the Bolt-on Acquisition) for total consideration of approximately $1.04 billion, composed of approximately $852 million in cash, net of purchase price adjustments, and approximately $192 million in assumed pro-rata debt. At the time of the acquisition, Eureka Midstream owned a 190-mile gathering header pipeline system in Ohio and West Virginia that services both dry Utica and wet Marcellus Shale production and Hornet Midstream owned a 15-mile, high-pressure gathering system in West Virginia that connects to the Eureka Midstream system. The Bolt-on Acquisition closed on April 10, 2019 and was funded through proceeds from the March

2019 private placement by EQM of an aggregate of 24,605,291 EQM Series A Preferred Units that closed concurrently with the Bolt-on Acquisition.

At the closing of the Bolt-on Acquisition, a subsidiary of Hornet Midstream terminated all of its obligations under its term loan credit agreement and repaid the $28.2 million outstanding principal balance and $0.1 million in related interest and fees.

The Company recorded $0.3 million and $17.0 million in acquisition-related expenses related to the Bolt-on Acquisition during the three and nine months ended September 30, 2019, respectively. The Bolt-on Acquisition acquisition-related expenses included $0.3 million for professional fees for the three months ended September 30, 2019 and $15.3 million for professional fees and $1.7 million for compensation arrangements for the nine months ended September 30, 2019, and are included in separation and other transaction costs in the statements of consolidated comprehensive income.

The Bolt-on Acquisition was accounted for as a business combination using the acquisition method. As a result of the acquisition, the Company recognized $99.2 million of goodwill, which was allocated to the Gathering segment. Such goodwill primarily related to additional commercial opportunities, a diversified producer customer mix, increased exposure to dry Utica and wet Marcellus acreage and operating leverage within the Gathering segment. The purchase price allocation and related adjustments were finalized during the fourth quarter of 2019. The following table summarizes the final purchase price and allocation of the fair value of the assets acquired and liabilities assumed in the Bolt-on Acquisition as of April 10, 2019 by the Company, as well as certain measurement period adjustments made subsequent to the Company's initial valuation.

(in thousands)	Preliminary Purchase Price Allocation (As initially reported)		Measurement Period Adjustments (a)		Purchase Price Allocation (As adjusted)
Consideration given:
Cash consideration (b)	$	861,250	$	(11,404)	$	849,846
Buyout of portion of Eureka Midstream Class B Units and incentive compensation	2,530		—		2,530
Total consideration	863,780		(11,404)		852,376
Fair value of liabilities assumed:
Current liabilities	52,458		(9,857)		42,601
Long-term debt	300,825		—		300,825
Other long-term liabilities	10,203		—		10,203
Amount attributable to liabilities assumed	363,486		(9,857)		353,629
Fair value of assets acquired:
Cash	15,145		—		15,145
Accounts receivable	16,817		—		16,817
Inventory	12,991		(26)		12,965
Other current assets	882		—		882
Net property, plant and equipment	1,222,284		(8,906)		1,213,378
Intangible assets (c)	317,000		(6,000)		311,000
Deferred tax asset	5,773		(5,268)		505
Other assets	14,567		—		14,567
Amount attributable to assets acquired	1,605,459		(20,200)		1,585,259
Noncontrolling interests	(486,062)		7,602		(478,460)
Goodwill as of April 10, 2019	$	107,869	$	(8,663)	$	99,206
Impairment of goodwill (d)					(99,206)
Goodwill as of September 30, 2020					$	—

(a)    The Company recorded measurement period adjustments to its preliminary acquisition date fair values due to the refinement of its valuation models, assumptions and inputs. The measurement period adjustments were based upon information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the measurement of the amounts recognized at that date.

(b)     The cash consideration for the Bolt-on Acquisition was adjusted by approximately $11.4 million related to working capital adjustments and the release of all escrowed indemnification funds to EQM.

(c)    After considering the refinements to the valuation models, the Company estimated the fair value of the customer-related intangible assets acquired as part of the Bolt-on Acquisition to be $311.0 million. As a result, the fair value of the customer-related intangible assets was decreased by $6.0 million on September 30, 2019 with a corresponding increase to goodwill. In addition, the change to the provisional amount resulted in a decrease in amortization expense and accumulated amortization of approximately $0.4 million.

(d)    During the third quarter of 2019, the Company identified impairment indicators that suggested the fair value of its goodwill was more likely than not below its carrying amount. As such, the Company performed an interim goodwill impairment assessment, which resulted in the Company recognizing impairment to goodwill of approximately $268.1 million, of which $99.2 million was associated with its Eureka/Hornet reporting unit, bringing the reporting unit's goodwill balance to zero. See Note 4 for further detail.

The estimated fair value of midstream facilities and equipment, generally consisting of pipeline systems and compression stations, was estimated using the cost approach. Significant unobservable inputs in the estimate of fair value under this approach included management's assumptions about the replacement costs for similar assets, the relative age of the acquired assets and any potential economic or functional obsolescence associated with the acquired assets. As a result, the estimated fair value of the midstream facilities and equipment represented a Level 3 fair value measurement.

As a result of the acquisition, the noncontrolling interest in Eureka Midstream was estimated to be $478.5 million. The fair value of the noncontrolling interest was calculated based on the enterprise value of Eureka Midstream and the percentage ownership not acquired by the Company. Significant unobservable inputs in the enterprise value of Eureka Midstream include future revenue estimates and future cost assumptions. As a result, the fair value measurement is based on significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement.

As part of the preliminary purchase price allocation, the Company identified intangible assets for customer relationships with third-party customers. The fair value of the customer relationships with third-party customers was determined using the income approach, which requires a forecast of the expected future cash flows generated and an estimated market-based weighted average cost of capital. Significant unobservable inputs in the determination of fair value include future revenue estimates, future cost assumptions and estimated customer retention rates. As a result, the estimated fair value of the identified intangible assets represents a Level 3 fair value measurement. The Company calculates amortization of intangible assets using the straight-line method over the estimated useful life of the intangible assets.

The Company previously utilized a useful life of 20 years for the Eureka Midstream- and Hornet Midstream-related intangible assets. As a result of expected changes in cash flows due to decreases in producer activity driven by lower natural gas prices, as of April 1, 2020, the Company prospectively changed the remaining useful life of the Eureka Midstream-related intangible assets to 10.75 years, increasing the expected annual amortization expense by $9.1 million. In addition, as a result of then expected reductions in future cash flows, as of October 1, 2019, the useful life of the Hornet Midstream-related intangible assets was prospectively changed to 7.25 years. The estimated annual amortization expense for the Eureka Midstream- and Hornet Midstream-related intangible assets for the remaining three months of 2020 and over the successive five years is as follows: 2020 $5.8 million, 2021 $23.3 million, 2022 $23.3 million, 2023 $23.3 million, 2024 $23.3 million and 2025 $23.3 million.

As discussed in Note 4, during the third quarter of 2019, as a result of a recoverability test conducted due to a decrease in producer activity, the Company determined that the estimated fair value of the Hornet Midstream-related intangible assets was not in excess of the assets’ carrying value, which resulted in an impairment charge of $36.4 million related to certain of such intangibles within the Company’s Gathering segment. The Company also performed a recoverability test during the first quarter of 2020 due to significant declines in the unit price of EQM Common Units and corresponding market capitalization, which resulted in an additional impairment charge of $17.7 million to the Hornet Midstream-related intangible assets (see Note 4). The useful life of the Hornet Midstream-related intangible assets remained 7.25 years following the first quarter 2020 recoverability test.

In conjunction with the Bolt-on Acquisition, the Company recorded tax deductible goodwill of $43.0 million. The Company does not have tax basis on the portion attributable to the former noncontrolling limited partners of EQM or on the portion attributable to the noncontrolling member of Eureka Midstream.

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Impairments of Long-Lived Assets and Other-Than-Temporary Decline in Value

9 Months Ended

Sep. 30, 2020

Property, Plant and Equipment [Abstract]

Impairments of Long-Lived Assets and Other-Than-Temporary Decline in Value

Impairments of Long-Lived Assets and Other-Than-Temporary Decline in ValueGoodwill. On February 26, 2020 (the EQT Global GGA Effective Date), the Company (through EQM) entered into a Gas Gathering and Compression Agreement (as amended, the EQT Global GGA) with EQT for the provision of certain gas gathering services to EQT in the Marcellus and Utica Shales of Pennsylvania and West Virginia (as further discussed in Note 6). Prior to the EQT Global GGA Effective Date, the Company operated three reportable operating segments and seven reporting units, which are one level below the operating segment level and are generally based on how segment management

reviews the Company's operating results. Commencing with the EQT Global GGA Effective Date, the Company reduced its reporting units from seven to six and maintained its three reportable operating segments. As of the EQT Global GGA Effective Date, the only reporting unit to which the Company had goodwill recorded related to the Pennsylvania gathering assets acquired in connection with EQM's merger with Rice Midstream Partners LP in July 2018 (RMP PA Gas Gathering reporting unit). As a result of the EQT Global GGA, the assets under, and operations associated with, the RMP PA Gas Gathering reporting unit and the reporting unit associated with the gas gathering and compression activities of EQM Gathering Opco, LLC, an indirect wholly owned subsidiary of the Company (EQM Opco reporting unit), were combined to service a collective MVC under the agreement. Therefore, effective on the EQT Global GGA Effective Date, the RMP PA Gas Gathering reporting unit was merged with and into the EQM Opco reporting unit, with the EQM Opco reporting unit surviving.

During the first quarter of 2020, the Company identified impairment indicators in the form of significant declines in the unit price of EQM Common Units and corresponding market capitalization. Management considered these declines as indicators that the fair value of the RMP PA Gas Gathering reporting unit was more likely than not below its carrying amount, and the performance of an interim quantitative goodwill impairment assessment was required. Additionally, as a result of the combination of the RMP PA Gas Gathering reporting unit and the EQM Opco reporting unit, the Company tested both the RMP PA Gas Gathering and the merged EQM Opco reporting units for goodwill impairment. In estimating the fair value of the RMP PA Gas Gathering and the merged EQM Opco reporting units, the Company used a combination of the income approach and the market approach. The Company used the income approach’s discounted cash flow method, which applies significant inputs not observable in the public market (Level 3), including estimates and assumptions related to the use of an appropriate discount rate, future throughput volumes, operating costs, capital spending and changes in working capital. The Company used the market approach’s comparable company and reference transaction methods. The comparable company method evaluates the value of a company using metrics of other businesses of similar size and industry. The reference transaction method evaluates the value of a company based on pricing multiples derived from similar transactions entered into by similar companies.

As a result of the interim assessment, the Company determined that the fair values of the RMP PA Gas Gathering reporting unit and the merged EQM Opco reporting unit, as applicable, were greater than their respective carrying values. No impairment to goodwill was recorded during the three months ended March 31, 2020. The Company believes the estimates and assumptions used in estimating its reporting units’ fair values are reasonable and appropriate; however, different assumptions and estimates could materially affect the calculated fair values of the RMP PA Gas Gathering reporting unit and the merged EQM Opco reporting unit and the resulting conclusions on impairment of goodwill, which could materially affect the Company’s results of operations and financial position. Additionally, actual results could differ from these estimates. Additional adverse changes in the future could reduce the underlying cash flows used to estimate the fair value of the merged EQM Opco reporting unit and could result in a decline in fair value that could trigger future impairment charges relating to the EQM Opco reporting unit.

The three reporting units to which the Company had goodwill during 2019 were (i) the Ohio gathering assets acquired in connection with EQM’s acquisition of the outstanding limited liability company interests in each of EQM West Virginia Midstream LLC (EQM West Virginia), EQM Olympus Midstream LLC (EQM Olympus) and Strike Force Midstream Holdings LLC (Strike Force Holdings) (collectively, Rice Retained Midstream) (ii) RMP PA Gas Gathering and (iii) the Ohio and West Virginia gathering assets acquired in the Bolt-on Acquisition (Eureka/Hornet, collectively with Rice Retained Midstream and RMP PA Gas Gathering, the Reporting Units).

During the third quarter of 2019, the Company identified impairment indicators in the form of significant declines in the unit price of EQM's Common Units and corresponding market capitalization, primarily as a result of continued suppressed natural gas prices and decreased producer drilling activity. Management considered these declines as indicators that the fair value of goodwill was more likely than not below the carrying amounts for the respective Reporting Units. As such, the performance of an interim goodwill impairment assessment was required. In estimating the fair value of each of the Reporting Units, the Company used a combination of the income approach and the market approach, both as described above.

As of August 31, 2019, the Company determined that the fair value of Rice Retained Midstream was greater than its carrying value; however, the carrying values of RMP PA Gas Gathering and Eureka/Hornet were each greater than their respective fair values. As a result, the Company recognized impairment of goodwill of $168.9 million and $99.2 million on RMP PA Gas Gathering and Eureka/Hornet, respectively. The non-cash impairment charge is included in the impairments of long-lived assets line on the Company's statements of consolidated comprehensive income.

Long-lived assets, including intangible assets and equity method investments. The Company evaluates long-lived assets, including related intangibles, for impairment when events or changes in circumstances indicate, in management's judgment, that the carrying value of such assets may not be recoverable. Asset recoverability is measured by comparing the carrying value of the asset or asset group with its expected future pre-tax undiscounted cash flows. These cash flow estimates require the Company to make projections and assumptions for many years into the future for pricing, demand, competition, operating cost and other factors. If the carrying amount exceeds the expected future undiscounted cash flows, the Company recognizes an

impairment equal to the excess of net book value over fair value as determined by quoted market prices in active markets or present value techniques if quotes are unavailable. The determination of the fair value using present value techniques requires the Company to make projections and assumptions regarding the probability of a range of outcomes and the rates of interest used in the present value calculations. Any changes the Company makes to these projections and assumptions could result in significant revisions to its evaluation of recoverability of its property, plant and equipment and the recognition of additional impairments.

As of March 31, 2020, the Company performed a recoverability test of the Hornet Midstream long-lived assets due to decreased producer activity. As a result of the recoverability test, management determined that the carrying value of the Hornet Midstream long-lived assets (which consisted of gathering assets and customer-related intangible assets) was not recoverable under ASC 360, Impairment Testing: Long-Lived Assets Classified as Held and Used. During the first quarter of 2020, the Company estimated the fair value of the Hornet Midstream asset group and determined that the fair value was not in excess of the assets’ carrying value, which resulted in impairment charges of approximately $37.9 million to the gathering assets and approximately $17.7 million to the customer-related intangible assets both within the Company’s Gathering segment. The non-cash impairment charges were recognized during the first quarter of 2020 and are included in the impairments of long-lived assets line on the statements of consolidated comprehensive income.

During the third quarter of 2019, the Company assessed its long-lived asset groups for impairment due to the triggering events described in the goodwill impairment summary above. As a result of the recoverability test, management determined that the carrying value of certain long-lived assets associated with Eureka/Hornet (specifically, Hornet Midstream customer-related intangible assets) were not recoverable. The Company estimated the fair value of the Hornet Midstream-related intangible assets and determined that the fair value was not in excess of the assets’ carrying value, which resulted in an impairment charge of approximately $36.4 million related to certain of such intangible assets within the Company's Gathering segment. The non-cash impairment charge is included in the impairments of long-lived assets line on the statements of consolidated comprehensive income.

