SJW (SJW) 10-Q 1 May 23 2023 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2023	Apr. 25, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	1-8966
Entity Registrant Name	SJW GROUP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0066628
Entity Address, Address Line One	110 West Taylor Street,
Entity Address, City or Town	San Jose,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95110
City Area Code	(408)
Local Phone Number	279-7800
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	SJW
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		31,427,284
Entity Central Index Key	0000766829
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
REVENUE	$ 137,296	$ 124,302
Production Expenses:
Purchased water	22,418	19,217
Power	2,199	3,080
Groundwater extraction charges	10,359	13,928
Other production expenses	12,043	10,123
Total production expenses	47,019	46,348
Administrative and general	24,344	24,205
Maintenance	6,058	6,695
Property taxes and other non-income taxes	8,401	8,309
Depreciation and amortization	26,296	27,606
Gain on sale of nonutility properties	0	(5,450)
Total operating expense	112,118	107,713
OPERATING INCOME	25,178	16,589
OTHER (EXPENSE) INCOME:
Interest on long-term debt and other interest expense	(15,772)	(13,729)
Pension non-service cost	(64)	949
Other, net	3,266	995
Income before income taxes	12,608	4,804
Provision for income taxes	1,078	1,067
NET INCOME	11,530	3,737
Other comprehensive income (loss), net	93	(181)
COMPREHENSIVE INCOME	$ 11,623	$ 3,556
EARNINGS PER SHARE
Basic (usd per share)	$ 0.37	$ 0.12
Diluted (usd per share)	0.37	0.12
DIVIDENDS PER SHARE (usd per share)	$ 0.38	$ 0.36
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (shares)	30,936,476	30,224,135
Diluted (shares)	31,040,897	30,335,974

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Utility plant:
Land	$ 40,820	$ 39,982
Depreciable plant and equipment	3,706,176	3,661,285
Construction in progress	121,309	116,851
Intangible assets	35,947	35,959
Total utility plant	3,904,252	3,854,077
Less accumulated depreciation and amortization	1,250,101	1,223,760
Net utility plant	2,654,151	2,630,317
Real estate investments and nonutility properties	1,388	58,033
Less accumulated depreciation and amortization	190	17,158
Net real estate investments and nonutility properties	1,198	40,875
Cash and cash equivalents:
Cash	23,333	12,344
Accounts receivable:
Customers, net of allowances for uncollectible accounts of $5,851 and $5,753 on March 31, 2023 and December 31, 2022, respectively	56,468	59,172
Other	5,145	5,560
Accrued unbilled utility revenue	40,437	45,722
Assets held for sale	40,850	0
Prepaid expenses	11,380	9,753
Current regulatory assets, net	10,019	16,068
Other current assets	6,216	6,095
Total current assets	193,848	154,714
OTHER ASSETS:
Net regulatory assets, less current portion	127,339	127,275
Investments	15,923	14,819
Goodwill	640,311	640,311
Other	19,728	24,313
Total other assets	803,301	806,718
Total assets	3,652,498	3,632,624
Stockholders’ equity:
Common stock, $0.001 par value; authorized 70,000,000 shares; issued and outstanding shares 31,427,124 on March 31, 2023 and 30,801,912 on December 31, 2022	31	31
Additional paid-in capital	692,742	651,004
Retained earnings	458,142	458,356
Accumulated other comprehensive income	1,570	1,477
Total stockholders’ equity	1,152,485	1,110,868
Long-term debt, less current portion	1,520,362	1,491,965
Capitalization, long-term debt and equity	2,672,847	2,602,833
CURRENT LIABILITIES:
Lines of credit	72,433	159,578
Current portion of long-term debt	44,274	4,360
Accrued groundwater extraction charges, purchased water and power	11,739	19,707
Accounts payable	25,974	29,581
Accrued interest	19,071	13,907
Accrued payroll	9,076	11,908
Income tax payable	4,608	2,696
Other current liabilities	25,790	22,913
Total current liabilities	212,965	264,650
DEFERRED INCOME TAXES	220,111	218,155
ADVANCES FOR CONSTRUCTION	137,668	137,696
CONTRIBUTIONS IN AID OF CONSTRUCTION	327,016	323,668
POSTRETIREMENT BENEFIT PLANS	55,914	59,738
OTHER NONCURRENT LIABILITIES	25,977	25,884
COMMITMENTS AND CONTINGENCIES
Total capitalization and liabilities	$ 3,652,498	$ 3,632,624

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Allowance for uncollectible accounts	$ 5,851	$ 5,753
CAPITALIZATION:
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (shares)	70,000,000	70,000,000
Common stock, shares issued (shares)	31,427,124	30,801,912
Common stock, shares outstanding (shares)	31,427,124	30,801,912

