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Lines of Credit | 12 Months Ended
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Dec. 31, 2021
Debt Disclosure [Abstract] |
Lines of Credit | Lines of Credit 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, 2021 and 2020 are as follows:
|  |  | 2021 |  | 2020
| Maturity Date |  | Line Limit |  | Amounts Outstanding |  | Unused Portion |  | Amounts Outstanding
SJWC credit agreement (a) | December 31, 2023 |  | $ | 140,000 |  |  | — |  |  | 140,000 |  |  | 80,000 |
CTWS credit agreement | December 14, 2023 |  | 75,000 |  |  | 22,996 |  |  | 52,004 |  |  | 55,094 |
CTWS credit agreement | May 15, 2025 |  | 40,000 |  |  | 40,000 |  |  | — |  |  | 40,000 |
SJWTX, Inc. credit agreement (b) | December 31, 2023 |  | 5,000 |  |  | — |  |  | 5,000 |  |  | — |
|  |  | $ | 260,000 |  |  | 62,996 |  |  | 197,004 |  |  | 175,094 |
___________________________________ (a)Credit agreement also provides for a letter of credit sublimit of $15,000. (b)Credit agreement also provides for a letter of credit sublimit of $1,000. On April 23, 2021, SJWC closed its $140,000 line of credit agreement which was set to mature on June 1, 2021, and entered into a new $140,000 credit agreement (“SJWC Credit Agreement”) with JPMorgan Chase Bank, N.A., as the lender (the “Lender”). The SJWC Credit Agreement provides an unsecured credit facility with a letter of credit sublimit of $15,000. Proceeds of borrowings under the SJWC Credit Agreement may be used to refinance existing debt, for working capital, and for general corporate purposes. The new SJWC Credit Agreement has a maturity date of December 31, 2023. The line of credit bears interest at variable rates. Also on April 23, 2021, SJW Group, as guarantor, and CLWSC closed its $5,000 line of credit agreement which was set to mature on June 1, 2021, and entered into a new $5,000 credit agreement (“SJWTX Credit Agreement”) with the Lender. The SJWTX Credit Agreement provides an unsecured credit facility with a letter of credit sublimit of $1,000. The new SJWTX Credit Agreement has a maturity date of December 31, 2023. Cost of borrowing on the lines of credit averaged 1.32% and 1.78% as of December 31, 2021 and 2020, respectively. All of SJW Group’s and subsidiaries lines of credit contain customary representations, warranties and events of default, as well as certain restrictive covenants customary for facilities of this type, including restrictions on indebtedness, liens, acquisitions and investments, restricted payments, asset sales, and fundamental changes. The lines of credit also include certain customary financial covenants such as a funded debt to capitalization ratio and a minimum interest coverage ratio. As of December 31, 2021, SJW Group and its subsidiaries were in compliance with all covenants on the lines of credit.

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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