During 2019, the Company reassessed its asset groupings for its regulated pipelines due to certain regulatory ratemaking policy changes affecting the regulated pipelines, changes in strategic focus and plans for segmentation of operations. Prior to the second quarter of 2019, the Company defined its regulated asset grouping to include the FERC-regulated transmission and storage assets, integrated with the low-pressure assets due to overlapping operations, a shared costs structure and similar ratemaking structures. During the second quarter of 2019, Equitrans L.P. reached a settlement related to its FERC Form 501-G report, which was focused solely on the Company’s FERC-regulated transmission and storage assets. Further, management increased its operational focus and emphasis on high-pressure gathering assets as illustrated by the consummation of the Bolt-on Acquisition. As a result of these regulatory changes and shift in operational focus, beginning with the second quarter of 2019, the Company grouped its FERC-regulated assets in two asset groupings: FERC-regulated transmission and storage assets and FERC-regulated low-pressure gathering assets. Upon the change in asset grouping, management evaluated whether any indicators of impairment were present and, in conjunction with the evaluation, the Company determined that the carrying values for the non-core FERC-regulated low-pressure gathering assets exceeded their undiscounted cash flows. Additionally, following the settlement related to the FERC Form 501-G report, management did not, and currently does not, plan to seek to recover the deficient cash flows through a future rate proceeding. The Company therefore estimated the fair values of FERC-regulated low-pressure gathering assets and determined that their fair values were not in excess of the assets’ carrying values, which resulted in recognized impairments of property and equipment of approximately $80.1 million during the second quarter of 2019 related to the assets within the Company's Gathering segment. As a result of the impairment, the assets carry no book value. The non-cash impairment charge is included in the impairments of long-lived assets line on the statements of consolidated comprehensive income.

The Company is also required to evaluate its equity method investments, including investments in the MVP Joint Venture, to determine whether they are impaired under ASC 323, Investments - Equity Method and Joint Ventures. The standard for determining whether an impairment must be recorded under ASC 323 is whether there occurred an other-than-temporary decline in value. The evaluation and measurement of impairments under ASC 323 involves the same uncertainties as described above for long-lived assets that the Company owns directly and accounts for in accordance with ASC 360. The estimates that the Company makes with respect to its equity method investments are based upon assumptions that management believes are reasonable, and the impact of variations in these estimates or the underlying assumptions could be material. Additionally, if the projects in which the Company holds these investments recognize an impairment under ASC 360, the Company would record its proportionate share of that impairment loss and would evaluate its investment for an other-than-temporary decline in value under ASC 323. The Company evaluated its equity method investments, including investments in the MVP Joint Venture, as of September 30, 2020 and determined that there was not an other-than-temporary decline in value.

There is risk that the carrying value of the Company's investments in the MVP Joint Venture may be impaired in the future. There are ongoing legal and regulatory matters that must be resolved favorably before the MVP and MVP Southgate projects

can be completed. Assumptions and estimates utilized to test the Company’s investments in the MVP Joint Venture for impairment may change if adverse or delayed resolutions to these matters were to occur, which could have a material effect on the fair value of the Company's investments in the MVP Joint Venture.

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Financial Information by Business Segment

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Financial Information by Business Segment

Financial Information by Business Segment

The Company reports its operations in three segments that reflect its three lines of business: Gathering, Transmission and Water. Gathering includes predominantly dry gas gathering systems of high-pressure gathering lines and FERC-regulated low-pressure gathering lines; Transmission includes FERC-regulated interstate pipelines and storage systems; and Water consists of the Company's water pipelines, impoundment facilities, pumping stations, take point facilities and measurement facilities.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Revenues from customers:
Gathering	$	232,651	$	299,491	$	764,229	$	847,038
Transmission	93,329		87,299		288,869		289,926
Water	24,020		21,644		90,605		67,419
Total operating revenues	$	350,000	$	408,434	$	1,143,703	$	1,204,383
Operating income (loss):
Gathering (a)	$	129,186	$	(98,489)	$	400,647	$	177,720
Transmission	63,460		59,690		201,714		207,684
Water	10,118		7,722		40,173		18,980
Headquarters (b)	(2,255)		(7,376)		(24,646)		(16,621)
Total operating income (loss)	$	200,509	$	(38,453)	$	617,888	$	387,763
Reconciliation of operating income (loss) to net income (loss):
Equity income (c)	$	60,917	$	44,448	$	171,233	$	112,293
Other income	21,864		70		39,006		2,637
Loss on early extinguishment of debt	—		—		24,864		—
Net interest expense	86,411		65,606		219,960		188,268
Income tax expense	28,440		1,948		81,846		45,868
Net income (loss)	$	168,439	$	(61,489)	$	501,457	$	268,557

(a)Impairments of long-lived assets of $298.7 million for the three months ended September 30, 2019 and $55.6 million and $378.8 million for the nine months ended September 30, 2020 and 2019, respectively, were included in Gathering operating income (loss). See Note 4 for further information.

(b)Includes separation and other transaction costs and other unallocated corporate expenses.

(c)Equity income is included in the Transmission segment.

	September 30, 2020		December 31, 2019
	(Thousands)
Segment assets:
Gathering	$	7,743,615	$	7,572,911
Transmission (a)	4,279,330		3,903,707
Water	208,899		202,440
Total operating segments	12,231,844		11,679,058
Headquarters, including cash	398,836		362,651
Total assets	$	12,630,680	$	12,041,709

(a)The equity investments in the MVP Joint Venture are included in the Transmission segment.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Depreciation:
Gathering	$	44,648	$	38,943	$	126,915	$	104,502
Transmission	13,659		13,347		40,787		38,474
Water	8,105		6,907		22,720		19,801
Headquarters	360		263		849		3,953
Total	$	66,772	$	59,460	$	191,271	$	166,730
Capital expenditures for segment assets:
Gathering (a)	$	90,452	$	271,860	$	303,063	$	686,178
Transmission (b)	6,721		16,296		32,983		46,287
Water	2,530		13,466		8,377		31,490
Headquarters	447		1,068		3,234		6,787
Total (c)	$	100,150	$	302,690	$	347,657	$	770,742

(a)Includes approximately $13.5 million and $37.1 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2020, respectively, and includes approximately $6.7 million and $17.6 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2019, respectively.

(b)Transmission capital expenditures do not include capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of $65.6 million and $211.7 million for the three months ended September 30, 2020 and 2019, respectively, and $144.3 million and $512.9 million for the nine months ended September 30, 2020 and 2019, respectively.

(c)The Company accrues capital expenditures when the work has been completed but the associated bills have not yet been paid. Accrued capital expenditures are excluded from the statements of consolidated cash flows until they are paid. The net impact of non-cash capital expenditures, including the effect of accrued capital expenditures, assumed capital expenditures associated with the Bolt-on Acquisition, transfers from inventory as assets are assigned to a project and capitalized share-based compensation costs, was $8.3 million and $(15.3) million for the three months ended September 30, 2020 and 2019, respectively, and $29.9 million and $(0.8) million for the nine months ended September 30, 2020 and 2019, respectively.

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Revenue from Contracts with Customers

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customers

Revenue from Contracts with Customers

For the three and nine months ended September 30, 2020 and 2019, all revenues recognized on the Company's statements of consolidated comprehensive income are from contracts with customers. As of September 30, 2020 and December 31, 2019, all receivables recorded on the Company's consolidated balance sheets represent performance obligations that have been satisfied and for which an unconditional right to consideration exists.

Summary of Disaggregated Revenues. The tables below provide disaggregated revenue information by business segment.

	Three Months Ended September 30, 2020
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	145,533	$	84,612	$	9,005	$	239,150
Volumetric-based fee revenues	87,118		8,717		15,015		110,850
Total operating revenues	$	232,651	$	93,329	$	24,020	$	350,000
	Three Months Ended September 30, 2019
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues	$	154,791	$	81,990	$	840	$	237,621
Volumetric-based fee revenues	144,700		5,309		20,804		170,813
Total operating revenues	$	299,491	$	87,299	$	21,644	$	408,434

	Nine Months Ended September 30, 2020
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	446,721	$	267,973	$	32,788	$	747,482
Volumetric-based fee revenues	317,508		20,896		57,817		396,221
Total operating revenues	$	764,229	$	288,869	$	90,605	$	1,143,703
	Nine Months Ended September 30, 2019
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues	$	431,520	$	263,051	$	4,531	$	699,102
Volumetric-based fee revenues	415,518		26,875		62,888		505,281
Total operating revenues	$	847,038	$	289,926	$	67,419	$	1,204,383

(a)    For the three months ended September 30, 2020, firm reservation fee revenues associated with Gathering and Water included approximately $2.6 million and $1.9 million, respectively, of MVC unbilled revenues. For the nine months ended September 30, 2020, firm reservation fee revenues associated with Gathering and Water included approximately $13.7 million and $11.4 million, respectively, of MVC unbilled revenues. There were no MVC unbilled revenues associated with Gathering and Water during the three and nine months ended September 30, 2019.

Contract Assets. The Company recognizes contract assets in instances where billing occurs subsequent to revenue recognition and the Company's right to invoice the customer is conditioned on something other than the passage of time. The Company's contract assets primarily consist of revenue recognized under contracts containing MVCs whereby management has concluded (i) it is probable there will be a MVC deficiency payment at the end of the then-current MVC period, which is typically the period beginning at the inception of such contracts through the successive twelve month periods after that date, and (ii) that a significant reversal of revenue recognized currently for the future MVC deficiency payment will not occur. As a result, the Company's contract assets related to the Company's future MVC deficiency payments are generally expected to be collected within the next twelve months and are included in other current assets in the Company's consolidated balance sheets until such time as the MVC deficiency payments are invoiced to the customer.

The following table presents changes in the Company's unbilled revenue balance during the nine months ended September 30, 2020:

	Unbilled Revenue
	(Thousands)
Balance as of January 1, 2020	$	—
Revenue recognized in excess of amounts invoiced (a)	25,086
Minimum volume commitments invoiced (b)	—
Balance as of September 30, 2020	$	25,086

(a)Revenues associated with unbilled MVCs are included in firm reservation fee revenues within the Gathering and Water segments, as described in the Summary of Disaggregated Revenues table above.

(b)Unbilled revenues are transferred to accounts receivable once the Company has an unconditional right to consideration from the customer.

Contract Liabilities. As of September 30, 2020, the Company's contract liabilities consist of deferred revenue associated with the EQT Global GGA, including advance payments from EQT associated with the Rate Relief Shares (as defined below) acquired by the Company as consideration for certain commercial terms and the initial fair value of the Henry Hub cash bonus payment provision (as defined below). The contract liabilities are classified as current or non-current according to when such amounts are expected to be recognized. As of September 30, 2020, the contract liabilities are classified as non-current as none of the deferred revenue is expected to be recognized in revenue during the next five years.

Contracts requiring advance payments and the recognition of contract liabilities are evaluated to determine whether the advance payments provide the Company with a significant financing benefit. This determination requires significant judgment and is based on the combined effect of the expected length of time between when the Company transfers the promised good or service to the customer and when the customer pays for those goods or services and the prevailing interest rates. The Company has assessed the EQT Global GGA and determined that this agreement does not contain a significant financing component.

The following table presents changes in the Company's deferred revenue balances during the nine months ended September 30, 2020:

	Deferred Revenue
	(Thousands)
Balance as of January 1, 2020	$	—
Amounts recorded during the period (a)	321,775
Amounts transferred during the period (b)	—
Balance as of September 30, 2020	$	321,775

(a)Includes deferred billed revenue of approximately $74.6 million and $148.8 million recorded during the three and nine months ended September 30, 2020, respectively, associated with the EQT Global GGA.

(b)Deferred revenues are recognized as revenue upon satisfaction of the Company's performance obligation to the customer.

Summary of Remaining Performance Obligations. The following table summarizes the estimated transaction price allocated to the Company's remaining performance obligations under all contracts with firm reservation fees and MVCs as of September 30, 2020 that the Company will invoice or transfer from contract liabilities and recognize in future periods.

		2020(a)		2021		2022		2023		2024		Thereafter		Total
	(Thousands)
Gathering firm reservation fees		$	22,081	$	106,127	$	158,721	$	158,628	$	157,127	$	1,433,923	$	2,036,607
Gathering revenues supported by MVCs		125,591		526,413		585,384		617,532		635,649		5,367,726		7,858,295
Transmission firm reservation fees		94,112		360,242		380,890		342,566		282,962		2,609,294		4,070,066
Water revenues supported by MVCs		9,006		16,521		60,000		60,000		60,000		105,000		310,527
Total (b)		$	250,790	$	1,009,303	$	1,184,995	$	1,178,726	$	1,135,738	$	9,515,943	$	14,275,495

(a)    October 1, 2020 through December 31, 2020.

(b)    Includes assumptions regarding timing for placing certain projects, including the MVP, in-service. Delays in the in-service dates for projects may substantially alter the remaining performance obligations for certain contracts with firm reservation fees and/or MVCs.

Based on total projected contractual revenues, including projected contractual revenues from future capacity expected from expansion projects that are not yet fully constructed for which the Company has executed firm contracts, the Company's firm gathering contracts and firm transmission and storage contracts had weighted average remaining terms of approximately 15 years and 14 years, respectively, as of September 30, 2020.

EQT Global GGA. On the EQT Global GGA Effective Date, the Company (through EQM) entered into the EQT Global GGA with EQT for the provision by the Company of certain gas gathering services to EQT in the Marcellus and Utica Shales of Pennsylvania and West Virginia. Pursuant to the EQT Global GGA, EQT is subject to an initial annual MVC of 3.0 Bcf per day that gradually steps up to 4.0 Bcf per day for several years following the in-service date of the MVP. The EQT Global GGA runs from the EQT Global GGA Effective Date through December 31, 2035, and will renew annually thereafter unless terminated by EQT or the Company pursuant to its terms. Pursuant to the EQT Global GGA, the Company has certain obligations to build connections to connect EQT wells to its gathering system, which are subject to geographical limitations in relation to the dedicated area in Pennsylvania and West Virginia, as well as the distance of such connections to the Company's then-existing gathering system. Management has estimated the total consideration expected to be received over the life of the EQT Global GGA, including gathering MVC revenue with a declining rate structure, the fair value of the Rate Relief Shares and the initial fair value of the Henry Hub cash bonus payment provision. The total consideration is allocated proportionally to the performance obligation under the contract, which is to provide daily MVC capacity over the life of the contract, in order to recognize revenue in accordance with ASC 606, Revenue from Contracts with Customers. The performance obligations will be satisfied during the life of the contract based on a units of production methodology for the daily MVC capacity provided to EQT. Due to the declining rate structure, there will be periods during which the billable gathering MVC revenue will exceed the allocated consideration to the performance obligation, which will result in billable gathering MVC revenue being deferred to the contract liability. The deferred consideration amounts are deferred until recognized in revenue when the associated performance obligation has been satisfied and are classified as current or non-current according to when such amounts are expected to be recognized. In addition to the estimated total consideration allocated to the daily MVC, the EQT Global GGA includes other fees based on variable or volumetric-based services that will be recognized in the period the services are provided.

The EQT Global GGA provides for potential cash bonus payments payable by EQT to the Company during the period beginning on the first day of the calendar quarter in which the MVP in-service date occurs through the earlier of the twelfth calendar quarter from that point or the calendar quarter ending December 31, 2024 (the Henry Hub cash bonus payment provision). The potential cash bonus payments are conditioned upon the quarterly average of certain Henry Hub natural gas prices exceeding certain price thresholds. The Henry Hub cash bonus payment provision meets the definition of an embedded derivative that should be bifurcated from the host contract and accounted for separately in accordance with ASC 815, Derivatives and Hedging. The embedded derivative was recorded as a derivative asset at its estimated fair value at inception of approximately $51.5 million and as part of the contract liability to be included in the total consideration to be allocated to the performance obligation under ASC 606. Subsequent changes to the fair value of the derivative instrument through the end of the contract are recognized in other income on the Company's statements of consolidated comprehensive income.