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2021		30,181,348
Beginning balance at Dec. 31, 2021	$ 1,034,519	$ 30	$ 606,392	$ 428,260	$ (163)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,737			3,737
Unrealized gain (loss) on investment, net of taxes	(181)				(181)
Stock-based compensation	1,532		1,552	(20)
Issuance of restricted and deferred stock units (in shares)		37,879
Issuance of restricted and deferred stock units	(1,269)		(1,269)
Employee stock purchase plan (in shares)		17,918
Employee stock purchase plan	1,049		1,049
Common stock issuance, net of costs	(87)		(87)
Dividends paid	(10,882)			(10,882)
Ending balance (in shares) at Mar. 31, 2022		30,237,145
Ending balance at Mar. 31, 2022	$ 1,028,418	$ 30	607,637	421,095	(344)
Beginning balance (in shares) at Dec. 31, 2022	30,801,912	30,801,912
Beginning balance at Dec. 31, 2022	$ 1,110,868	$ 31	651,004	458,356	1,477
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,530			11,530
Unrealized gain (loss) on investment, net of taxes	93				93
Stock-based compensation	1,177		1,199	(22)
Issuance of restricted and deferred stock units (in shares)		38,776
Issuance of restricted and deferred stock units	(1,538)		(1,538)
Employee stock purchase plan (in shares)		16,410
Employee stock purchase plan	1,080		1,080
Common stock issuance, net of costs (in shares)		570,026
Common stock issuance, net of costs	40,997		40,997
Dividends paid	$ (11,722)			(11,722)
Ending balance (in shares) at Mar. 31, 2023	31,427,124	31,427,124
Ending balance at Mar. 31, 2023	$ 1,152,485	$ 31	$ 692,742	$ 458,142	$ 1,570

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Unrealized income (loss) on investment, tax expense (benefit)	$ 0	$ 67
Dividends per share (usd per share)	$ 0.38	$ 0.36

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
OPERATING ACTIVITIES:
Net income	$ 11,530	$ 3,737
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,842	28,081
Deferred income taxes	1,052	2,264
Stock-based compensation	1,199	1,552
Allowance for equity funds used during construction	(180)	(510)
Gain on sale of nonutility property	0	(5,450)
Changes in operating assets and liabilities:
Accounts receivable and accrued unbilled utility revenue	8,177	4,311
Accounts payable and other current liabilities	(650)	(1,635)
Accrued groundwater extraction charges, purchased water and power	(7,968)	2,140
Tax receivable and payable, and other accrued taxes	1,727	1,135
Postretirement benefits	1,667	1,230
Regulatory assets and liabilities excluding income tax temporary differences, net and postretirement benefits	8,367	5,124
Other changes, net	(1,156)	3,315
NET CASH PROVIDED BY OPERATING ACTIVITIES	50,607	45,294
INVESTING ACTIVITIES:
Company-funded	(52,384)	(43,727)
Contributions in aid of construction	(2,703)	(4,782)
Payments to retire utility plant, net of salvage	(167)	(1,087)
Other changes, net	225	154
NET CASH USED IN INVESTING ACTIVITIES	(55,029)	(49,442)
FINANCING ACTIVITIES:
Borrowings on line of credit	12,238	15,377
Repayments on line of credit	(99,383)	(2,375)
Long-term borrowings	70,000	0
Repayments of long-term borrowings	(956)	(1,172)
Issuance of common stock, net of issuance costs	40,997	0
Dividends paid	(11,722)	(10,882)
Receipts of advances and contributions in aid of construction	5,597	10,044
Refunds of advances for construction	(589)	(595)
Other changes, net	(771)	(279)
NET CASH PROVIDED BY FINANCING ACTIVITIES	15,411	10,118
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	10,989	5,970
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD	12,344	12,119
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	23,333	18,089
LESS RESTRICTED CASH, END OF PERIOD	0	602
CASH AND CASH EQUIVALENTS, END OF PERIOD	23,333	17,487
Cash paid during the period for:
Interest	12,062	11,127
Income taxes	198	165
Supplemental disclosure of non-cash activities:
Accrued payables for additions to utility plant	19,906	20,472
Utility property installed by developers	$ 656	$ 546

