General (Tables)

6 Months Ended

Jun. 30, 2025

Accounting Policies [Abstract]

Schedule of H2O America's Revenue Components

H2O America’s revenue components are as follows:

	Three months ended June 30,			Six months ended June 30,
	2025		2024	2025		2024
Revenue from contracts with customers	$	197,777	173,106	$	362,640	323,114
Alternative revenue programs, net	1,759		1,314	2,351		(523)
Other balancing and memorandum accounts and regulatory mechanisms, net	(2,288)		977	(988)		413
Rental income	1,007		777	1,851		2,552
	$	198,255	176,174	$	365,854	325,556

Schedule of Nonutility Properties

The major components of nonutility properties as of June 30, 2025 and December 31, 2024, are as follows: 

	June 30, 2025		December 31, 2024
Land	$	915	915
Buildings and improvements	399		399
Subtotal	1,314		1,314
Less: accumulated depreciation	99		98
Total	$	1,215	1,216

Schedule of Recently Issued Accounting Standards

The recently issued accounting standards that have not yet been adopted by the company as of June 30, 2025 are as follows:

Standard	Description	Date of Adoption	Application	Effect on the Condensed Consolidated Financial Statements
Accounting Standards Update (“ASU”) 2023-09 “Improvements to Income Tax Disclosures”	The ASU amends certain income tax disclosure requirements, including adding requirements to present the reconciliation of income tax expense computed at the statutory rate to actual income tax expense using both percentages and amounts and providing a disaggregation of income taxes paid. Further, certain disclosures are eliminated, including the current requirement to disclose information on changes in unrecognized tax benefits in the next 12 months.	H2O America will adopt the ASU beginning with its annual financial statements for the year ending December 31, 2025.	Prospective, with retrospective application also permitted.	H2O America is currently evaluating the requirements of ASU 2023-09.
ASU 2024-03 “Disaggregation of Income Statement Expenses”	The ASU requires disclosure, in the notes to the financial statements, of specified information about certain costs and expenses. The ASU requires disclosure of purchases of inventory, employee compensation, depreciation, and intangible asset amortization in interim and annual reporting periods. Further, other amounts already required to be disclosed in accordance with current U.S. GAAP would be included in the same disclosure as the other disaggregation requirements. Additionally, the ASU requires qualitative descriptions of amounts remaining in relevant expense captions that are not separately disaggregated quantitatively as well as disclosure of selling expenses in annual periods and an entity’s definition of selling expenses.	The ASU is effective for H2O America for its annual financial statements for the year ending December 31, 2027 and for interim reporting periods for the year ending December 31, 2028. Early adoption is permitted.	Prospective, with retrospective application also permitted.	H2O America is currently evaluating the requirements of ASU 2024-03.