The gathering MVC fees payable by EQT (or its affiliates) to the Company set forth in the EQT Global GGA are subject to potential reductions for certain contract years as set forth in the EQT Global GGA, conditioned upon the in-service date of the MVP, which provide for estimated aggregate fee relief of approximately $270 million in the first year after the in-service date of the MVP, approximately $230 million in the second year after the in-service date of the MVP and approximately $35 million in the third year after the in-service date of the MVP. In addition, if the MVP in-service date has not occurred by January 1, 2022, EQT has an option, exercisable for a period of twelve months (or such shorter period if the in-service date of the MVP occurs), to forgo approximately $145 million of the gathering fee relief in the first year after the MVP in-service date and approximately $90 million of the gathering fee relief in the second year after the MVP in-service date in exchange for a cash payment from the Company (through EQM) to EQT in the amount of approximately $196 million (the EQT Cash Option). As consideration for the additional rate relief subject to the EQT Cash Option, the Company purchased shares of its common stock (see Rate Relief Shares discussed and defined below) from EQT. The consideration received for future contractual rate relief associated with the Rate Relief Shares was recorded at a fair value of approximately $121.5 million as a contract liability in accordance with ASC 606 and will be recognized as revenue over the life of the contract.

Water Services Letter Agreement. On February 26, 2020, the Company (through EQM) entered into a letter agreement with EQT, pursuant to which EQT agreed to utilize the Company for the provision of water services in Pennsylvania under existing water services agreements and new water services agreements if negotiated between the parties (such letter agreement, the Water Services Letter Agreement). The Water Services Letter Agreement is effective as of the first day of the first month following the MVP in-service date and shall expire on the fifth anniversary of such date. During each year of the Water Services Letter Agreement, EQT agreed that fixed MVC fees payable to the Company for water services incurred on a volumetric basis, provided in accordance with existing agreements and new agreements entered into between the parties pursuant to the Water Services Letter Agreement (or the related agreements), shall be equal to or greater than $60 million per year.

Share Purchase Agreements. On February 26, 2020, the Company entered into two share purchase agreements (the Share Purchase Agreements) with EQT, pursuant to which the Company agreed to (i) purchase 4,769,496 shares of Equitrans Midstream common stock (the Cash Shares) from EQT in exchange for approximately $46 million in cash, (ii) purchase 20,530,256 shares of Equitrans Midstream common stock (the Rate Relief Shares and, together with the Cash Shares, the Share Purchases) from EQT in exchange for a promissory note in the aggregate principal amount of approximately $196 million (which EQT subsequently assigned to EQM as consideration for certain commercial terms under the EQT Global GGA), and (iii) pay EQT cash in the amount of approximately $7 million (the Cash Amount). On March 5, 2020, the Company completed the Share Purchases and paid the Cash Amount. The Company used proceeds from the EQM Credit Facility (defined in Note 9) to fund the purchase of the Cash Shares and to pay the Cash Amount in addition to other uses of proceeds. After the closing of the Share Purchases, the Company retired the Cash Shares and the Rate Relief Shares. Additionally, the Company recorded a $17.2 million deferred tax liability in conjunction with the Rate Relief Shares. On September 29, 2020, the Company made a prepayment to EQM of all principal, interest, fees and other obligations outstanding under the promissory note EQT assigned to EQM and the promissory note was terminated.

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Related Party Transactions

9 Months Ended

Sep. 30, 2020

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

Related Party Transactions with EQT

As of September 30, 2020, EQT remained a related party of the Company due to its ownership of 25,296,026 shares of Equitrans Midstream common stock, which represented an approximately 5.9% ownership interest in the Company, excluding the impact of the Equitrans Midstream Preferred Shares. In the ordinary course of business, the Company engaged, and continues to engage, as applicable, in transactions with EQT and its affiliates, including, but not limited to, gathering agreements, transportation service and precedent agreements, storage agreements and water services agreements.

Operating revenues included related party revenues from EQT of approximately $222.7 million and $275.4 million for the three months ended September 30, 2020 and 2019, respectively, and $741.2 million and $843.9 million for the nine months ended September 30, 2020 and 2019, respectively. Operating and maintenance expense included charges to EQT of approximately $2.4 million for both the three and nine months ended September 30, 2019. Selling, general and administrative expense included charges from EQT of approximately $1.0 million for both the three and nine months ended September 30, 2019. Additionally, net interest expense included interest income on the Preferred Interest in EES of approximately $1.5 million and $1.6 million for the three months ended September 30, 2020 and 2019, respectively, and $4.6 million and $4.8 million for the nine months ended September 30, 2020 and 2019, respectively.

Accounts receivable as of September 30, 2020 and December 31, 2019 included approximately $194.3 million and $175.2 million, respectively, of related party accounts receivable from EQT. Other current assets as of September 30, 2020 included approximately $11.4 million of MVC unbilled revenue from EQT. In addition, as of September 30, 2020, the Preferred Interest in EES was approximately $106.3 million, of which $5.2 million was recorded in other current assets and $101.1 million was recorded in other assets on the Company's consolidated balance sheets. As of December 31, 2019, the Preferred Interest in EES was approximately $110.1 million, of which $5.0 million was recorded in other current assets and $105.1 million was recorded in other assets on the Company's consolidated balance sheets.

Tax Matters Agreement. On November 12, 2018, in connection with the Separation and Distribution, the Company and EQT entered into a tax matters agreement that governs the parties' respective rights, responsibilities and obligations with respect to taxes (including taxes arising in the ordinary course of business and taxes, if any, incurred as a result of any failure of the Distribution and certain related transactions to qualify as generally tax-free for U.S. federal income tax purposes), tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings and assistance and cooperation with respect to tax matters (the Tax Matters Agreement). In addition, the Tax Matters Agreement imposes certain restrictions on the Company and its subsidiaries, including restrictions on certain equity issuances, business combinations, sales of assets and similar transactions, that are designed to preserve the tax-free status of the Distribution and certain related transactions.

The Tax Matters Agreement provides special rules that allocate tax liabilities in the event that the Distribution, together with certain related transactions, is not tax-free. In general, under the Tax Matters Agreement, each party is expected to be responsible for any taxes, whether imposed on the Company or EQT, that arise (i) from the failure of the Distribution, together with certain related transactions, to qualify for tax-free treatment, or (ii) if certain related transactions were to fail to qualify for their intended tax treatment, in each case, to the extent that the failure to qualify is attributable to actions, events or transactions relating to such party's respective stock, assets or business or a breach of the relevant representations or covenants made by that party in the Tax Matters Agreement.

Credit Letter Agreement. On February 26, 2020, in connection with the execution of the EQT Global GGA, the Company (through EQM) and EQT entered into a letter agreement (the Credit Letter Agreement) pursuant to which, among other things, (a) the Company agreed to relieve certain credit posting requirements for EQT, in an amount up to approximately $250 million, under its commercial agreements with the Company, subject to EQT maintaining a minimum credit rating from two of three rating agencies of (i) Ba3 with Moody’s Investors Service (Moody's), (ii) BB- with S&P Global Ratings (S&P) and (iii) BB- with Fitch Investor Services (Fitch) and (b) the Company agreed to use commercially reasonable good faith efforts to negotiate similar credit support arrangements for EQT in respect of its commitments to the MVP Joint Venture.

EQT Global GGA. See Notes 4 and 6 for further detail.

Water Services Letter Agreement. See Note 6 for further detail.

Share Purchase Agreements. See Note 6 for further detail.

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Investments in Unconsolidated Entity

9 Months Ended

Sep. 30, 2020

Equity Method Investments and Joint Ventures [Abstract]

Investments in Unconsolidated Entity

Investments in Unconsolidated EntityThe MVP Joint Venture is constructing the MVP, an estimated 300-mile natural gas interstate pipeline that will span from northern West Virginia to southern Virginia. The Company will operate the MVP and owned a 45.9% interest in the MVP project as of September 30, 2020. On November 4, 2019, Con Edison exercised an option to cap its investment in the MVP project at approximately $530 million (excluding AFUDC). The Company and NextEra Energy, Inc. are obligated to, and RGC Resources, Inc., another member of the MVP Joint Venture owning an interest in the MVP project, has opted to, fund the shortfall in Con Edison's capital contributions, on a pro rata basis. Such funding by the Company and funding by other members has and will correspondingly increase the Company's and such other funding members' respective interests in the MVP project and decrease Con Edison's interest in the MVP project. As a result, based on the midpoint of the project's $5.8 billion to $6.0 billion (excluding AFUDC) targeted cost, the Company's equity ownership in the MVP project will progressively increase from approximately 45.9% to approximately 47.6%. The MVP Joint Venture is a variable interest entity because it has insufficient equity to finance its activities during the construction stage of the project. The Company is not the primary

beneficiary of the MVP Joint Venture because the Company does not have the power to direct the activities that most significantly affect the MVP Joint Venture's economic performance. Certain business decisions, such as decisions to make distributions of cash, require a greater than 66 2/3% ownership interest approval, and no one member owns more than a 66 2/3% interest.

In April 2018, the MVP Joint Venture announced the MVP Southgate project, a proposed 75-mile interstate pipeline that will extend from the MVP at Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina. The Company will operate the MVP Southgate pipeline and owned a 47.2% interest in the MVP Southgate project as of September 30, 2020.

In September 2020, the MVP Joint Venture issued a capital call notice for the funding of the MVP project to MVP Holdco, LLC (MVP Holdco), a wholly owned subsidiary of the Company, for $126.6 million, of which $14.4 million and $112.2 million was paid in October 2020 and November 2020, respectively. In September 2020, the MVP Joint Venture issued a capital call notice for the funding of the MVP Southgate project to MVP Holdco for $0.7 million, which was paid in October 2020. In addition, in October 2020, the MVP Joint Venture issued a capital call notice for the funding of the MVP Southgate project to MVP Holdco for $0.3 million, which is expected to be paid in November 2020. The capital contributions payable and the corresponding increase to the investment balance are reflected on the consolidated balance sheet as of September 30, 2020.

The Company's interests in the MVP and MVP Southgate projects are equity method investments for accounting purposes because the Company has the ability to exercise significant influence, but not control, over the MVP Joint Venture's operating and financial policies. Accordingly, the Company records adjustments to the investment balance for contributions to or distributions from the MVP Joint Venture and for the Company's pro-rata share of MVP Joint Venture earnings.

Equity income, which is primarily related to the Company's pro-rata share of the MVP Joint Venture's AFUDC on the construction of the MVP, is reported in equity income in the Company's statements of consolidated comprehensive income.

Pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances, which may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral, in favor of the MVP Joint Venture to provide assurance as to the funding of MVP Holdco's proportionate share of the construction budget for the MVP project. In 2019, EQM issued performance guarantees in an amount equal to 33% of MVP Holdco's proportionate share of the then-remaining construction budget for the MVP project. As of December 31, 2019, EQM's performance guarantee was approximately $223 million, adjusted for capital contributions made by EQM during the fourth quarter of 2019.

In addition, pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances in respect of MVP Southgate, which performance assurances may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral. In 2019, EQM issued a performance guarantee of $14 million in favor of the MVP Joint Venture for the MVP Southgate project.

As a result of EQM’s credit rating downgrades in the first quarter of 2020, EQM delivered replacement credit support to the MVP Joint Venture in the form of letters of credit in the amounts of approximately $220.2 million and $14.2 million with respect to the MVP project and MVP Southgate project, respectively. In connection with delivering such letters of credit as replacement performance assurances, EQM's performance guarantees associated with the MVP and MVP Southgate projects were terminated. As of September 30, 2020, the letters of credit with respect to the MVP project and MVP Southgate project were in the amounts of approximately $220.2 million and $14.2 million, respectively. As of November 3, 2020, based on the midpoint of the targeted project cost, MVP Holdco's obligation to deliver a replacement letter of credit with respect to the MVP project was in the amount of approximately $231.2 million. Upon the FERC’s initial release to begin construction of the MVP Southgate project, the Company’s current letter of credit to support MVP Southgate will be terminated, and the Company will be obligated to deliver a new letter of credit (or provide another allowable form of performance assurance) in an amount equal to 33% of MVP Holdco’s proportionate share of the remaining capital obligations for the MVP Southgate project under the applicable construction budget.

As of September 30, 2020, the Company's maximum financial statement exposure related to the MVP Joint Venture was approximately $2,829 million, which consisted of the investment in unconsolidated entity balance on the consolidated balance sheet as of September 30, 2020, net of capital contributions payable, and the letters of credit outstanding under the Amended EQM Credit Facility. As of November 3, 2020, in conjunction with MVP Holdco's obligation to deliver a replacement letter of credit with respect to the MVP project, the Company's maximum financial statement exposure related to the MVP Joint Venture was approximately $2,967 million.

The following tables summarize the unaudited condensed consolidated financial statements of the MVP Joint Venture in relation to the MVP project.

Condensed Consolidated Balance Sheets

	September 30, 2020		December 31, 2019
	(Thousands)
Current assets	$	290,541	$	102,638
Non-current assets	5,540,846		4,951,521
Total assets	$	5,831,387	$	5,054,159
Current liabilities	$	187,826	$	223,645
Equity	5,643,561		4,830,514
Total liabilities and equity	$	5,831,387	$	5,054,159

Condensed Statements of Consolidated Operations

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Environmental remediation reserve	$	20	$	(516)	$	(295)	$	(2,682)
Other income	13		1,165		275		5,863
Net interest income	39,280		29,100		110,868		73,035
AFUDC — equity	91,653		67,902		258,693		170,416
Net income	$	130,966	$	97,651	$	369,541	$	246,632

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Debt

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Debt

Debt

Equitrans Midstream Term Loan Facility. In December 2018, Equitrans Midstream entered into a term loan credit agreement (as amended in May 2019, the ETRN Term Loan Credit Agreement) that provided for a senior secured term loan facility in an aggregate principal amount of $600 million (the ETRN Term Loans). The Company received net proceeds from the ETRN Term Loans of $568.1 million, inclusive of a discount of $18.0 million and estimated debt issuance costs of $13.9 million. The net proceeds were primarily used to fund the purchase of the public EQGP Common Units (the EQGP Buyout), including certain fees, costs and expenses in connection therewith, and the remainder was used for general corporate purposes. On March 3, 2020, EQM drew $650.0 million under the Amended EQM Credit Facility and transferred such funds to the Company, pursuant to a senior unsecured term loan agreement with the Company. The Company utilized a portion of such funds to pay off amounts outstanding under the ETRN Term Loans and the ETRN Term Loan Credit Agreement was terminated. As a result, the Company wrote off $24.4 million of unamortized discount and financing costs related to the ETRN Term Loan Credit Agreement. The write off charge is included in the loss on early extinguishment of debt line on the statements of consolidated comprehensive income. On September 29, 2020, the Company made a prepayment to EQM of all principal, interest, fees and other obligations outstanding under the senior unsecured term loan agreement and terminated the agreement. As of December 31, 2019, the current portion of the ETRN Term Loans was $6.0 million and was recorded in the current portion of long-term debt on the consolidated balance sheet. The Company had $594.0 million of borrowings outstanding and no letters of credit outstanding under the ETRN Term Loan Credit Agreement as of December 31, 2019. During the period from January 1, 2020 to March 3, 2020, the weighted average annual interest rate was approximately 6.2%. For the three and nine months ended September 30, 2019, the weighted average annual interest rates were approximately 6.8% and 6.9%, respectively.