General

General	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
General	General In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments (consisting only of normal, recurring adjustments) necessary for a fair presentation of the results for the interim periods. The unaudited interim financial information has been prepared in accordance with accounting principles generally accepted in the United States of America and in accordance with the instructions for Form 10-Q and Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission. The Notes to Consolidated Financial Statements in SJW Group’s 2022 Annual Report on Form 10-K should be read with the accompanying unaudited condensed consolidated financial statements. SJW Group is a holding company with five wholly-owned subsidiaries: San Jose Water Company (“SJWC”), SJWNE LLC, SJWTX, Inc., SJW Land Company, and SJWTX Holdings, Inc. SJWNE LLC is the holding company for Connecticut Water Service, Inc. (“CTWS”) whose wholly-subsidiaries are The Connecticut Water Company (“Connecticut Water”), The Maine Water Company (“Maine Water”), New England Water Utility Services, Inc. (“NEWUS”), and Chester Realty, Inc. SJWC, Connecticut Water, SJWTX, Inc. doing business as The Texas Water Company (“Texas Water”), Maine Water and NEWUS are referred to as “Water Utility Services”. SJW Land Company and Chester Realty, Inc. are collectively referred to as “Real Estate Services.” Revenue Water sales are seasonal in nature and influenced by weather conditions. The timing of precipitation and climatic conditions can cause seasonal water consumption by customers to vary significantly. Due to the seasonal nature of the water business, the operating results for interim periods are not indicative of the operating results for a 12-month period. Revenue is generally higher in the warm, dry summer months when water usage and sales are greater, and lower in the winter months when cooler temperatures and increased precipitation curtail water usage resulting in lower sales. The major streams of revenue for SJW Group are as follows: Three months ended March 31, 2023 2022 Revenue from contracts with customers $ 135,836 121,777 Alternative revenue programs, net (1,391) (1,927) Other balancing and memorandum accounts, net 1,795 2,430 Other regulatory mechanisms, net (391) 666 Rental income 1,447 1,356 $ 137,296 124,302 Real Estate Investments and Nonutility Properties The major components of real estate investments and nonutility properties as of March 31, 2023, and December 31, 2022, are as follows: March 31, December 31, Land $ 918 12,615 Buildings and improvements 470 45,418 Subtotal 1,388 58,033 Less: accumulated depreciation and amortization 190 17,158 Total $ 1,198 40,875 In March 2023, SJW Land Company entered into a broker agreement to sell its warehouse buildings and land property located in Knoxville, Tennessee. The company reclassified the Tennessee properties from held-and-used to held-for-sale at March 31, 2023. The company’s intention is to complete the sale of these assets within a twelve month period. The company recorded the Tennessee properties at the lower of their carrying value or estimated fair value less cost to sell, and also stopped recording depreciation on assets held for sale. The company's broker provided the estimated fair value of the Tennessee properties and we subtracted the estimated costs to sell from that calculated fair value. The resulting net fair value of the Tennessee properties exceeded their carrying value, and accordingly no impairment was recorded. The sale of the Tennessee properties does not represent a strategic shift that has or will have a major effect on SJW Group; therefore, the sale does not qualify for treatment as a discontinued operation. The Tennessee warehouse buildings and land property is included in SJW Group’s “Real Estate Services” reportable segment in Note 9 , “Segment and Non-Tariffed Business Reporting.” The following represents the major components of the Tennessee warehouse building and land property recorded in assets held-for-sale on the condensed consolidated balance sheets as of March 31, 2023: March 31, Land $ 13,170 Buildings and improvements 44,950 Subtotal 58,120 Less: accumulated depreciation and amortization 17,270 Total $ 40,850 On February 15, 2022, the California Public Utilities Commission (“CPUC”) review on a SJWC nonutility property sold in October 2021 was completed and the deferred gain of $5,442 was recognized as gain on sale in the first quarter of 2022. Fair Value Measurement The following instruments are not measured at fair value on SJW Group’s condensed consolidated balance sheets as of March 31, 2023, but require disclosure of their fair values: cash and cash equivalents, accounts receivable and accounts payable. The estimated fair value of such instruments as of March 31, 2023, approximates their carrying value as reported on the condensed consolidated balance sheets. There have been no changes in valuation techniques during the three months ended March 31, 2023. The fair value of these instruments would be categorized as Level 2 in the fair value hierarchy, with the exception of cash and cash equivalents, which would be categorized as Level 1. The fair value of SJW Group’s long-term debt was approximately $1,383,468 and $1,294,354 as of March 31, 2023, and December 31, 2022, respectively, and was determined using a discounted cash flow analysis, based on the current rates for similar financial instruments of the same duration and creditworthiness of the company. The book value of long-term debt was $1,564,636 and $1,496,325 as of March 31, 2023, and December 31, 2022, respectively. The fair value of long-term debt would be categorized as Level 2 in the fair value hierarchy. CTWS’s additional retirement benefits under the supplemental executive retirement plans and retirement contracts are funded by investment assets held by a Rabbi Trust. The fair value of the money market funds, mutual funds and fixed income investments in the Rabbi Trust was $2,848 and $2,809 as of March 31, 2023, and December 31, 2022, respectively, and are categorized as Level 1 in the fair value hierarchy. Earnings per Share

Regulatory Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2023
Regulated Operations [Abstract]
Regulatory Matters	Regulatory Matters Regulatory assets, net are comprised of the following as of March 31, 2023, and December 31, 2022: March 31, 2023 December 31, 2022 Regulatory assets: Income tax temporary differences, net $ 46,601 43,434 Postretirement pensions and other postretirement benefits 31,021 31,493 Business combinations debt premium, net 16,761 17,396 Monterey Water Revenue Adjustment Mechanism (“MWRAM”) 14,171 10,864 Water Conservation Memorandum Account (“WCMA”) (7,150) (5,039) 2022 General Rate Case Interim Memorandum Account 18,716 20,650 Cost recovery accounts 11,308 16,545 All other balancing and memorandum accounts 3,267 2,749 Water Revenue Adjustment (“WRA”) (7,283) (4,488) Other, net 9,946 9,739 Total regulatory assets, net in Condensed Consolidated Balance Sheets 137,358 143,343 Less: current regulatory assets, net 10,019 16,068 Total regulatory assets, net, less current portion $ 127,339 127,275 SJWC has established balancing accounts for the purpose of tracking the under-collection or over-collection associated with expense changes and revenue authorized by the CPUC to offset those expense changes. In 2022, SJWC’s general rate case decision approved the use of the Full Cost Balancing Account to track the water supply costs and energy consumption. The MWRAM balancing account tracks the difference between the revenue received for actual metered sales through the tiered volumetric rate and the revenue that would have been received with the same actual metered sales if a uniform rate would have been in effect. SJWC also maintains memorandum accounts to track revenue impacts due to catastrophic events, certain unforeseen water quality expenses related to new federal and state water quality standards, energy efficiency, water conservation, water tariffs, and other approved activities or as directed by the CPUC. The WCMA allows SJWC to track lost revenue, net of related water costs, associated with reduced sales due to water conservation and associated calls for water use reductions. SJWC records the lost revenue captured in the WCMA balancing accounts. Drought surcharges collected are used to offset the revenue losses tracked in the WCMA. All balancing accounts and memorandum accounts not included for recovery or refund in the current general rate case will be reviewed by the CPUC in SJWC’s next general rate case or at the time an individual account balance reaches a threshold of 2% of authorized revenue, whichever occurs first. Connecticut Water has established WRA, a decoupling mechanism, to mitigate risk associated with changes in demand. The WRA is used to reconcile actual water demands with the demands projected in the most recent general rate case and allows the company to implement a surcharge or surcredit as necessary to recover or refund the revenues approved in the general rate case. The WRA allows the company to defer, as a regulatory asset or liability, the amount by which actual revenues deviate from the revenues allowed in the most recent general rate proceedings. As of March 31, 2023, and December 31, 2022, SJW Group’s regulatory assets, net, not earning a return primarily included postretirement pensions and the unfunded amount of other medical benefits, and business combination debt premiums, net. The total amount of regulatory assets, net not earning a return at March 31, 2023, and December 31, 2022, either by interest on the regulatory asset/liability or as a component of rate base at the allowed rate of return was $51,002 and $52,066, respectively.

