Lines of Credit (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Schedule of Line of Credit Facilities

SJW Group and its subsidiaries have unsecured line of credit agreements where borrowings are used to refinance existing debt, for working capital, and for general corporate purposes. A summary of the line of agreements as of December 31, 2022 and 2021 are as follows:

		2022				2021
	Maturity Date	Line Limit		Amounts Outstanding	Unused Portion	Amounts Outstanding
Syndicated credit agreement:	August 2, 2027
SJW Group		$	50,000	—	50,000	—
SJWC		140,000		95,000	45,000	—
CTWS		90,000		20,000	70,000	—
SJWTX		20,000		—	20,000	—
Total syndicated credit agreement		300,000		115,000	185,000	—
CTWS credit agreement	December 14, 2023	10,000		4,578	5,422	22,996
CTWS credit agreement	May 15, 2025	40,000		40,000	—	40,000
		$	350,000	159,578	190,422	62,996