Exhibit 23.2

Consent of Independent Auditors

We consent to the incorporation by reference in the following Registration Statements:

•Registration Statement (Form S-8 No. 333-231258) pertaining to the Equitrans Midstream Corporation Employee Savings Plan,

•Registration Statement (Form S-8 No. 333-228338) pertaining to the Equitrans Midstream Corporation Employee Savings Plan,

•Registration Statement (Form S-3 No. 333-234522) pertaining to the registration of Common stock, Preferred stock and Debt securities Offered by the Company and Common Stock Offered by the Selling Shareholders,

•Registration Statement (Form S-3 No. 333-239828) pertaining to the registration of Common Stock and Preferred Stock Offered by the Selling Shareholders,

•Registration Statement (Form S-8 No. 333-228337) pertaining to the Equitrans Midstream Corporation 2018 Long-Term Incentive Plan,

•Registration Statement (Form S-8 No. 333-228340) pertaining to the Equitrans Midstream Corporation Directors’ Deferred Compensation Plan,

•Registration Statement (Form S-8 No. 333-239228) pertaining to the Equitrans Midstream Corporation 2018 Long-Term Incentive Plan, and

•Registration Statement (Form S-3 No. 333-255597) pertaining to the Equitrans Midstream Corporation 2018 Dividend Reinvestment and Stock Purchase Plan;

of our report dated February 23, 2021, with respect to the financial statements of Mountain Valley Pipeline, LLC – Series A included in the Annual Report (Form 10-K) of Equitrans Midstream Corporation for the year ended December 31, 2021.

/s/ Ernst & Young LLP    

Pittsburgh, Pennsylvania

February 23, 2022