Equitrans Midstream Credit Facility. In October 2018, Equitrans Midstream entered into a senior secured revolving credit facility agreement that provided for $100 million in borrowing capacity (the Equitrans Midstream Credit Facility). Equitrans Midstream amended the Equitrans Midstream Credit Facility on December 31, 2018 to, among other things, permit the incurrence of the borrowings under the ETRN Term Loan Credit Agreement. The Equitrans Midstream Credit Facility, which was available for general corporate purposes and to fund ongoing working capital requirements, was terminated on March 3, 2020 in conjunction with the Company's termination of the ETRN Term Loan Credit Agreement (see above). As a result, the Company wrote off $0.5 million of unamortized financing costs related to the Equitrans Midstream Credit Facility. The write off charge is included in the loss on early extinguishment of debt line on the statements of consolidated comprehensive income.

The Company had no borrowings and no letters of credit outstanding under the Equitrans Midstream Credit Facility as of December 31, 2019 and during the period from January 1, 2020 to March 3, 2020. There were no borrowings on the Equitrans Midstream Credit Facility during the three months ended September 30, 2019. For the nine months ended September 30, 2019, the maximum outstanding borrowings was approximately $44 million, the average daily balance was approximately $4 million and the weighted average annual interest rate was approximately 4.3%. Commitment fees paid to maintain credit availability under the credit facility were approximately $0.1 million for the period from January 1, 2020 to March 3, 2020, and approximately $0.1 million and $0.3 million for the three and nine months ended September 30, 2019, respectively.

Amended EQM Revolving Credit Facility and Amended 2019 EQM Term Loan Agreement. On October 31, 2018, EQM amended and restated its unsecured revolving credit facility to increase the borrowing capacity from $1 billion to $3 billion and extend the term to October 2023 (the EQM Credit Facility). In August 2019, EQM entered into a term loan agreement (the 2019 EQM Term Loan Agreement) that provided for unsecured term loans (the EQM Term Loans) in an aggregate principal amount of $1.4 billion.

Additionally, on March 30, 2020, EQM entered into (i) an amendment to the EQM Credit Facility (as amended, the Amended EQM Credit Facility) and (ii) an amendment to the 2019 EQM Term Loan Agreement (as amended, the Amended 2019 EQM Term Loan Agreement) which, among other things, amended certain defined terms and negative covenants in the EQM Credit Facility and the 2019 EQM Term Loan Agreement.

The Amended EQM Credit Facility is available for general partnership purposes, including to purchase assets, to fund working capital requirements and capital expenditures and to pay distributions. Subject to satisfaction of certain conditions, the Amended EQM Credit Facility has an accordion feature that allows EQM to increase the available borrowings under the facility by up to an additional $750 million. The Amended EQM Credit Facility has a sublimit of up to $250 million for same-day swing line advances and a sublimit of up to $400 million for letters of credit. In addition, EQM has the ability to request that one or more lenders make available term loans under the Amended EQM Credit Facility, subject to the satisfaction of certain conditions. As of September 30, 2020, no term loans were outstanding under the Amended EQM Credit Facility. Such term loans would be secured by cash, qualifying investment grade securities or a combination thereof.

Under the terms of the Amended EQM Credit Facility, EQM can obtain committed loans as Base Rate Loans (as defined in the Amended EQM Credit Facility) or Eurodollar Rate Loans (as defined in the Amended EQM Credit Facility). Base Rate Loans are denominated in dollars and bear interest at a base rate plus a margin of 0.125% to 1.750% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings by Moody’s, S&P and Fitch. Eurodollar Rate Loans bear interest at a Eurodollar Rate (as defined in the Amended EQM Credit Facility) plus a margin of 1.125% to 2.750% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings with Moody’s, S&P and Fitch. EQM may voluntarily prepay its borrowings under the Amended EQM Credit Facility, in whole or in part, without premium or penalty, but subject to reimbursement of funding losses with respect to certain prepayments of Eurodollar Rate Loans. Revolving amounts prepaid under the Amended EQM Credit Facility may be re-borrowed.

As of September 30, 2020, EQM had approximately $485 million of borrowings and $235 million of letters of credit outstanding under the Amended EQM Credit Facility. As of December 31, 2019, EQM had approximately $610 million of borrowings and $1 million of letters of credit outstanding under the Amended EQM Credit Facility. During the three and nine months ended September 30, 2020, the maximum outstanding borrowings at any time were approximately $485 million and $2,040 million, respectively, and the average daily balances were approximately $485 million and $975 million, respectively. EQM incurred interest at weighted average annual interest rates of approximately 2.6% and 2.9% for the three and nine months ended September 30, 2020, respectively. During the three and nine months ended September 30, 2019, the maximum outstanding borrowings at any time was approximately $1,690 million for both periods, the average daily balances were approximately $865 million and $950 million, respectively, and the weighted average annual interest rates were approximately 3.7% and 3.8%, respectively. For the three and nine months ended September 30, 2020, commitment fees of $2.4 million and $5.0 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility. For the three and nine months ended September 30, 2019, commitment fees of $1.2 million and $3.3 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility.

The EQM Term Loans mature in August 2022. EQM received net proceeds from the issuance of the EQM Term Loans of $1,397.4 million, inclusive of debt issuance costs of $2.6 million. The net proceeds were primarily used to repay borrowings under the Amended EQM Credit Facility and the remainder was used for general partnership purposes. The Amended 2019 EQM Term Loan Agreement provides EQM with the right to request incremental term loans in an aggregate amount of up to $300 million, subject to, among other things, obtaining additional commitments from existing lenders or commitments from new lenders. As of September 30, 2020 and December 31, 2019, EQM had $1.4 billion of borrowings outstanding under the Amended 2019 EQM Term Loan Agreement for both periods. During the three and nine months ended September 30, 2020, the weighted average annual interest rates for the periods were approximately 2.4% and 2.8%, respectively. During the applicable

portion of the two months ended September 30, 2019, the weighted average annual interest rate for the period was approximately 3.6%.

Under the terms of the Amended 2019 EQM Term Loan Agreement, EQM can obtain Base Rate Loans (as defined in the Amended 2019 EQM Term Loan Agreement) or Eurodollar Rate Loans (as defined in the Amended 2019 EQM Term Loan Agreement). Base Rate Loans are denominated in dollars and bear interest at a base rate plus a margin of 0.000% to 1.625% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings with Moody’s, S&P and Fitch. Eurodollar Rate Loans bear interest at a Eurodollar Rate (as defined in the Amended 2019 EQM Term Loan Agreement) plus a margin of 1.000% to 2.625% determined on the basis of a combination of EQM’s then-current debt issuer credit ratings with Moody’s, S&P and Fitch. EQM may voluntarily prepay its borrowings under the Amended 2019 EQM Term Loan Agreement, in whole or in part, without premium or penalty, but subject to reimbursement of funding losses with respect to certain prepayments of Eurodollar Rate Loans. Amounts prepaid under the Amended 2019 EQM Term Loan Agreement may not be reborrowed.

The Amended EQM Credit Facility and the Amended 2019 EQM Term Loan Agreement each contain certain negative covenants, that, among other things, limit the ability of EQM and certain of its subsidiaries to incur or permit liens on assets, establish a maximum consolidated leverage ratio that varies over the course of the term ranging from not more than 5.75 to 1.00 to not more than 5.00 to 1.00 tested as of the end of each fiscal quarter (which in limited circumstances is increased for certain measurement periods following the consummation of certain acquisitions), limit transactions with affiliates, mergers and other fundamental changes, asset dispositions, the incurrence of new debt and entry into burdensome agreements, in each case and as applicable, subject to certain specified exceptions. The Amended EQM Credit Facility and the Amended 2019 EQM Term Loan Agreement each also contains certain specified events of default, including, among others, failure to make certain payments (subject to specified grace periods in some cases), failure to observe covenants (subject to specified grace periods in some cases), cross-defaults to certain other material debt, certain specified insolvency or bankruptcy events and the occurrence of a change of control event, in each case, the occurrence of which would allow the lenders to accelerate EQM’s payment obligations under the Amended EQM Credit Facility or the Amended 2019 EQM Term Loan Agreement, as applicable.

Eureka Credit Facility. Eureka Midstream, LLC (Eureka), a wholly owned subsidiary of Eureka Midstream, has a $400 million senior secured revolving credit facility that is available for general business purposes, including financing maintenance and expansion capital expenditures related to the Eureka system and providing working capital for Eureka’s operations (as amended, the Eureka Credit Facility). The Eureka Credit Facility matures on August 25, 2021. Subject to satisfaction of certain conditions, the Eureka Credit Facility has an accordion feature that allows Eureka to increase the available borrowings under the facility to an amount no greater than $500 million.

As of September 30, 2020 and December 31, 2019, Eureka had approximately $303 million and $293 million, respectively, of borrowings outstanding under the Eureka Credit Facility. For the three and nine months ended September 30, 2020, the maximum amount of outstanding borrowings under the Eureka Credit Facility at any time was approximately $323 million for both periods, the average daily balances were approximately $310 million and $300 million, respectively, and Eureka incurred interest at weighted average annual interest rates of approximately 2.4% and 2.6%, respectively. For the three months ended September 30, 2019 and for the period from April 10, 2019 through September 30, 2019, the maximum amount of outstanding borrowings under the Eureka Credit Facility at any time was approximately $293 million for both periods, the average daily balances were approximately $293 million and $285 million, respectively, and Eureka incurred interest at a weighted average annual interest rate of approximately 4.3% for both periods. For the three and nine months ended September 30, 2020, commitment fees of $0.1 million and $0.4 million, respectively, were paid to maintain credit availability under the Eureka Credit Facility. For the three months ended September 30, 2019 and for the period from April 10, 2019 through September 30, 2019, commitment fees of $0.1 million and $0.2 million, respectively, were paid to maintain credit availability under the Eureka Credit Facility.

2020 Senior Notes. During the second quarter of 2020, EQM issued $700 million aggregate principal amount of new 6.000% senior unsecured notes due July 1, 2025 and $900 million aggregate principal amount of new 6.500% senior unsecured notes due July 1, 2027 (collectively, the 2020 Senior Notes) and received net proceeds from the offering of approximately $1,576.1 million, inclusive of a discount of $20.0 million and debt issuance costs of $3.9 million. The net proceeds were used to repay a portion of the borrowings outstanding under the Amended EQM Credit Facility, and the remainder was used for general partnership purposes.

The 2020 Senior Notes were issued under and are governed by an indenture, dated June 18, 2020 (the 2020 Indenture), between EQM and the Bank of New York Mellon Trust Company, N.A., as trustee. The 2020 Indenture contains covenants that limit EQM's ability to, among other things, incur certain liens securing indebtedness, engage in certain sale and leaseback transactions, and enter into certain consolidations, mergers, conveyances, transfers or leases of all or substantially all of EQM's assets. Upon the occurrence of a Change of Control Triggering Event (as defined in the 2020 Indenture), EQM may be required

to offer to purchase the 2020 Senior Notes at a purchase price equal to 101% of the aggregate principal amount of the 2020 Senior Notes repurchased, plus accrued and unpaid interest, if any, to, but excluding, the repurchase date.

The 2020 Senior Notes are unsecured and rank equally with all of EQM’s existing and future senior obligations. The 2020 Senior Notes are senior in right of payment to any of EQM’s future obligations that are, by their terms, expressly subordinated in right of payment to the 2020 Senior Notes. The 2020 Senior Notes are effectively subordinated to EQM’s secured obligations, if any, to the extent of the value of the collateral securing such obligations, and structurally subordinated to all indebtedness and obligations, including trade payables, of EQM’s subsidiaries, other than any subsidiaries that may guarantee the 2020 Senior Notes in the future.

As of September 30, 2020, EQM and Eureka were in compliance with all debt provisions and covenants.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Assets Measured at Fair Value on a Recurring Basis. The Company records derivative instruments at fair value on a gross basis in its consolidated balance sheets. The Henry Hub cash bonus payment provision, as described in Note 6, is recorded at its estimated fair value using a Monte Carlo simulation model. Significant inputs used in the fair value measurement include NYMEX Henry Hub natural gas futures prices as of the date of valuation, risk-free interest rates based on U.S. Treasury rates, expected volatility of NYMEX Henry Hub natural gas futures prices and an estimated credit spread of EQT. The expected volatility of NYMEX Henry Hub natural gas futures prices used in the valuation methodology represents a significant unobservable input causing the Henry Hub cash bonus payment provision to be designated as a Level 3 fair value measurement. As of September 30, 2020, the fair value of the Henry Hub cash bonus payment provision was $89.2 million, of which $35.3 million was recorded in other current assets and $53.9 million was recorded in other assets on the Company's consolidated balance sheets. During the three and nine months ended September 30, 2020, the Company recognized gains of $21.0 million and $37.7 million, respectively, representing the change in estimated fair value of the derivative instrument during the applicable period. The gain is reflected in other income in the Company's statements of consolidated comprehensive income.

Other Financial Instruments. The carrying values of cash and cash equivalents, accounts receivable, amounts due to/from related parties and accounts payable approximate fair value due to the short maturity of the instruments; as such, their fair values are Level 1 fair value measurements. The carrying values of borrowings under the Amended EQM Credit Facility, the Eureka Credit Facility and the Amended 2019 EQM Term Loan Agreement approximate fair value as the interest rates are based on prevailing market rates; these are considered Level 1 fair value measurements. As EQM's borrowings under its senior notes are not actively traded, their fair values are estimated using an income approach model that applies a discount rate based on prevailing market rates for debt with similar remaining time-to-maturity and credit risk; as such, their fair values are Level 2 fair value measurements. Effective on March 3, 2020, the ETRN Term Loans were paid off with proceeds from the Amended EQM Credit Facility (see Note 9), and the ETRN Term Loan Credit Agreement was terminated. As of December 31, 2019, the estimated fair value of the ETRN Term Loans was approximately $595 million and the carrying value of the ETRN Term Loans was approximately $568 million. As of September 30, 2020 and December 31, 2019, the estimated fair values of EQM's senior notes were approximately $5,139 million and $3,421 million, respectively, and the carrying values of EQM's senior notes were approximately $5,043 million and $3,462 million, respectively. The fair value of the Preferred Interest is a Level 3 fair value measurement and is estimated using an income approach model that applies a market-based discount rate. As of September 30, 2020 and December 31, 2019, the estimated fair values of the Preferred Interest were approximately $127 million and $126 million, respectively, and the carrying values of the Preferred Interest were approximately $106 million and $110 million, respectively.

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Earnings (Loss) Per Share

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

Earnings (Loss) Per ShareThe following tables set forth the computation of the basic and diluted earnings (loss) per share attributable to Equitrans Midstream common shareholders for the three and nine months ended September 30, 2020 and 2019:

	Three Months Ended September 30,
	2020				2019
	Basic		Diluted		Basic		Diluted
	(In thousands, except per share data)
Net income (loss)	$	168,439	$	168,439	$	(61,489)	$	(61,489)
Less: Net income (loss) attributable to noncontrolling interests (excluding EQM Series A Preferred Units)	3,973		3,973		(44,144)		(44,144)
Less: EQM Series A Preferred Units interest in net income	—		—		48,480		48,480
Less: Preferred dividends	14,628		14,628		—		—
Net income (loss) attributable to Equitrans Midstream common shareholders	$	149,838	$	149,838	$	(65,825)	$	(65,825)
Basic weighted average common shares outstanding	432,773		432,773		254,915		254,915
Dilutive securities (a)(b)	—		48		—		—
Diluted weighted average common shares outstanding	432,773		432,821		254,915		254,915
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders	$	0.35	$	0.35	$	(0.26)	$	(0.26)

	Nine Months Ended September 30,
	2020				2019
	Basic		Diluted		Basic		Diluted
	(In thousands, except per share data)
Net income	$	501,457	$	501,457	$	268,557	$	268,557
Less: Net income attributable to noncontrolling interests (excluding EQM Series A Preferred Units)	163,406		163,406		155,082		155,082
Less: EQM Series A Preferred Units interest in net income	47,359		47,359		48,480		48,480
Less: Preferred dividends	44,132		44,132		—		—
Net income attributable to Equitrans Midstream common shareholders	$	246,560	$	246,560	$	64,995	$	64,995
Basic weighted average common shares outstanding	314,411		314,411		254,868		254,868
Dilutive securities (a)(b)	—		—		—		19
Diluted weighted average common shares outstanding	314,411		314,411		254,868		254,887
Earnings per share of common stock attributable to Equitrans Midstream common shareholders	$	0.78	$	0.78	$	0.26	$	0.25

(a)For the periods presented, as applicable, EQM's dilutive securities issued and outstanding prior to the EQM Merger did not have a material impact on the Company's diluted earnings per share.

