Lines of Credit (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Schedule of Line of Credit Facilities

A summary of the line of credit agreements as of December 31, 2025 and 2024 are as follows:

		2025				2024
	Maturity Date	Line Limit		Amounts Outstanding	Unused Portion	Amounts Outstanding
Syndicated credit agreement:	September 12, 2030
H2O America		$	50,000	11,000	39,000	3,000
SJWC		165,000		45,000	120,000	44,000
CTWS		—		—	—	30,000
CWC		80,000		13,000	67,000	—
MWC		25,000		—	25,000	—
SJWTX		30,000		16,000	14,000	—
Total syndicated credit agreement		350,000		85,000	265,000	77,000
SJWC credit agreement	June 11, 2026	10,000		—	10,000	—
CTWS credit agreement	August 2, 2028	10,000		1,834	8,166	2,124
CTWS credit agreement (1)	May 15, 2025	—		—	—	40,000
		$	370,000	86,834	283,166	119,124

(1) CTWS repaid the outstanding balance under this credit agreement and concurrently terminated this credit agreement.