Capitalization

Capitalization	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Capitalization	Capitalization In March 2023, SJW Group entered into an Amendment No. 1 to the equity distribution agreement (the “Equity Distribution Agreement”), dated November 17, 2021, between the Company and J.P. Morgan Securities LLC, Janney Montgomery Scott LLC, RBC Capital Markets, LLC and Wells Fargo Securities, LLC (each a “Sales Agent” and, collectively, the “Sales Agents”), pursuant to which the Company increased the aggregate gross sales price of shares of the Company’s common stock, $0.001 par value per share, that may be sold under the Equity Distribution Agreement from $100,000 to $240,000. For the three months ended March 31, 2023, SJW Group issued and sold a total of 547,820 shares of common stock with a weighted average price of $76.10 per share and received approximately $40,997 in net proceeds under the Equity Distribution Agreement. Since the inception of the Equity Distribution Agreement, SJW Group has issued and sold 1,432,671 shares of common stock with a weighted average price of $74.46 for a total net proceeds of $104,429 and has $133,323 remaining

Bank Borrowings and Long-Term L

Bank Borrowings and Long-Term Liabilities	3 Months Ended
	Mar. 31, 2023
Debt Disclosure [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 has received advance deposit payments from its customers and developers on certain construction projects. The refunds of the advance deposit payments constitute an obligation of the respective entities. Long-term Financing Agreements

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended March 31, 2023, and 2022, income tax expense was $1,078 and $1,067, respectively. The effective consolidated income tax rates were 9% and 22% for the three months ended March 31, 2023 and 2022, respectively. The lower effective tax rate for the three months ended March 31, 2023, was primarily due to discrete tax items. SJW Group unrecognized tax benefits, before the impact of deductions of state taxes, excluding interest and penalties, of approximately $9,203 and $9,004 as of March 31, 2023, and December 31, 2022, respectively. SJW Group currently does not expect uncertain tax positions to change significantly over the next 12 months, except in the case of a lapse of the statute of limitations.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and ContingenciesSJW Group is subject to ordinary routine litigation incidental to its business. There are no pending legal proceedings to which SJW Group or any of its subsidiaries is a party, or to which any of its properties is the subject, that are expected to have a material effect on SJW Group’s business, financial position, results of operations or cash flows.

Benefit Plans

Benefit Plans	3 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Benefit Plans	Benefit PlansSJW Group maintains noncontributory defined benefit pension plans for its eligible employees. SJWC and CTWS employees hired before March 31, 2008, and January 1, 2009, respectively, are entitled to benefits under the pension plans based on the employee’s years of service and compensation. For SJWC employees hired on or after March 31, 2008, benefits are determined using a cash balance formula based upon compensation credits and interest credits for each employee. Starting in 2023, Texas Water employees are also eligible to participate under SJWC’s cash balance plan. Certain CTWS employees hired before March 1, 2012, and covered by a plan merged into the CTWS plan in 2013 are also entitled to benefits based on the employee’s years of service and compensation. CTWS employees hired on or after January 1, 2009, are entitled to an additional 1.5% of eligible compensation to their company sponsored savings plan. SJW Group does not have multi-employer plans. In addition, senior management hired before March 31, 2008 for SJWC and January 1, 2009 for CTWS, are eligible to receive additional retirement benefits under supplemental executive retirement plans and retirement contracts. SJWC’s senior management hired on or after March 31, 2008, are eligible to receive additional retirement benefits under SJWC’s Cash Balance Executive Supplemental Retirement Plan. The supplemental retirement plans and Cash Balance Executive Supplemental Retirement Plan are non-qualified plans in which only senior management and other designated members of management may participate. SJW Group also provides health care and life insurance benefits for retired employees under employer-sponsored postretirement benefits that are not pension plans. The components of net periodic benefit costs for the defined benefit plans and other postretirement benefits for the three months ended March 31, 2023, and 2022 are as follows: Three months ended March 31, 2023 2022 Service cost $ 2,052 2,652 Interest cost 3,874 2,860 Expected return on assets (4,286) (5,043) Unrecognized actuarial loss 466 1,164 Amortization of prior service cost 4 4 Total $ 2,110 1,637 In 2023, SJW Group expects to make required and discretionary cash contributions of up to $8,120 to the pension plans and other postretirement benefits. For the three months ended March 31, 2023, SJW Group has made no contributions to such plans.