(b)For the three and nine months ended September 30, 2020, the Company excluded 30,099 and 11,995 (in thousands), respectively, of weighted average anti-dilutive securities related to the Equitrans Midstream Preferred Shares and stock-based compensation awards. For the three months ended September 30, 2019, the Company excluded 45 (in thousands) of weighted average anti-dilutive securities related to stock-based compensation awards.

Preferred dividends include a $27.3 million premium recognized on the redemption of the EQM Series A Preferred Units as part of the Restructuring Closing during the nine months ended September 30, 2020.

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Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe Company's effective tax rate was 14.4% for the three months ended September 30, 2020, compared to (3.3)% for the three months ended September 30, 2019. The Company's effective tax rate was 14.0% for the nine months ended September 30, 2020, compared to 14.6% for the nine months ended September 30, 2019. The effective tax rate was higher for the three months ended September 30, 2020 compared to the three months ended September 30, 2019 primarily due to the tax impact of the impairments of long-lived assets (see Note 4) during the three months ended September 30, 2019 and, for the three months ended September 30, 2020, the decrease in net income attributable to noncontrolling interests as a result of the EQM Merger and related effect on the Company's estimated annual effective tax rate, partially offset by an increase in AFUDC - equity. Excluding other items, the effective tax rates for the three and nine months ended September 30, 2020 and 2019 were lower than the statutory rates because the Company does not record income tax expense on the portion of its income attributable to the noncontrolling member of Eureka Midstream and did not record income tax expense on the portion of its income attributable to the noncontrolling limited partners of EQM and EQGP for the periods prior to the closing of the EQM Merger and the EQGP Buyout, respectively.

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Financial Statements (Policies)

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation. References in these financial statements to Equitrans Midstream or the Company refer collectively to Equitrans Midstream Corporation and, as applicable, its consolidated subsidiaries for all periods presented, unless otherwise indicated.

The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the requirements of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, these unaudited consolidated financial statements include all adjustments (consisting of only normal, recurring adjustments, unless otherwise disclosed in this Quarterly Report on Form 10-Q) necessary for a fair presentation of the financial position of the Company as of September 30, 2020 and December 31, 2019, the results of its operations and equity for the three and nine months ended September 30, 2020 and 2019 and its cash flows for the nine months ended September 30, 2020 and 2019. The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements at that date but does not include all of the information and notes required by GAAP for complete financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2019, which includes all disclosures required by GAAP.

Due to, among other things, the seasonal nature of the Company's utility customer contracts and temporary volume curtailments by certain of the Company's customers, including EQT, as well as producers’ well completion activities and varying needs for

fresh and produced water (which are partially driven by horizontal lateral lengths and the number of completion stages per well), the interim statements for the three and nine months ended September 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020.

For further information, refer to the Company's annual consolidated financial statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2019, as well as "Management's Discussion and Analysis of Financial Condition and Results of Operations" contained herein.

Recently Issued Accounting Standards

Recently Issued Accounting Standards

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The standard amended guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, this standard eliminated the probable initial recognition threshold in then current GAAP, and, in its place, requires an entity to recognize its current estimate of all expected credit losses. The amendments affected loans, debt securities, trade receivables, contract assets, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope of the standard that have the contractual right to receive cash. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses (Topic 326). The update provides entities with targeted transition relief that is intended to increase comparability of financial statement information for some entities that otherwise would have measured similar financial instruments using different measurement methodologies. In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments – Credit Losses. The update clarifies and addresses stakeholders' specific issues in ASU 2016-13.

The Company adopted the standard on January 1, 2020, using the modified retrospective method for all financial assets recorded at amortized cost. Results for reporting periods beginning after January 1, 2020 are presented under Topic 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company's current expected credit loss (CECL) methodology considers risks of collection based on a customer’s current credit status. The standard requires an entity to assess whether financial assets share similar risk characteristics and, if so, group such assets in a pool. Customer balances are aggregated for evaluation based on their credit risk rating, which takes into account changes in economic factors that impact a customer’s ability to meet its financial obligations. The Company's CECL methodology assigns a reserve, even if remote, to each customer based on credit risk. The table below summarizes the changes in the allowance for credit losses by outstanding receivable for the nine months ended September 30, 2020:

	Accounts Receivable		Contract Asset (a)		Other Assets (b)		Total
Balance at December 31, 2019	$	(285)	$	—	$	—	$	(285)
Adoption of Topic 326	(2,708)		—		(1,010)		(3,718)
Provision for (recovery of) expected credit losses	(616)		(222)		26		(812)
Balance at September 30, 2020	$	(3,609)	$	(222)	$	(984)	$	(4,815)

(a)    Included in other current assets in the consolidated balance sheets.

(b)    Includes the Company's Preferred Interest in EES and other long-term receivables.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement, Changes to the Disclosure Requirements for Fair Value Measurement, which makes a number of changes to the hierarchy associated with Level 1, 2 and 3 fair value measurements and the related disclosure requirements. This guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company adopted this standard on January 1, 2020. The adoption of this standard did not have an impact on the Company's financial statements.

In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes, which enhances and simplifies various aspects of the income tax accounting guidance including the elimination of certain exceptions related to the approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The guidance also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. The guidance will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. The Company early-adopted the standard in the first quarter of 2020 with no significant effect on its financial statements or related disclosures.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides practical expedients for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. This guidance is applicable for the Amended EQM Credit Facility, the Amended 2019 EQM Term Loan Agreement (as defined in Note 9) and the Eureka Credit Facility, as well as for each dividend following March 31, 2024 for the Equitrans Midstream Preferred Shares, which each use the London Inter-Bank Offered Rate (LIBOR) as a reference rate. The ASU is effective immediately but is only available through December 31, 2022. The Company is currently evaluating the potential impact of this standard on its financial statements.

In August 2020, the FASB issued ASU 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the accounting for convertible debt and convertible preferred stock by removing the requirements to separately present certain conversion features in equity. In addition, the amendments in the ASU 2020-06 also simplify the guidance in ASC Subtopic 815-40, Derivatives and Hedging: Contracts in Entity’s Own Equity, by removing certain criteria that must be satisfied in order to classify a contract as equity. Finally, the amendments revise the guidance on calculating earnings per share, requiring use of the if-converted method for all convertible instruments and rescinding an entity’s ability to rebut the presumption of share settlement for instruments that may be settled in cash or other assets. The amendments will be effective for fiscal years beginning after December 15, 2021. Early adoption is permitted for fiscal years beginning after December 15, 2020. Adoption of the guidance must commence at the beginning of the annual fiscal year. The Company is currently evaluating the potential impact of this standard on its financial statements.

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Financial Statements (Tables)

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

New Accounting Policy

The table below summarizes the changes in the allowance for credit losses by outstanding receivable for the nine months ended September 30, 2020:

	Accounts Receivable		Contract Asset (a)		Other Assets (b)		Total
Balance at December 31, 2019	$	(285)	$	—	$	—	$	(285)
Adoption of Topic 326	(2,708)		—		(1,010)		(3,718)
Provision for (recovery of) expected credit losses	(616)		(222)		26		(812)
Balance at September 30, 2020	$	(3,609)	$	(222)	$	(984)	$	(4,815)

(a)    Included in other current assets in the consolidated balance sheets.

(b)    Includes the Company's Preferred Interest in EES and other long-term receivables.

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Mergers and Acquisitions (Tables)

9 Months Ended

Sep. 30, 2020

Business Combinations [Abstract]

Schedule of Preliminary Purchase Price Allocations

The following table summarizes the final purchase price and allocation of the fair value of the assets acquired and liabilities assumed in the Bolt-on Acquisition as of April 10, 2019 by the Company, as well as certain measurement period adjustments made subsequent to the Company's initial valuation.

(in thousands)	Preliminary Purchase Price Allocation (As initially reported)		Measurement Period Adjustments (a)		Purchase Price Allocation (As adjusted)
Consideration given:
Cash consideration (b)	$	861,250	$	(11,404)	$	849,846
Buyout of portion of Eureka Midstream Class B Units and incentive compensation	2,530		—		2,530
Total consideration	863,780		(11,404)		852,376
Fair value of liabilities assumed:
Current liabilities	52,458		(9,857)		42,601
Long-term debt	300,825		—		300,825
Other long-term liabilities	10,203		—		10,203
Amount attributable to liabilities assumed	363,486		(9,857)		353,629
Fair value of assets acquired:
Cash	15,145		—		15,145
Accounts receivable	16,817		—		16,817
Inventory	12,991		(26)		12,965
Other current assets	882		—		882
Net property, plant and equipment	1,222,284		(8,906)		1,213,378
Intangible assets (c)	317,000		(6,000)		311,000
Deferred tax asset	5,773		(5,268)		505
Other assets	14,567		—		14,567
Amount attributable to assets acquired	1,605,459		(20,200)		1,585,259
Noncontrolling interests	(486,062)		7,602		(478,460)
Goodwill as of April 10, 2019	$	107,869	$	(8,663)	$	99,206
Impairment of goodwill (d)					(99,206)
Goodwill as of September 30, 2020					$	—

(a)    The Company recorded measurement period adjustments to its preliminary acquisition date fair values due to the refinement of its valuation models, assumptions and inputs. The measurement period adjustments were based upon information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the measurement of the amounts recognized at that date.

(b)     The cash consideration for the Bolt-on Acquisition was adjusted by approximately $11.4 million related to working capital adjustments and the release of all escrowed indemnification funds to EQM.

(c)    After considering the refinements to the valuation models, the Company estimated the fair value of the customer-related intangible assets acquired as part of the Bolt-on Acquisition to be $311.0 million. As a result, the fair value of the customer-related intangible assets was decreased by $6.0 million on September 30, 2019 with a corresponding increase to goodwill. In addition, the change to the provisional amount resulted in a decrease in amortization expense and accumulated amortization of approximately $0.4 million.

(d)    During the third quarter of 2019, the Company identified impairment indicators that suggested the fair value of its goodwill was more likely than not below its carrying amount. As such, the Company performed an interim goodwill impairment assessment, which resulted in the Company recognizing impairment to goodwill of approximately $268.1 million, of which $99.2 million was associated with its Eureka/Hornet reporting unit, bringing the reporting unit's goodwill balance to zero. See Note 4 for further detail.

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Financial Information by Business Segment (Tables)

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Schedule of Revenue from External Customers and Operating Income and Reconciliation to Net Income

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Revenues from customers:
Gathering	$	232,651	$	299,491	$	764,229	$	847,038
Transmission	93,329		87,299		288,869		289,926
Water	24,020		21,644		90,605		67,419
Total operating revenues	$	350,000	$	408,434	$	1,143,703	$	1,204,383
Operating income (loss):
Gathering (a)	$	129,186	$	(98,489)	$	400,647	$	177,720
Transmission	63,460		59,690		201,714		207,684
Water	10,118		7,722		40,173		18,980
Headquarters (b)	(2,255)		(7,376)		(24,646)		(16,621)
Total operating income (loss)	$	200,509	$	(38,453)	$	617,888	$	387,763
Reconciliation of operating income (loss) to net income (loss):
Equity income (c)	$	60,917	$	44,448	$	171,233	$	112,293
Other income	21,864		70		39,006		2,637
Loss on early extinguishment of debt	—		—		24,864		—
Net interest expense	86,411		65,606		219,960		188,268
Income tax expense	28,440		1,948		81,846		45,868
Net income (loss)	$	168,439	$	(61,489)	$	501,457	$	268,557

(a)Impairments of long-lived assets of $298.7 million for the three months ended September 30, 2019 and $55.6 million and $378.8 million for the nine months ended September 30, 2020 and 2019, respectively, were included in Gathering operating income (loss). See Note 4 for further information.

(b)Includes separation and other transaction costs and other unallocated corporate expenses.

(c)Equity income is included in the Transmission segment.

Schedule of Segment Assets

	September 30, 2020		December 31, 2019
	(Thousands)
Segment assets:
Gathering	$	7,743,615	$	7,572,911
Transmission (a)	4,279,330		3,903,707
Water	208,899		202,440
Total operating segments	12,231,844		11,679,058
Headquarters, including cash	398,836		362,651
Total assets	$	12,630,680	$	12,041,709

(a)The equity investments in the MVP Joint Venture are included in the Transmission segment.

Schedule of Depreciation and Amortization and Expenditures for Segment Assets

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Depreciation:
Gathering	$	44,648	$	38,943	$	126,915	$	104,502
Transmission	13,659		13,347		40,787		38,474
Water	8,105		6,907		22,720		19,801
Headquarters	360		263		849		3,953
Total	$	66,772	$	59,460	$	191,271	$	166,730
Capital expenditures for segment assets:
Gathering (a)	$	90,452	$	271,860	$	303,063	$	686,178
Transmission (b)	6,721		16,296		32,983		46,287
Water	2,530		13,466		8,377		31,490
Headquarters	447		1,068		3,234		6,787
Total (c)	$	100,150	$	302,690	$	347,657	$	770,742

(a)Includes approximately $13.5 million and $37.1 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2020, respectively, and includes approximately $6.7 million and $17.6 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and nine months ended September 30, 2019, respectively.

(b)Transmission capital expenditures do not include capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of $65.6 million and $211.7 million for the three months ended September 30, 2020 and 2019, respectively, and $144.3 million and $512.9 million for the nine months ended September 30, 2020 and 2019, respectively.

(c)The Company accrues capital expenditures when the work has been completed but the associated bills have not yet been paid. Accrued capital expenditures are excluded from the statements of consolidated cash flows until they are paid. The net impact of non-cash capital expenditures, including the effect of accrued capital expenditures, assumed capital expenditures associated with the Bolt-on Acquisition, transfers from inventory as assets are assigned to a project and capitalized share-based compensation costs, was $8.3 million and $(15.3) million for the three months ended September 30, 2020 and 2019, respectively, and $29.9 million and $(0.8) million for the nine months ended September 30, 2020 and 2019, respectively.

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Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenue Information, By Segment

The tables below provide disaggregated revenue information by business segment.

	Three Months Ended September 30, 2020
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	145,533	$	84,612	$	9,005	$	239,150
Volumetric-based fee revenues	87,118		8,717		15,015		110,850
Total operating revenues	$	232,651	$	93,329	$	24,020	$	350,000
	Three Months Ended September 30, 2019
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues	$	154,791	$	81,990	$	840	$	237,621
Volumetric-based fee revenues	144,700		5,309		20,804		170,813
Total operating revenues	$	299,491	$	87,299	$	21,644	$	408,434

	Nine Months Ended September 30, 2020
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	446,721	$	267,973	$	32,788	$	747,482
Volumetric-based fee revenues	317,508		20,896		57,817		396,221
Total operating revenues	$	764,229	$	288,869	$	90,605	$	1,143,703
	Nine Months Ended September 30, 2019
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues	$	431,520	$	263,051	$	4,531	$	699,102
Volumetric-based fee revenues	415,518		26,875		62,888		505,281
Total operating revenues	$	847,038	$	289,926	$	67,419	$	1,204,383

(a)    For the three months ended September 30, 2020, firm reservation fee revenues associated with Gathering and Water included approximately $2.6 million and $1.9 million, respectively, of MVC unbilled revenues. For the nine months ended September 30, 2020, firm reservation fee revenues associated with Gathering and Water included approximately $13.7 million and $11.4 million, respectively, of MVC unbilled revenues. There were no MVC unbilled revenues associated with Gathering and Water during the three and nine months ended September 30, 2019.

