Bank Borrowings and Long-Term Liabilities	9 Months Ended
Bank Borrowings and Long-Term Liabilities	Sep. 30, 2021
Long-Term Liabilities and Bank Borrowings [Abstract]
Bank Borrowings and Long-Term Liabilities	Bank Borrowings and Long-Term Liabilities SJW Group’s contractual obligations and commitments include senior notes, bank term loans, revenue bonds, state revolving fund loans and other obligations. Water Utility Services have received advance deposit payments from its customers on certain construction projects and the refunds of the advance deposit payments constitute an obligation of the respective subsidiaries. Lines of Credit 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. The SJWC Credit Agreement contains customary representations, warranties and events of default, as well as restrictive covenants customary for facilities of this type. The SJWC Credit Agreement also includes certain customary financial covenants such as a funded debt to capitalization ratio. 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. Long-Term Debt On March 2, 2021, Maine Water entered into a credit agreement with a commercial bank, pursuant to an existing master loan agreement under which the commercial bank issued Maine Water a promissory note on the same date with an aggregate principal amount of $17,000 and a fixed interest rate of 3.89%, due March 1, 2041. The notes are unsecured obligations of Maine Water. Interest is payable quarterly in arrears on the 20th day of January, April, July and October of each year. The promissory note contains customary representations and warranties. Under the promissory note, Maine Water is required to comply with certain customary affirmative and negative covenants for as long as the notes are outstanding. The notes are also subject to customary events of default, the occurrence of which may result in all of the notes then outstanding becoming immediately due and payable. Proceeds from the borrowing were received on March 18, 2021. On May 13, 2021, CLWSC entered into a master credit agreement and promissory note with a commercial bank under which it entered into a borrowing agreement for an aggregate principal amount not to exceed $30,000, of which $20,000 was advanced at the closing date. The borrowing carries a fixed interest rate of 4.01% due on March 20, 2041. The remaining aggregate principal amount of the promissory note is to be advanced at the discretion of CLWSC before the maturity date. The notes are unsecured obligations of CLWSC. Interest is payable quarterly in arrears on the 20th day of January, April, July and October of each year. The promissory note contains customary representations and warranties. Under the promissory note, CLWSC is required to comply with certain customary affirmative and negative covenants for as long as the notes are outstanding. The notes are also subject to customary events of default, the occurrence of which may result in all of the notes then outstanding becoming immediately due and payable. On June 25, 2021, SJWC entered into a note purchase agreement with certain affiliates of New York Life Insurance (collectively the “Purchasers”), pursuant to which the company sold an aggregate principal amount of $50,000 of its 3.00% Senior Notes, Series N (“Series N Notes”) to the Purchasers. The Series N Notes are unsecured obligations of SJWC and are due on June 25, 2051. Interest is payable semi-annually in arrears on January 1st and July 1st of each year. The note purchase agreement contains customary affirmative and negative covenants for as long as the Series N Notes are outstanding. The Series N Notes are also subject to customary events of default, the occurrence of which may result in all of the Series N Notes then outstanding becoming immediately due and payable. The closing occurred simultaneously with the signing of the note purchase agreement. On August 4, 2021, Connecticut Water entered into a note purchase agreement with certain affiliates of Metropolitan Life Insurance Company, New York Life Insurance Company, the Northwestern Mutual Life Insurance Company and Pacific Life Insurance Company, pursuant to which Connecticut Water sold on August 4, 2021, an aggregate principal amount of $50,000 of its 3.07% Senior Notes, Series 2021A, due 2051 (the “2021A Notes”) and will sell on December 1, 2021, an aggregate principal amount of $50,000 of its 3.10% Senior Notes, Series 2021B, due 2051 (the “2021B Notes” and together with the 2021A Notes, the “CWC Notes”). The closing on December 1, 2021, is subject to customary closing conditions. The CWC Notes are unsecured obligations of Connecticut Water, with the 2021A Notes due on June 1, 2051, and the 2021B Notes due on December 1, 2051. Interest on the CWC Notes is payable semi-annually in arrears on June 1st and December 1st of each year. The note purchase agreement contains customary representations and warranties. Connecticut Water has agreed to customary affirmative and negative covenants for as long as the CWC Notes are outstanding. The CWC Notes are also subject to customary events of default, the occurrence of which may result in all of the CWC Notes then outstanding becoming immediately due and payable. The proceeds from the sale of the CWC Notes will be used to repay outstanding short and/or long-term borrowings, to fund Connecticut Water’s capital expenditures, and/or for other general corporate purposes. On August 4, 2021, SJWC entered into a note purchase agreement with the purchasers listed in the agreement, pursuant to which the company sold an aggregate principal amount of $50,000 of its 3.00% Senior Notes, Series O (“Series O Notes”), due December 1, 2051. The Series O Notes are unsecured obligations of SJWC. Interest is payable semi-annually in arrears on June 1st and December 1st of each year. The note purchase agreement contains customary affirmative and negative covenants for as long as the Series O Notes are outstanding. The Series O Notes are also subject to customary events of default, the occurrence of which may result in all of the Series O Notes then outstanding becoming immediately due and payable. The closing of the note purchase agreement is expected to occur on December 1, 2021.