Equity Plans

Equity Plans	3 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Equity Plans	Equity Plans The Incentive Plan allows SJW Group to provide employees, non-employee board members or the board of directors of any parent or subsidiary, consultants, and other independent advisors who provide services to the company or any parent or subsidiary the opportunity to acquire an equity interest in SJW Group. SJW Group also maintains stock plans in connection with its acquisition of CTWS which are no longer granting new stock awards. In addition, shares are issued to employees under the ESPP that was approved by SJW Group stockholders. As of March 31, 2023, 160,381 shares are issuable upon the vesting of outstanding restricted stock units and deferred restricted stock units and an additional 573,558 shares are available for award issuances under the Incentive Plan. On April 26, 2023, SJW Group adopted the successor plans for the Incentive Plan and ESPP (collectively, the “Predecessor Plans”) to replace the Predecessor Plans. The Incentive Plan terminated on April 23, 2023 and ESPP will terminate on July 31, 2023. The 2023 Long-Term Incentive Plan reserves for a total of 1,142,000 shares of SJW Group’s common stock for issuance to employees, non-employee board members or the board of directors of any parent or subsidiary, consultants, and other independent advisors who provide services to the SJW Group and its subsidiaries. The 2023 Employee Stock Purchase Plan reserves for a total of 500,000 shares of SJW Group’s common stock for issuance for eligible employees to purchase common stock at a discount through accumulated payroll deductions. Remaining reserves for both of the Predecessor Plans will be terminated with the adoption of the successor plans. A summary of compensation costs charged to income and proceeds from the exercise of restricted stock and similar instruments that are recorded to additional paid-in capital and common stock, by award type, are presented below for the three months ended March 31, 2023, and 2022: Three months ended March 31, 2023 2022 Compensation costs charged to income: ESPP $ 191 185 Restricted stock and deferred restricted stock 1,008 1,367 Total compensation costs charged to income $ 1,199 1,552 ESPP proceeds $ 1,080 1,049 Restricted Stock and Deferred Restricted Stock For the three months ended March 31, 2023, and 2022, SJW Group granted under the Incentive Plan 27,732 and 31,399, respectively, one year and three year service-based restricted stock awards with a weighted-average grant date fair value per unit of $77.88 and $68.37, respectively. For the three months ended March 31, 2023, and 2022, SJW Group granted under the Incentive Plan 31,345 and 33,621 target units, respectively, performance-based and market-based restricted stock awards granted with a weighted-average grant date fair value per unit of $80.05 and $70.35, respectively. Based upon actual attainment relative to the target performance metric, the number of shares issuable can range between 0% to 150% of the target number of shares for performance-based restricted stock awards, or between 0% and 200% of the target number of shares for market-based restricted stock awards. As of March 31, 2023, the total unrecognized compensation costs related to restricted and deferred restricted stock plans was $7,537. This cost is expected to be recognized over a weighted-average period of 2.26 years. Employee Stock Purchase Plan SJW Group’s recorded expenses for its ESPP were $90 and $93 for the three months ended March 31, 2023 and 2022, respectively. The total unrecognized compensation costs related to the semi-annual offering period that ends July 31, 2023, for the ESPP is approximately $133. This cost is expected to be recognized during the second and third quarters of 2023.