Contract with Customer, Asset and Liability

The following table presents changes in the Company's unbilled revenue balance during the nine months ended September 30, 2020:

	Unbilled Revenue
	(Thousands)
Balance as of January 1, 2020	$	—
Revenue recognized in excess of amounts invoiced (a)	25,086
Minimum volume commitments invoiced (b)	—
Balance as of September 30, 2020	$	25,086

(a)Revenues associated with unbilled MVCs are included in firm reservation fee revenues within the Gathering and Water segments, as described in the Summary of Disaggregated Revenues table above.

(b)Unbilled revenues are transferred to accounts receivable once the Company has an unconditional right to consideration from the customer.

The following table presents changes in the Company's deferred revenue balances during the nine months ended September 30, 2020:

	Deferred Revenue
	(Thousands)
Balance as of January 1, 2020	$	—
Amounts recorded during the period (a)	321,775
Amounts transferred during the period (b)	—
Balance as of September 30, 2020	$	321,775

(a)Includes deferred billed revenue of approximately $74.6 million and $148.8 million recorded during the three and nine months ended September 30, 2020, respectively, associated with the EQT Global GGA.

(b)Deferred revenues are recognized as revenue upon satisfaction of the Company's performance obligation to the customer.

Summary of Remaining Performance Obligations

The following table summarizes the estimated transaction price allocated to the Company's remaining performance obligations under all contracts with firm reservation fees and MVCs as of September 30, 2020 that the Company will invoice or transfer from contract liabilities and recognize in future periods.

		2020(a)		2021		2022		2023		2024		Thereafter		Total
	(Thousands)
Gathering firm reservation fees		$	22,081	$	106,127	$	158,721	$	158,628	$	157,127	$	1,433,923	$	2,036,607
Gathering revenues supported by MVCs		125,591		526,413		585,384		617,532		635,649		5,367,726		7,858,295
Transmission firm reservation fees		94,112		360,242		380,890		342,566		282,962		2,609,294		4,070,066
Water revenues supported by MVCs		9,006		16,521		60,000		60,000		60,000		105,000		310,527
Total (b)		$	250,790	$	1,009,303	$	1,184,995	$	1,178,726	$	1,135,738	$	9,515,943	$	14,275,495

(a)    October 1, 2020 through December 31, 2020.

(b)    Includes assumptions regarding timing for placing certain projects, including the MVP, in-service. Delays in the in-service dates for projects may substantially alter the remaining performance obligations for certain contracts with firm reservation fees and/or MVCs.

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Investments in Unconsolidated Entity (Tables)

9 Months Ended

Sep. 30, 2020

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Unaudited Condensed Financial Statements for the Investment in Unconsolidated Equity

The following tables summarize the unaudited condensed consolidated financial statements of the MVP Joint Venture in relation to the MVP project.

Condensed Consolidated Balance Sheets

	September 30, 2020		December 31, 2019
	(Thousands)
Current assets	$	290,541	$	102,638
Non-current assets	5,540,846		4,951,521
Total assets	$	5,831,387	$	5,054,159
Current liabilities	$	187,826	$	223,645
Equity	5,643,561		4,830,514
Total liabilities and equity	$	5,831,387	$	5,054,159

Condensed Statements of Consolidated Operations

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(Thousands)
Environmental remediation reserve	$	20	$	(516)	$	(295)	$	(2,682)
Other income	13		1,165		275		5,863
Net interest income	39,280		29,100		110,868		73,035
AFUDC — equity	91,653		67,902		258,693		170,416
Net income	$	130,966	$	97,651	$	369,541	$	246,632

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Earnings (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following tables set forth the computation of the basic and diluted earnings (loss) per share attributable to Equitrans Midstream common shareholders for the three and nine months ended September 30, 2020 and 2019:

	Three Months Ended September 30,
	2020				2019
	Basic		Diluted		Basic		Diluted
	(In thousands, except per share data)
Net income (loss)	$	168,439	$	168,439	$	(61,489)	$	(61,489)
Less: Net income (loss) attributable to noncontrolling interests (excluding EQM Series A Preferred Units)	3,973		3,973		(44,144)		(44,144)
Less: EQM Series A Preferred Units interest in net income	—		—		48,480		48,480
Less: Preferred dividends	14,628		14,628		—		—
Net income (loss) attributable to Equitrans Midstream common shareholders	$	149,838	$	149,838	$	(65,825)	$	(65,825)
Basic weighted average common shares outstanding	432,773		432,773		254,915		254,915
Dilutive securities (a)(b)	—		48		—		—
Diluted weighted average common shares outstanding	432,773		432,821		254,915		254,915
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders	$	0.35	$	0.35	$	(0.26)	$	(0.26)

	Nine Months Ended September 30,
	2020				2019
	Basic		Diluted		Basic		Diluted
	(In thousands, except per share data)
Net income	$	501,457	$	501,457	$	268,557	$	268,557
Less: Net income attributable to noncontrolling interests (excluding EQM Series A Preferred Units)	163,406		163,406		155,082		155,082
Less: EQM Series A Preferred Units interest in net income	47,359		47,359		48,480		48,480
Less: Preferred dividends	44,132		44,132		—		—
Net income attributable to Equitrans Midstream common shareholders	$	246,560	$	246,560	$	64,995	$	64,995
Basic weighted average common shares outstanding	314,411		314,411		254,868		254,868
Dilutive securities (a)(b)	—		—		—		19
Diluted weighted average common shares outstanding	314,411		314,411		254,868		254,887
Earnings per share of common stock attributable to Equitrans Midstream common shareholders	$	0.78	$	0.78	$	0.26	$	0.25

(a)For the periods presented, as applicable, EQM's dilutive securities issued and outstanding prior to the EQM Merger did not have a material impact on the Company's diluted earnings per share.

(b)For the three and nine months ended September 30, 2020, the Company excluded 30,099 and 11,995 (in thousands), respectively, of weighted average anti-dilutive securities related to the Equitrans Midstream Preferred Shares and stock-based compensation awards. For the three months ended September 30, 2019, the Company excluded 45 (in thousands) of weighted average anti-dilutive securities related to stock-based compensation awards.

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Financial Statements (Details)				3 Months Ended
	Jun. 17, 2020 USD ($)	Feb. 26, 2020 USD ($) $ / shares	Nov. 12, 2018	Jun. 30, 2020 USD ($)
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percentage of cash distributions paid			80.10%
Redemptions				$ 661,874,000
Series A Preferred Units | EQM Merger
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Redemptions	$ 600,000,000	$ 600,000,000
Redemption percentage rate	1.01
Purchase price (in dollars per share) | $ / shares		$ 48.77
Preferred Stock | EQM Merger
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Redemption percentage rate	2.44
EQT Corporation and Subsidiaries | Equitrans Midstream
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Limited partner ownership interest			19.90%

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Financial Statements - Impact of Adoption (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	$ (285)
Provision for (recovery of) expected credit losses	(812)
Balance at September 30, 2020	(4,815)
Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	(3,718)
Accounts Receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	(285)
Provision for (recovery of) expected credit losses	(616)
Balance at September 30, 2020	(3,609)
Accounts Receivable | Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	(2,708)
Contract Asset
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	0
Provision for (recovery of) expected credit losses	(222)
Balance at September 30, 2020	(222)
Contract Asset | Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	0
Other Assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	0
Provision for (recovery of) expected credit losses	26
Balance at September 30, 2020	(984)
Other Assets | Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	$ (1,010)

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Investments in Consolidated, Non-Wholly-Owed Entities (Details)						3 Months Ended					9 Months Ended
	Aug. 13, 2020 USD ($)	Jun. 17, 2020 USD ($)	Feb. 26, 2020 USD ($) day $ / shares shares	Mar. 13, 2019	Feb. 13, 2019 shares	Sep. 30, 2020 USD ($) shares	Jun. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2020 USD ($) shares	Sep. 30, 2019 USD ($)
Class of Stock
Aggregate change in common stock and noncontrolling interest									$ 1,627,000	$ (346,543,000)
Decrease in deferred tax asset										346,500,000
Redemptions							$ 661,874,000
Increase in deferred tax liability						$ 257,200,000
Transaction costs						984,000		$ 256,000			$ 23,797,000	$ 24,606,000
Conversion basis of common stock				100.00%
Convertible units			$ 20,000,000.0
Trading price threshold (per unit) | $ / shares			$ 27.99
Threshold trading days			20 days
Threshold amount of stock price trigger (in shares) | shares			1,000,000
Convertible common stock, consecutive trading days | day			20
Conversion price (in usd per share) | $ / shares			$ 19.99
Threshold percentage of consideration payable trigger, conversion ratio			110.00%
Increase in mezzanine equity							667,200,000
Change in deferred taxes							5,300,000
Minimum
Class of Stock
Threshold percentage of consideration payable trigger			90.00%
Threshold percentage of consideration payable trigger, redemption covenant			101.00%
Threshold percentage of consideration payable trigger, volume weighted average price covenant			95.00%
Series A Preferred Units | EQM Merger
Class of Stock
Redemption percentage rate		1.01
Redemptions		$ 600,000,000	$ 600,000,000
Cash paid to redeem EQM Series A preferred units		617,300,000
Partners' Capital		$ 590,100,000
Premium recognized on redemption											$ 27,300,000
Aggregate amount of distributions to be made to holder of Equitrans Midstream preferred shares	$ 10,900,000
Preferred Stock | EQM Merger
Class of Stock
Redemption percentage rate		2.44
EQM | Limited Partner Common
Class of Stock
Canceled common units (in shares) | shares					21,811,643
Common Stock
Class of Stock
Aggregate change in common stock and noncontrolling interest							82,700,000		$ 1,627,000	991,098,000
Redemptions							82,717,000
Common Stock | EQM Merger
Class of Stock
Aggregate change in common stock and noncontrolling interest						2,700,000,000
Noncontrolling Interests
Class of Stock
Aggregate change in common stock and noncontrolling interest							579,200,000			$ (1,337,641,000)
Redemptions							$ 579,157,000
Noncontrolling Interests | EQM Merger
Class of Stock
Aggregate change in common stock and noncontrolling interest						$ 3,000,000,000.0
EQM | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						117,245,455					117,245,455
EQM | Common Class B | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						7,000,000					7,000,000
EQM | EQGP | Limited Partner Common
Class of Stock
Partners' capital common units outstanding (in shares) | shares					21,811,643
EQM | Equitrans Gathering Holdings, LLC | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						89,505,616					89,505,616
EQM | Equitrans Gathering Holdings, LLC | Common Class B | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						6,153,907					6,153,907
EQM | EQM GP Corporation | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						89,536					89,536
EQM | EQM GP Corporation | Common Class B | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						6,155					6,155
EQM | Equitrans Midstream Holdings, LLC | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						27,650,303					27,650,303
EQM | Equitrans Midstream Holdings, LLC | Common Class B | Limited Partner Common
Class of Stock
Common units held (in shares) | shares						839,938					839,938
EQM | Public Owned
Class of Stock
Limited partner ownership interest							40.10%
IDR Merger Agreement | EQM
Class of Stock
Common units received (in shares) | shares					80,000,000
IDR Merger Agreement | EQM | Common Class B
Class of Stock
Common units received (in shares) | shares					7,000,000
Private Placement
Class of Stock
Cumulative quarterly dividend rate			9.75%
Increase in quarterly distribution, percent			8.15%
Private Placement | Minimum
Class of Stock
Cumulative quarterly dividend rate			10.50%

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Mergers and Acquisitions - Narrative (Details) $ in Thousands						3 Months Ended				9 Months Ended
	Sep. 30, 2020 USD ($)	Apr. 01, 2020 USD ($)	Mar. 31, 2020	Apr. 10, 2019 USD ($) mi shares	Mar. 13, 2019 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Business Acquisition
Shares issued to fund business acquisition (in shares) | shares				24,605,291
Interest, net of amount capitalized										$ 221,918	$ 223,257
Amortization of intangible assets						$ 16,204			$ 14,540	46,990	38,677
Hornet Midstream Holdings, LLC
Business Acquisition
Length of gathering lines (in miles) | mi				15
Intangible assets, useful life		7 years 3 months
Impairment of intangible assets								$ 17,700	36,400
Hornet Midstream Holdings, LLC | EQM
Business Acquisition
Limited partner ownership interest (as a percent)				100.00%
Bolt-on Acquisition
Business Acquisition
Cash consideration	$ 852,376			$ 863,780
Repayment of outstanding term loan credit					$ 28,200
Interest, net of amount capitalized					100
Acquisition related expenses									300		17,000
Professional fees									300		15,300
Compensation arrangements related to business acquisitions											1,700
Goodwill prior to impairment adjustment	99,206			99,200		99,206				99,206
Noncontrolling interest	478,460			486,062		478,460			478,500	478,460	478,500
Amortization of intangible assets							$ (400)
Impairment of intangible assets									$ 36,400		$ 36,400
Tax deductible goodwill				$ 43,000
Bolt-on Acquisition | EQM
Business Acquisition
Total consideration					1,040,000
Cash consideration					852,000
Assumed pro-rata debt					$ 192,000
Eureka Midstream Holdings, LLC
Business Acquisition
Length of gathering lines (in miles) | mi				190
Intangible assets, useful life		10 years 9 months	20 years
Amortization of intangible assets		$ 9,100
Intangible assets, amortization expense, 2020	5,800					5,800				5,800
Intangible assets, amortization expense, 2021	23,300					23,300				23,300
Intangible assets, amortization expense, 2022	23,300					23,300				23,300
Intangible assets, amortization expense, 2023	23,300					23,300				23,300
Intangible assets, amortization expense, 2024	23,300					23,300				23,300
Intangible assets, amortization expense, 2025	$ 23,300					$ 23,300				$ 23,300
Eureka Midstream Holdings, LLC | EQM
Business Acquisition
Limited partner ownership interest (as a percent)				60.00%

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Mergers and Acquisitions - Schedule of Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands			3 Months Ended				6 Months Ended	9 Months Ended
	Sep. 30, 2020	Apr. 10, 2019	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019
Goodwill
Goodwill as of April 10, 2019					$ 486,698			$ 486,698
Impairment of goodwill					(268,100)
Goodwill as of September 30, 2020	$ 486,698		$ 486,698				$ 486,698	486,698
Decrease in amortization expense			(16,204)			$ (14,540)		(46,990)	$ (38,677)
Bolt-on Acquisition
Consideration given:
Cash consideration	849,846	$ 861,250
Buyout of portion of Eureka Midstream Class B Units and incentive compensation	2,530	2,530
Total consideration	852,376	863,780
Fair value of liabilities assumed:
Current liabilities	42,601	52,458	42,601				42,601	42,601
Long-term debt	300,825	300,825	300,825				300,825	300,825
Other long-term liabilities	10,203	10,203	10,203				10,203	10,203
Amount attributable to liabilities assumed	353,629	363,486	353,629				353,629	353,629
Fair value of assets acquired:
Cash	15,145	15,145	15,145				15,145	15,145
Accounts receivable	16,817	16,817	16,817				16,817	16,817
Inventory	12,965	12,991	12,965				12,965	12,965
Other current assets	882	882	882				882	882
Net property, plant and equipment	1,213,378	1,222,284	1,213,378				1,213,378	1,213,378
Intangible assets	311,000	317,000	311,000				311,000	311,000
Deferred tax asset	505	5,773	505				505	505
Other assets	14,567	14,567	14,567				14,567	14,567
Amount attributable to assets acquired	1,585,259	1,605,459	1,585,259				1,585,259	1,585,259
Noncontrolling interests	(478,460)	(486,062)	(478,460)			$ (478,500)	(478,460)	(478,460)	$ (478,500)
Measurement Period Adjustments
Total consideration				$ (11,400)			(11,404)
Current liabilities							(9,857)
Amount attributable to liabilities assumed							(9,857)
Inventory							(26)
Net property, plant and equipment							(8,906)
Intangible assets							(6,000)
Deferred tax asset							(5,268)
Amount attributable to assets acquired							(20,200)
Noncontrolling interests							7,602
Goodwill as of April 10, 2019							(8,663)
Goodwill
Goodwill prior to impairment adjustment	99,206	99,200	99,206				99,206	99,206
Goodwill as of April 10, 2019
Impairment of goodwill							(99,206)
Goodwill as of September 30, 2020	$ 0	$ 107,869	$ 0		$ 0		$ 0	$ 0
Decrease in amortization expense				$ 400

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Impairments of Long-Lived Assets and Other-Than-Temporary Decline in Value (Details) $ in Thousands					3 Months Ended			6 Months Ended	9 Months Ended
		Feb. 26, 2020 segment reporting_unit	Feb. 25, 2020 reporting_unit segment	Aug. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)
Property, Plant and Equipment
Number of operating segments | segment		3	3						3
Number of reporting units | reporting_unit		6	7
Impairment of goodwill						$ 268,100
Impairments of long-lived assets (Note 4)	[1]				$ 0		$ 305,459		$ 55,581	$ 385,594
Bolt-on Acquisition
Property, Plant and Equipment
Impairment of goodwill								$ 99,206
Impairment of intangible assets							$ 36,400			36,400
Eureka Midstream, LLC And Hornet Midstream, LLC Reporting Units
Property, Plant and Equipment
Impairment of goodwill				$ 99,200
RMP PA Gas Gathering Reporting Unit
Property, Plant and Equipment
Impairment of goodwill				$ 168,900
Gathering
Property, Plant and Equipment
Impairment of property and equipment									37,900
Impairment of intangible assets									$ 17,700
Impairments of long-lived assets (Note 4)										$ 80,100

[1] See Note 4 for disclosure regarding impairments of long-lived assets.

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Financial Information by Business Segment - Narrative (Details)			9 Months Ended
	Feb. 26, 2020 segment	Feb. 25, 2020 segment	Sep. 30, 2020 business_line segment
Segment Reporting [Abstract]
Number of operating segments | segment	3	3	3
Number of lines of business | business_line			3

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Financial Information by Business Segment - Schedule of Segment Income (Details) - USD ($) $ in Thousands		3 Months Ended					9 Months Ended
		Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues from customers:
Operating revenues	[1]	$ 350,000		$ 408,434			$ 1,143,703	$ 1,204,383
Operating income (loss):
Total operating income (loss)		200,509		(38,453)			617,888	387,763
Reconciliation of operating income (loss) to net income (loss):
Equity income	[2]	60,917		44,448			171,233	112,293
Other income	[3]	21,864		70			39,006	2,637
Loss on early extinguishment of debt	[4]	0		0			24,864	0
Net interest expense	[1]	86,411		65,606			219,960	188,268
Income tax expense		28,440		1,948			81,846	45,868
Net income (loss)		168,439	$ 189,560	(61,489)	$ 130,480	$ 199,566	501,457	268,557
Impairment of long-lived assets	[5]	0		305,459			55,581	385,594
Gathering
Revenues from customers:
Operating revenues		232,651		299,491			764,229	847,038
Reconciliation of operating income (loss) to net income (loss):
Impairment of long-lived assets								80,100
Transmission
Revenues from customers:
Operating revenues		93,329		87,299			288,869	289,926
Water
Revenues from customers:
Operating revenues		24,020		21,644			90,605	67,419
Operating segments | Gathering
Revenues from customers:
Operating revenues		232,651		299,491			764,229	847,038
Operating income (loss):
Total operating income (loss)		129,186		(98,489)			400,647	177,720
Reconciliation of operating income (loss) to net income (loss):
Impairment of long-lived assets				298,700			55,600	378,800
Operating segments | Transmission
Revenues from customers:
Operating revenues		93,329		87,299			288,869	289,926
Operating income (loss):
Total operating income (loss)		63,460		59,690			201,714	207,684
Operating segments | Water
Revenues from customers:
Operating revenues		24,020		21,644			90,605	67,419
Operating income (loss):
Total operating income (loss)		10,118		7,722			40,173	18,980
Headquarters
Operating income (loss):
Total operating income (loss)		$ (2,255)		$ (7,376)			$ (24,646)	$ (16,621)

[1] Includes related party activity with EQT. See Note 7.

[2] Represents equity income from the MVP Joint Venture. See Note 8.

[3] See Note 10 for disclosures regarding derivative instruments.

[4] See Note 9 for disclosure regarding loss on early extinguishment of debt.

[5] See Note 4 for disclosure regarding impairments of long-lived assets.

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Financial Information by Business Segment - Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Long-Lived Assets
Total assets	$ 12,630,680	$ 12,041,709
Operating segments
Long-Lived Assets
Total assets	12,231,844	11,679,058
Operating segments | Gathering
Long-Lived Assets
Total assets	7,743,615	7,572,911
Operating segments | Transmission
Long-Lived Assets
Total assets	4,279,330	3,903,707
Operating segments | Water
Long-Lived Assets
Total assets	208,899	202,440
Headquarters
Long-Lived Assets
Total assets	$ 398,836	$ 362,651

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Financial Information by Business Segment - Depreciation and Capital Expenditures for Segment Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Information
Depreciation	$ 66,772	$ 59,460	$ 191,271	$ 166,730
Capital expenditures for segment assets	100,150	302,690	347,657	770,742
Capitalized share-based compensation cost	8,300	(15,300)	29,900	(800)
Operating segments | Gathering
Segment Information
Depreciation	44,648	38,943	126,915	104,502
Capital expenditures for segment assets	90,452	271,860	303,063	686,178
Operating segments | Gathering | Eureka Midstream Holdings, LLC
Segment Information
Capital expenditures for segment assets	13,500	6,700	37,100	17,600
Operating segments | Transmission
Segment Information
Depreciation	13,659	13,347	40,787	38,474
Capital expenditures for segment assets	6,721	16,296	32,983	46,287
Operating segments | Transmission | MVP Southgate Project
Segment Information
Capital expenditures for segment assets	65,600	211,700	144,300	512,900
Operating segments | Water
Segment Information
Depreciation	8,105	6,907	22,720	19,801
Capital expenditures for segment assets	2,530	13,466	8,377	31,490
Headquarters
Segment Information
Depreciation	360	263	849	3,953
Capital expenditures for segment assets	$ 447	$ 1,068	$ 3,234	$ 6,787

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Revenue from Contracts with Customers - Schedule of Disaggregated Revenue Information, by Business Segment (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue
Operating revenues	[1]	$ 350,000,000	$ 408,434,000	$ 1,143,703,000	$ 1,204,383,000
Firm reservation fee revenues
Disaggregation of Revenue
Operating revenues		239,150,000	237,621,000	747,482,000	699,102,000
Volumetric-based fee revenues
Disaggregation of Revenue
Operating revenues		110,850,000	170,813,000	396,221,000	505,281,000
Gathering
Disaggregation of Revenue
Operating revenues		232,651,000	299,491,000	764,229,000	847,038,000
Gathering | MVC
Disaggregation of Revenue
Operating revenues		2,600,000	0	13,700,000	0
Gathering | Firm reservation fee revenues
Disaggregation of Revenue
Operating revenues		145,533,000	154,791,000	446,721,000	431,520,000
Gathering | Volumetric-based fee revenues
Disaggregation of Revenue
Operating revenues		87,118,000	144,700,000	317,508,000	415,518,000
Transmission
Disaggregation of Revenue
Operating revenues		93,329,000	87,299,000	288,869,000	289,926,000
Transmission | Firm reservation fee revenues
Disaggregation of Revenue
Operating revenues		84,612,000	81,990,000	267,973,000	263,051,000
Transmission | Volumetric-based fee revenues
Disaggregation of Revenue
Operating revenues		8,717,000	5,309,000	20,896,000	26,875,000
Water
Disaggregation of Revenue
Operating revenues		24,020,000	21,644,000	90,605,000	67,419,000
Water | MVC
Disaggregation of Revenue
Operating revenues		1,900,000	0	11,400,000	0
Water | Firm reservation fee revenues
Disaggregation of Revenue
Operating revenues		9,005,000	840,000	32,788,000	4,531,000
Water | Volumetric-based fee revenues
Disaggregation of Revenue
Operating revenues		$ 15,015,000	$ 20,804,000	$ 57,817,000	$ 62,888,000

[1] Includes related party activity with EQT. See Note 7.

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Revenue from Contracts with Customers - Unbilled Revenue Rollforward (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Change in Contract with Customer, Asset
Balance as of January 1, 2020	$ 0
Revenue recognized in excess of amounts invoiced (a)	25,086
Minimum volume commitments invoiced	0
Balance as of September 30, 2020	$ 25,086

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Revenue from Contracts with Customers - Deferred Revenue Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Balance as of January 1, 2020		$ 0
Amounts recorded during the period		321,775
Amounts transferred during the period		0
Balance as of September 30, 2020	$ 321,775	321,775
Contract liability		121,483	$ 0
EQT Corporation and Subsidiaries
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Contract liability	$ 74,600	$ 148,800

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Revenue from Contracts with Customers - Summary of Remaining Performance Obligations (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 14,275,495
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	250,790
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	1,009,303
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	1,184,995
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	1,178,726
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	1,135,738
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	9,515,943
Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	4,070,066
Transmission firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 94,112
Remaining performance obligations, expected timing	3 months
Transmission firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 360,242
Remaining performance obligations, expected timing	1 year
Transmission firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 380,890
Remaining performance obligations, expected timing	1 year
Transmission firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 342,566
Remaining performance obligations, expected timing	1 year
Transmission firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 282,962
Remaining performance obligations, expected timing	1 year
Transmission firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 2,609,294
Remaining performance obligations, expected timing
Water revenues supported by MVCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 310,527
Water revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 9,006
Remaining performance obligations, expected timing	3 months
Water revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 16,521
Remaining performance obligations, expected timing	1 year
Water revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 60,000
Remaining performance obligations, expected timing	1 year
Water revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 60,000
Remaining performance obligations, expected timing	1 year
Water revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 60,000
Remaining performance obligations, expected timing	1 year
Water revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 105,000
Remaining performance obligations, expected timing
Gathering firm reservation fees | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 2,036,607
Gathering firm reservation fees | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 22,081
Remaining performance obligations, expected timing	3 months
Gathering firm reservation fees | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 106,127
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 158,721
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 158,628
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 157,127
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 1,433,923
Remaining performance obligations, expected timing
Gathering revenues supported by MVCs | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 7,858,295
Gathering revenues supported by MVCs | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 125,591
Remaining performance obligations, expected timing	3 months
Gathering revenues supported by MVCs | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 526,413
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 585,384
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 617,532
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 635,649
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Gathering | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 5,367,726
Remaining performance obligations, expected timing

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Revenue from Contracts with Customers - Narrative (Details) $ in Thousands			3 Months Ended		9 Months Ended
	Mar. 05, 2020 USD ($) shares	Feb. 26, 2020 USD ($) agreement Bcf	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Disaggregation of Revenue
Estimated aggregate fee relief, year one		$ 270,000
Estimated aggregate fee relief, year two		230,000
Estimated aggregate fee relief, year three		35,000
Option to forgo fee relief, year one		145,000
Option to forgo fee relief, year two		90,000
Cash payment to be made in exchange for fee relief		196,000
Contract liability		$ 121,500			$ 321,775	$ 0
Number of shares purchased			$ 190,992	$ 238,455
Deferred tax liability					17,200
Henry Hub cash payment
Disaggregation of Revenue
Derivative instrument, at fair value					$ 89,200
EQM
Disaggregation of Revenue
Number of share purchase agreements | agreement		2
Common Stock, Cash Shares
Disaggregation of Revenue
Number of shares purchased (in shares) | shares	4,769,496
Common Stock, Rate Relief Shares And Cash Shares
Disaggregation of Revenue
Number of shares purchased (in shares) | shares	20,530,256
Share Purchase Agreement | Common Stock, Cash Shares
Disaggregation of Revenue
Number of shares purchased	$ 46,000
Affiliated Entity | Water Services Letter Agreement
Disaggregation of Revenue
Fees incurred for services		$ 60,000
EQT Corporation and Subsidiaries
Disaggregation of Revenue
Firm reservation capacity, per day | Bcf		3.0
Firm reservation capacity, step up per day | Bcf		4.0
Derivative instrument, at fair value		$ 51,500
EQT Corporation and Subsidiaries | Share Purchase Agreement
Disaggregation of Revenue
Number of shares purchased	7,000
EQT Corporation and Subsidiaries | Share Purchase Agreement | Common Stock, Rate Relief Shares And Cash Shares
Disaggregation of Revenue
Number of shares purchased	$ 196,000
Gathering
Disaggregation of Revenue
Weighted average remaining term					15 years
Transmission
Disaggregation of Revenue
Weighted average remaining term					14 years

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Related Party Transactions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Feb. 26, 2020	Dec. 31, 2019
Related Party Transaction
Shares owned (in shares)	432,470,000		432,470,000			254,745,000
Operating and maintenance expense		$ 2,400,000		$ 2,400,000
Selling, general and administrative expense		1,000,000.0		1,000,000.0
Accounts receivable	$ 194,300,000		$ 194,300,000			$ 175,200,000
Unbilled revenue	11,400,000		11,400,000
EQT Corporation and Subsidiaries
Related Party Transaction
Revenue from related party	222,700,000	275,400,000	741,200,000	843,900,000
Affiliated Entity
Related Party Transaction
Interest income	1,500,000	$ 1,600,000	4,600,000	$ 4,800,000
Interest receivable						110,100,000
Affiliated Entity | Other current assets
Related Party Transaction
Interest receivable	5,200,000		5,200,000			5,000,000.0
Affiliated Entity | Other assets
Related Party Transaction
Interest receivable	$ 101,100,000		$ 101,100,000			105,100,000
EQT Corporation and Subsidiaries | EQM | Affiliated Entity
Related Party Transaction
Maximum borrowing capacity					$ 250,000,000
EQT Corporation and Subsidiaries | Equitrans Midstream
Related Party Transaction
Shares owned (in shares)	25,296,026		25,296,026
Ownership interest	5.90%		5.90%
EQM | Affiliated Entity | Level 3 | Carrying Value
Related Party Transaction
Preferred interest	$ 106,300,000		$ 106,300,000			$ 110,000,000