Segment and Non-Tariffed Busine

Segment and Non-Tariffed Business Reporting	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Segment and Non-Tariffed Business Reporting	Segment and Non-Tariffed Business ReportingSJW Group is a holding company with five subsidiaries: (i) SJWC, a water utility operation with both regulated and non-tariffed businesses, (ii) Texas Water, a regulated water and non-tariffed wastewater utility located in Canyon Lake, Texas, and its consolidated non-tariffed variable interest entity, Acequia Water Supply Corporation, (iii) SJW Land Company and its consolidated variable interest entity, 444 West Santa Clara Street, L.P., which operated commercial building rentals, (iv) SJWNE LLC, a holding company for CTWS and its subsidiaries, Connecticut Water, Maine Water, NEWUS and Chester Realty, Inc., and (v) SJWTX Holdings, Inc. which was formed for the purpose of effecting a corporate reorganization of the water utility operations in Texas. SJW Group’s reportable segments have been determined based on information used by the chief operating decision maker. SJW Group’s chief operating decision maker includes the Chairman, President and Chief Executive Officer, and his executive staff. The first segment provides water utility and utility-related services to its customers through SJW Group’s subsidiaries, SJWC, Connecticut Water, Texas Water, Maine Water, and NEWUS together referred to as “Water Utility Services”. The second segment consists of property management and investment activity conducted by SJW Land Company and Chester Realty, Inc., referred to as “Real Estate Services.” The following tables set forth information relating to SJW Group’s reportable segments and distribution of regulated and non-tariffed business activities within the reportable segments. Certain allocated assets, such as goodwill, revenue and expenses have been included in the reportable segment amounts. Other business activity of SJW Group not included in the reportable segments is included in the “All Other” category. For Three Months Ended March 31, 2023 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 133,272 2,577 1,447 — 133,272 4,024 137,296 Operating expense 108,867 1,414 899 938 108,867 3,251 112,118 Operating income (loss) 24,405 1,163 548 (938) 24,405 773 25,178 Net income (loss) 13,222 618 425 (2,735) 13,222 (1,692) 11,530 Depreciation and amortization 25,686 84 303 223 25,686 610 26,296 Interest on long-term debt and other interest expense 10,547 — — 5,225 10,547 5,225 15,772 Provision (benefit) for income taxes 2,724 323 142 (2,111) 2,724 (1,646) 1,078 Assets $ 3,552,767 3,967 43,660 52,104 3,552,767 99,731 3,652,498 For Three Months Ended March 31, 2022 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 120,518 2,428 1,356 — 120,518 3,784 124,302 Operating expense 101,451 3,979 909 1,374 101,451 6,262 107,713 Operating income (loss) 19,067 (1,551) 447 (1,374) 19,067 (2,478) 16,589 Net income (loss) 9,715 (1,317) 308 (4,969) 9,715 (5,978) 3,737 Depreciation and amortization 24,511 2,572 300 223 24,511 3,095 27,606 Interest on long-term debt and other interest expense 8,763 — — 4,966 8,763 4,966 13,729 Provision (benefit) for income taxes 2,020 (437) 103 (619) 2,020 (953) 1,067 Assets $ 3,403,006 4,139 44,361 60,370 3,403,006 108,870 3,511,876 ____________________

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Acquisitions	AcquisitionsOn January 13, 2023, Texas Water reached agreements to acquire KT Water Development Ltd. and KT Water Resource L.P. for the purchase price of $7,338 and $53,500, respectively. KT Water Development Ltd. is an investor-owned water utility providing water to approximately 1,725 people through over 570 service connections in the Rockwall Ranch subdivision in southern Comal County, Texas. KT Water Resources L.P. is a privately-held company formed to develop wholesale water supplies for the fast-growing utilities of Comal County, Texas. The transaction is expected to close in the third quarter of 2023, pending the Public Utility Commission of Texas approval of the KT Water Development Ltd. acquisition.

General (Policies)

General (Policies)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Accounting	The unaudited interim financial information has been prepared in accordance with accounting principles generally accepted in the United States of America and in accordance with the instructions for Form 10-Q and Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission. The Notes to Consolidated Financial Statements in SJW Group’s 2022 Annual Report on Form 10-K should be read with the accompanying unaudited condensed consolidated financial statements.
Revenue	Revenue Water sales are seasonal in nature and influenced by weather conditions. The timing of precipitation and climatic conditions can cause seasonal water consumption by customers to vary significantly. Due to the seasonal nature of the water business, the operating results for interim periods are not indicative of the operating results for a 12-month period. Revenue is generally higher in the warm, dry summer months when water usage and sales are greater, and lower in the winter months when cooler temperatures and increased precipitation curtail water usage resulting in lower sales.
Fair Value Measurement	Fair Value MeasurementThe following instruments are not measured at fair value on SJW Group’s condensed consolidated balance sheets as of March 31, 2023, but require disclosure of their fair values: cash and cash equivalents, accounts receivable and accounts payable. The estimated fair value of such instruments as of March 31, 2023, approximates their carrying value as reported on the condensed consolidated balance sheets. There have been no changes in valuation techniques during the three months ended March 31, 2023. The fair value of these instruments would be categorized as Level 2 in the fair value hierarchy, with the exception of cash and cash equivalents, which would be categorized as Level 1.
Earnings per Share	Earnings per ShareBasic earnings per share is calculated using income available to common stockholders, divided by the weighted average number of shares outstanding during the period. Diluted earnings per share is calculated using income available to common stockholders divided by the weighted average number of shares of common stock including both shares outstanding and shares potentially issuable in connection with restricted common stock awards under SJW Group’s Long-Term Incentive Plan (as amended, the “Incentive Plan”), shares potentially issuable under the performance stock plans assumed through the business combination with CTWS, and shares potentially issuable under the Employee Stock Purchase Plan (“ESPP”).

General (Tables)

General (Tables)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Schedule of Major Streams of Revenue	The major streams of revenue for SJW Group are as follows: Three months ended March 31, 2023 2022 Revenue from contracts with customers $ 135,836 121,777 Alternative revenue programs, net (1,391) (1,927) Other balancing and memorandum accounts, net 1,795 2,430 Other regulatory mechanisms, net (391) 666 Rental income 1,447 1,356 $ 137,296 124,302
Schedule of Real Estate Investments and Nonutility Properties	The major components of real estate investments and nonutility properties as of March 31, 2023, and December 31, 2022, are as follows: March 31, December 31, Land $ 918 12,615 Buildings and improvements 470 45,418 Subtotal 1,388 58,033 Less: accumulated depreciation and amortization 190 17,158 Total $ 1,198 40,875 March 31, Land $ 13,170 Buildings and improvements 44,950 Subtotal 58,120 Less: accumulated depreciation and amortization 17,270 Total $ 40,850