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Investments in Unconsolidated Entity - Narrative (Details) $ in Millions		1 Months Ended			9 Months Ended
	Nov. 04, 2019 USD ($)	Nov. 30, 2020 USD ($)	Oct. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) mi	Sep. 30, 2020 USD ($) mi	Dec. 31, 2020	Nov. 03, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Apr. 30, 2018 mi
Con Edison | Maximum
Schedule of Equity Method Investments
Investment cap	$ 530.0
MVP Joint Venture | Beneficial Owner
Schedule of Equity Method Investments
Percentage of ownership interest					66.67%
MVP Southgate Project
Schedule of Equity Method Investments
Letter of credit outstanding				$ 14.2	$ 14.2			$ 14.2
MVP Project
Schedule of Equity Method Investments
Letter of credit outstanding				220.2	220.2			$ 220.2
MVP Project | Subsequent Event
Schedule of Equity Method Investments
Letter of credit outstanding							$ 231.2
Variable Interest Entity, Not Primary Beneficiary | MVP Joint Venture
Schedule of Equity Method Investments
Payments to joint venture	$ 5,800.0				6,000.0
Maximum financial statement exposure				$ 2,829.0	$ 2,829.0
Variable Interest Entity, Not Primary Beneficiary | MVP Joint Venture | Scenario, Forecast
Schedule of Equity Method Investments
Maximum financial statement exposure							$ 2,967.0
Variable Interest Entity, Not Primary Beneficiary | MVP Joint Venture | EQM
Schedule of Equity Method Investments
Ownership interest				45.90%	45.90%
Variable Interest Entity, Not Primary Beneficiary | MVP Joint Venture | EQM | Scenario, Forecast
Schedule of Equity Method Investments
Ownership interest						47.60%
Variable Interest Entity, Not Primary Beneficiary | MVP Southgate Project
Schedule of Equity Method Investments
Ownership interest				47.20%	47.20%
Variable Interest Entity, Not Primary Beneficiary | MVP Southgate Project | Subsequent Event
Schedule of Equity Method Investments
Payments to joint venture			$ 0.7
Variable Interest Entity, Not Primary Beneficiary | MVP Project
Schedule of Equity Method Investments
Capital contribution payable to MVP Joint Venture				$ 126.6
Variable Interest Entity, Not Primary Beneficiary | MVP Project | Subsequent Event
Schedule of Equity Method Investments
Payments to joint venture			$ 14.4
Variable Interest Entity, Not Primary Beneficiary | MVP Project | Scenario, Forecast | Subsequent Event
Schedule of Equity Method Investments
Payments to joint venture		$ 112.2
Variable Interest Entity, Not Primary Beneficiary | MVP Holdco Project | Subsequent Event
Schedule of Equity Method Investments
Payments to joint venture		$ 0.3
MVP
Schedule of Equity Method Investments
Length of pipeline (in miles) | mi				300	300
MVP | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments
Issuance of performance guarantee, remaining capital obligation, percentage									33.00%
Issuance of performance guarantee									$ 223.0
MVP Southgate Project
Schedule of Equity Method Investments
Length of pipeline (in miles) | mi										75
MVP Southgate Project | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments
Issuance of performance guarantee									$ 14.0

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Investments in Unconsolidated Entity - Balance Sheet for the Investment in Unconsolidated Equity (Details) - MVP Joint Venture - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Condensed Consolidated Balance Sheets
Current assets	$ 290,541	$ 102,638
Non-current assets	5,540,846	4,951,521
Total assets	5,831,387	5,054,159
Current liabilities	187,826	223,645
Equity	5,643,561	4,830,514
Total liabilities and equity	$ 5,831,387	$ 5,054,159

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Investments in Unconsolidated Entity - Income Statement for the Investment in Unconsolidated Equity (Details) - MVP Joint Venture - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Condensed Statements of Consolidated Operations
Environmental remediation reserve	$ 20	$ (516)	$ (295)	$ (2,682)
Other income	13	1,165	275	5,863
Net interest income	39,280	29,100	110,868	73,035
AFUDC — equity	91,653	67,902	258,693	170,416
Net income	$ 130,966	$ 97,651	$ 369,541	$ 246,632

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Debt - Equitrans Midstream Term Loan Facility (Details) - USD ($)			1 Months Ended	2 Months Ended	3 Months Ended	9 Months Ended
		Mar. 03, 2020	Dec. 31, 2018	Mar. 03, 2020	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument
Current portion of revolving credit facility borrowings and long-term debt	[1]						$ 302,500,000	$ 6,000,000
Letters of credit outstanding	[2]						$ 485,000,000	902,500,000
Term Loans | Equitrans Midstream Term Loans
Debt Instrument
Principal			$ 600,000,000
Net proceeds from offering		$ 650,000,000.0	568,100,000
Discount			18,000,000.0
Debt issuance costs			$ 13,900,000
Write off of debt issuance cost		$ 24,400,000
Current portion of revolving credit facility borrowings and long-term debt								6,000,000.0
Long term line of credit								594,000,000.0
Letters of credit outstanding								$ 0
Weighted average annual interest rate				6.20%	6.80%	6.90%

[1] Includes aggregate borrowings outstanding on the Eureka Credit Facility (as defined in Note 9) as of September 30, 2020. See Note 9 for further detail.

[2] Includes aggregate borrowings outstanding on the Amended EQM Credit Facility (as defined in Note 9) as of September 30, 2020. As of December 31, 2019, the Company had aggregate borrowings outstanding of approximately $610 million and $293 million on the Amended EQM Credit Facility and the Eureka Credit Facility, respectively. The Company had no borrowings outstanding under the Equitrans Midstream Credit Facility as of December 31, 2019. See Note 9 for further detail.

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Debt - Equitrans Midstream Credit Facility (Details) - USD ($)			2 Months Ended	3 Months Ended	9 Months Ended
		Mar. 03, 2020	Mar. 03, 2020	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2020	Dec. 31, 2019	Oct. 31, 2018
Debt Instrument
Letters of credit outstanding	[1]					$ 485,000,000	$ 902,500,000
Equitrans Midstream Credit Facility | Line of credit
Debt Instrument
Maximum borrowing capacity								$ 100,000,000
Write off of debt issuance cost		$ 500,000
Long term line of credit							0
Maximum amount of short term loans outstanding					$ 44,000,000
Average daily balance of short term loans outstanding					$ 4,000,000
Weighted average annual interest rate					4.30%
Payment commitment fees			$ 100,000	$ 100,000	$ 300,000
Equitrans Midstream Credit Facility | Letter of credit
Debt Instrument
Letters of credit outstanding		$ 0	$ 0				$ 0

[1] Includes aggregate borrowings outstanding on the Amended EQM Credit Facility (as defined in Note 9) as of September 30, 2020. As of December 31, 2019, the Company had aggregate borrowings outstanding of approximately $610 million and $293 million on the Amended EQM Credit Facility and the Eureka Credit Facility, respectively. The Company had no borrowings outstanding under the Equitrans Midstream Credit Facility as of December 31, 2019. See Note 9 for further detail.

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Debt - Amended EQM Revolving Credit Facility and 2019 EQM Term Loan Agreement (Details)			1 Months Ended		3 Months Ended			6 Months Ended	9 Months Ended
		Oct. 31, 2018 USD ($)	Aug. 31, 2019 USD ($)	Oct. 31, 2018 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Nov. 01, 2018 USD ($)
Debt Instrument
Letters of credit outstanding	[1]				$ 485,000,000				$ 485,000,000		$ 902,500,000
EQM | EQM Credit Facility | Revolving Credit Facility
Debt Instrument
Borrowings outstanding					485,000,000				485,000,000		610,000,000
Letters of credit outstanding					$ 235,000,000				$ 235,000,000		1,000,000
Weighted average annual interest rate					2.60%	3.70%			2.90%	3.80%
EQM | Line of credit | EQM Credit Facility
Debt Instrument
Maximum borrowing capacity		$ 1,000,000,000		$ 1,000,000,000								$ 3,000,000,000
Additional available borrowings				$ 750,000,000
Maximum amount of short term loans outstanding					$ 485,000,000	$ 1,690,000,000			$ 2,040,000,000	$ 1,690,000,000
Average daily balance of short term loans outstanding					485,000,000	865,000,000			975,000,000	950,000,000
Commitment fees					$ 2,400,000	$ 1,200,000			$ 5,000,000.0	$ 3,300,000
EQM | Line of credit | EQM Credit Facility | Each Fiscal Quarter Ending on or after the Revolver Amendment Date and on or prior to Mar.31 2021
Debt Instrument
Debt Instrument, Covenant Compliance, Consolidated Leverage Ratio		5.75		5.75
EQM | Line of credit | EQM Credit Facility | Each Fiscal Quarter Ending on and After Mar. 31 2023
Debt Instrument
Debt Instrument, Covenant Compliance, Consolidated Leverage Ratio		5.00		5.00
EQM | Line of credit | EQM Credit Facility | Base Rate | Minimum
Debt Instrument
Basis spread on variable rate		0.125%
EQM | Line of credit | EQM Credit Facility | Base Rate | Maximum
Debt Instrument
Basis spread on variable rate		1.75%
EQM | Line of credit | EQM Credit Facility | Eurodollar | Minimum
Debt Instrument
Basis spread on variable rate		1.125%
EQM | Line of credit | EQM Credit Facility | Eurodollar | Maximum
Debt Instrument
Basis spread on variable rate		2.75%
EQM | Unsecured Debt | 2019 Term Loan Facility
Debt Instrument
Principal			$ 1,400,000,000
Weighted average annual interest rate					2.40%	3.60%			2.80%
Net proceeds from offering			1,397,400,000
Debt issuance costs			2,600,000
Long term line of credit					$ 1,400,000,000				$ 1,400,000,000		1,400,000,000
EQM | Unsecured Debt | 2019 EQM Term Loan Agreement
Debt Instrument
Principal			$ 300,000,000
EQM | Same-day swing line advances | EQM Credit Facility
Debt Instrument
Maximum borrowing capacity		$ 250,000,000		$ 250,000,000
EQM | Letter of credit | EQM Credit Facility
Debt Instrument
Maximum borrowing capacity		$ 400,000,000		400,000,000
Maximum amount of short term loans outstanding									0
EQM | Term Loans | EQM Credit Facility | Eurodollar | Minimum
Debt Instrument
Basis spread on variable rate		1.00%
EQM | Term Loans | EQM Credit Facility | Eurodollar | Maximum
Debt Instrument
Basis spread on variable rate		2.625%
EQM | Term Loans | 2019 EQM Term Loan Agreement | Base Rate | Minimum
Debt Instrument
Basis spread on variable rate		0.00%
EQM | Term Loans | 2019 EQM Term Loan Agreement | Base Rate | Maximum
Debt Instrument
Basis spread on variable rate		1.625%
Eureka Midstream, LLC | Eureka Credit Facility
Debt Instrument
Borrowings outstanding											$ 293,000,000
Eureka Midstream, LLC | Line of credit | Eureka Credit Facility
Debt Instrument
Maximum borrowing capacity		$ 400,000,000		$ 400,000,000
Additional available borrowings		$ 500,000,000
Maximum amount of short term loans outstanding							$ 293,000,000		323,000,000
Borrowings outstanding					303,000,000				303,000,000
Average daily balance of short term loans outstanding					$ 310,000,000	$ 293,000,000		$ 285,000,000	$ 300,000,000
Weighted average annual interest rate					2.40%	4.30%		4.30%	2.60%

[1] Includes aggregate borrowings outstanding on the Amended EQM Credit Facility (as defined in Note 9) as of September 30, 2020. As of December 31, 2019, the Company had aggregate borrowings outstanding of approximately $610 million and $293 million on the Amended EQM Credit Facility and the Eureka Credit Facility, respectively. The Company had no borrowings outstanding under the Equitrans Midstream Credit Facility as of December 31, 2019. See Note 9 for further detail.

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Debt - Eureka Credit Facility (Details) - Eureka Midstream, LLC - Eureka Credit Facility - USD ($)		3 Months Ended			6 Months Ended	9 Months Ended
	Oct. 31, 2018	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2019	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument
Borrowings outstanding							$ 293,000,000
Line of credit
Debt Instrument
Maximum borrowing capacity	$ 400,000,000
Additional available borrowings	$ 500,000,000
Borrowings outstanding		$ 303,000,000				$ 303,000,000
Maximum amount of short term loans outstanding				$ 293,000,000		323,000,000
Average daily balance of short term loans outstanding		$ 310,000,000	$ 293,000,000		$ 285,000,000	$ 300,000,000
Weighted average annual interest rate		2.40%	4.30%		4.30%	2.60%
Payment commitment fees		$ 100,000	$ 100,000		$ 200,000	$ 400,000

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Debt - 2020 Senior Notes (Details) - EQM Senior notes	3 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 17, 2020
6.00% Senior Notes Due July 1, 2025
Debt Instrument
Principal	$ 700,000,000
Interest rate	6.00%
6.50% Senior Note Due July 1, 2027
Debt Instrument
Principal	$ 900,000,000
Interest rate	6.50%
2020 Senior Notes
Debt Instrument
Net proceeds from offering	$ 1,576,100,000
Discount	20,000,000.0
Debt issuance costs	$ 3,900,000
Redemption percentage rate		1.01

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Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Gain on derivative instrument	$ 21.0	$ 37.7
EQM | Fair Value | Level 3 | EES
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Preferred interest	127.0	127.0	$ 126.0
EQM | Carrying Value | Level 3 | EES
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Preferred interest	106.3	106.3	110.0
EQM Senior notes | EQM | Fair Value | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Long-term debt	5,139.0	5,139.0	3,421.0
EQM Senior notes | EQM | Carrying Value | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Long-term debt	5,043.0	5,043.0	3,462.0
Equitrans Midstream Term Loans | Term Loans | Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Long-term debt			595.0
Equitrans Midstream Term Loans | Term Loans | Carrying Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Long-term debt			$ 568.0
Henry Hub cash payment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, at fair value	89.2	89.2
Henry Hub cash payment | Other current assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, at fair value	35.3	35.3
Henry Hub cash payment | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, at fair value	$ 53.9	$ 53.9

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Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended					9 Months Ended
		Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Class of Stock
Net income		$ 168,439	$ 189,560	$ (61,489)	$ 130,480	$ 199,566	$ 501,457	$ 268,557
Less: Net income (loss) attributable to noncontrolling interests (excluding EQM Series A Preferred Units)		3,973		4,336			210,765	203,562
Less: Preferred dividends	[1]	14,628		0			44,132	0
Net income (loss) attributable to Equitrans Midstream common shareholders		$ 149,838		$ (65,825)			$ 246,560	$ 64,995
Weighted average common shares outstanding - basic (in shares)		432,773,000		254,915,000			314,411,000	254,868,000
Dilutive securities (in shares)		48,000		0				19,000
Weighted average common stock outstanding - diluted (in shares)		432,821,000		254,915,000			314,411,000	254,887,000
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders - basic (in dollars per share)	[2]	$ 0.35		$ (0.26)			$ 0.78	$ 0.26
Earnings (loss) per share of common stock attributable to Equitrans Midstream common shareholders - diluted (in dollars per share)	[2]	$ 0.35		$ (0.26)			$ 0.78	$ 0.25
Potentially dilutive securities (in shares)		30,099,000		45,000			11,995,000
EQM Merger | Series A Preferred Units
Class of Stock
Premium recognized on redemption							$ 27,300
Series A Preferred Units
Class of Stock
Less: Net income (loss) attributable to noncontrolling interests (excluding EQM Series A Preferred Units)		$ 3,973		$ (44,144)			163,406	$ 155,082
Less: EQM Series A Preferred Units interest in net income		0		48,480			47,359	48,480
Equitrans Preferred Shares
Class of Stock
Less: Preferred dividends		$ 14,628		$ 0			$ 44,132	$ 0

[1] See Notes 2 and 11 for disclosures regarding the Equitrans Midstream Preferred Shares (as defined in Note 1)

[2] See Note 11 for disclosure regarding the Company's calculation of net income per share of common stock (basic and diluted).

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Income Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Effective tax rate	14.40%	(3.30%)	14.00%	14.60%