Regulatory Matters (Tables)

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2023
Regulated Operations [Abstract]
Schedule of Regulatory Assets, Net	Regulatory assets, net are comprised of the following as of March 31, 2023, and December 31, 2022: March 31, 2023 December 31, 2022 Regulatory assets: Income tax temporary differences, net $ 46,601 43,434 Postretirement pensions and other postretirement benefits 31,021 31,493 Business combinations debt premium, net 16,761 17,396 Monterey Water Revenue Adjustment Mechanism (“MWRAM”) 14,171 10,864 Water Conservation Memorandum Account (“WCMA”) (7,150) (5,039) 2022 General Rate Case Interim Memorandum Account 18,716 20,650 Cost recovery accounts 11,308 16,545 All other balancing and memorandum accounts 3,267 2,749 Water Revenue Adjustment (“WRA”) (7,283) (4,488) Other, net 9,946 9,739 Total regulatory assets, net in Condensed Consolidated Balance Sheets 137,358 143,343 Less: current regulatory assets, net 10,019 16,068 Total regulatory assets, net, less current portion $ 127,339 127,275

Benefit Plans (Tables)

Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Schedule of Net Benefit Costs	The components of net periodic benefit costs for the defined benefit plans and other postretirement benefits for the three months ended March 31, 2023, and 2022 are as follows: Three months ended March 31, 2023 2022 Service cost $ 2,052 2,652 Interest cost 3,874 2,860 Expected return on assets (4,286) (5,043) Unrecognized actuarial loss 466 1,164 Amortization of prior service cost 4 4 Total $ 2,110 1,637

Equity Plans (Tables)

Equity Plans (Tables)	3 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Schedule of Compensation Costs Charged to Income and Proceeds from the Exercise of Any Restricted Stock and Similar Instruments that are Recorded to Additional Paid-In Capital and Common Stock, by Award Type	A summary of compensation costs charged to income and proceeds from the exercise of restricted stock and similar instruments that are recorded to additional paid-in capital and common stock, by award type, are presented below for the three months ended March 31, 2023, and 2022: Three months ended March 31, 2023 2022 Compensation costs charged to income: ESPP $ 191 185 Restricted stock and deferred restricted stock 1,008 1,367 Total compensation costs charged to income $ 1,199 1,552 ESPP proceeds $ 1,080 1,049

Segment and Non-Tariffed Busi_2

Segment and Non-Tariffed Business Reporting (Tables)	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables set forth information relating to SJW Group’s reportable segments and distribution of regulated and non-tariffed business activities within the reportable segments. Certain allocated assets, such as goodwill, revenue and expenses have been included in the reportable segment amounts. Other business activity of SJW Group not included in the reportable segments is included in the “All Other” category. For Three Months Ended March 31, 2023 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 133,272 2,577 1,447 — 133,272 4,024 137,296 Operating expense 108,867 1,414 899 938 108,867 3,251 112,118 Operating income (loss) 24,405 1,163 548 (938) 24,405 773 25,178 Net income (loss) 13,222 618 425 (2,735) 13,222 (1,692) 11,530 Depreciation and amortization 25,686 84 303 223 25,686 610 26,296 Interest on long-term debt and other interest expense 10,547 — — 5,225 10,547 5,225 15,772 Provision (benefit) for income taxes 2,724 323 142 (2,111) 2,724 (1,646) 1,078 Assets $ 3,552,767 3,967 43,660 52,104 3,552,767 99,731 3,652,498 For Three Months Ended March 31, 2022 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 120,518 2,428 1,356 — 120,518 3,784 124,302 Operating expense 101,451 3,979 909 1,374 101,451 6,262 107,713 Operating income (loss) 19,067 (1,551) 447 (1,374) 19,067 (2,478) 16,589 Net income (loss) 9,715 (1,317) 308 (4,969) 9,715 (5,978) 3,737 Depreciation and amortization 24,511 2,572 300 223 24,511 3,095 27,606 Interest on long-term debt and other interest expense 8,763 — — 4,966 8,763 4,966 13,729 Provision (benefit) for income taxes 2,020 (437) 103 (619) 2,020 (953) 1,067 Assets $ 3,403,006 4,139 44,361 60,370 3,403,006 108,870 3,511,876 ____________________

General - Narrative (Details)

General - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 subsidiary	Mar. 31, 2022 USD ($)
Accounting Policies [Abstract]
Number of subsidiaries | subsidiary	5
Gain on sale of real estate investments | $		$ 5,442

General - Major Streams of Reve

General - Major Streams of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accounting Policies [Abstract]
Revenue from contracts with customers	$ 135,836	$ 121,777
Alternative revenue programs, net	(1,391)	(1,927)
Other balancing and memorandum accounts, net	1,795	2,430
Other regulatory mechanisms, net	(391)	666
Rental income	1,447	1,356
Total revenues	$ 137,296	$ 124,302

General - Schedule of Real Esta

General - Schedule of Real Estate Investments and Nonutility Properties (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Land	$ 918	$ 12,615
Buildings and improvements	470	45,418
Subtotal	1,388	58,033
Less accumulated depreciation and amortization	190	17,158
Net real estate investments and nonutility properties	1,198	$ 40,875
Warehouse Building
Schedule of Investments [Line Items]
Land	13,170
Buildings and improvements	44,950
Subtotal	58,120
Less accumulated depreciation and amortization	17,270
Net real estate investments and nonutility properties	$ 40,850

General - Fair Value Measuremen

General - Fair Value Measurement (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, book value	$ 1,564,636	$ 1,496,325
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	1,383,468	1,294,354
Fair Value, Inputs, Level 1 | Supplemental Employee Retirement Plan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of plan assets	$ 2,848	$ 2,809

General - Earnings per Share (D

General - Earnings per Share (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive restricted common stock units excluded from computation of earnings per share (in shares)	8,855	10,860

Regulatory Matters - Regulatory

Regulatory Matters - Regulatory Assets, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	$ 137,358	$ 143,343
Less: current regulatory assets, net	10,019	16,068
Total regulatory assets, net, less current portion	127,339	127,275
Income tax temporary differences, net
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	46,601	43,434
Postretirement pensions and other postretirement benefits
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	31,021	31,493
Business combinations debt premium, net
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	16,761	17,396
Monterey Water Revenue Adjustment Mechanism (“MWRAM”)
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	14,171	10,864
Water Conservation Memorandum Account (“WCMA”)
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	(7,150)	(5,039)
2022 General Rate Case Interim Memorandum Account
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	18,716	20,650
Cost recovery accounts
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	11,308	16,545
All other balancing and memorandum accounts
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	3,267	2,749
Water Revenue Adjustment (“WRA”)
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	(7,283)	(4,488)
Other, net
Regulatory Assets [Line Items]
Total regulatory assets, net in Condensed Consolidated Balance Sheets	$ 9,946	$ 9,739

Regulatory Matters - Narrative

Regulatory Matters - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Regulated Operations [Abstract]
Authorized revenue, threshold percentage	2%
Regulatory assets, net not earning a return	$ 51,002	$ 52,066

Capitalization (Details)

Capitalization (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	16 Months Ended
	Mar. 31, 2023	Mar. 31, 2023	Feb. 28, 2023	Dec. 31, 2022
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (usd per share)	$ 0.001	$ 0.001		$ 0.001
At The Market Offering Member
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Aggregate gross sales price (up to)	$ 240,000	$ 240,000	$ 100,000
Shares issued in offering (shares)	547,820	1,432,671
Weighted average price per share (usd per share)	$ 76.10	$ 74.46
Net proceeds from stock offering	$ 40,997	$ 104,429
Total equity distribution	$ 133,323	$ 133,323

Bank Borrowings and Long-Term_2

Bank Borrowings and Long-Term Liabilities (Details) - San Jose Water Company - 4.85% Senior Note, Series P - Senior Notes $ in Thousands	Jul. 31, 2022 USD ($)
Debt Instrument [Line Items]
Aggregate principal amount	$ 70,000
Interest rate	4.85%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ 1,078	$ 1,067
Effective consolidated income tax rate	9%	22%
Unrecognized tax benefits	$ 9,203		$ 9,004

Benefit Plans - Narrative (Deta

Benefit Plans - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer plan contributions	$ 0
Maximum
Defined Benefit Plan Disclosure [Line Items]
Estimated employer contributions for the remainder of fiscal year	$ 8,120
CTWS Employees
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	1.50%

Benefit Plans - Schedule of Net

Benefit Plans - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Retirement Benefits [Abstract]
Service cost	$ 2,052	$ 2,652
Interest cost	3,874	2,860
Expected return on assets	(4,286)	(5,043)
Unrecognized actuarial loss	466	1,164
Amortization of prior service cost	4	4
Total	$ 2,110	$ 1,637

Equity Plans - Narrative (Detai

Equity Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Apr. 26, 2023
Restricted stock and deferred restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 7,537
Recognition period for unrecognized compensation cost	2 years 3 months 3 days
Performance Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage	0%
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage	150%
Market-based RSU | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage	0%
Market-based RSU | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage	200%
Incentive Plan | Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining shares available for issuance (in shares)			1,142,000
Incentive Plan | Restricted stock and deferred restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable upon exercise of incentive plan awards (in shares)	160,381
Remaining shares available for issuance (in shares)	573,558
Number of equity instruments granted (in shares)	27,732	31,399
Service-based restricted stock vesting period	1 year	3 years
Grant date fair value of equity instruments granted (usd per share)	$ 77.88	$ 68.37
Incentive Plan | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments granted (in shares)	31,345	33,621
Grant date fair value of equity instruments granted (usd per share)	$ 80.05	$ 70.35
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 133
Plan expense	$ 90	$ 93
ESPP | Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining shares available for issuance (in shares)			500,000

Equity Plans - Schedule of Comp

Equity Plans - Schedule of Compensation Costs Charged to Income and Proceeds from the Exercise of Any Restricted Stock and Similar Instruments that are Recorded to Additional Paid-In Capital and Common Stock, by Award Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	$ 1,199	$ 1,552
Restricted stock and deferred restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	1,008	1,367
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	191	185
ESPP proceeds	$ 1,080	$ 1,049

Segment and Non-Tariffed Busi_3

Segment and Non-Tariffed Business Reporting - Narrative (Details)	3 Months Ended
	Mar. 31, 2023 subsidiary
Segment Reporting [Abstract]
Number of subsidiaries	5

Segment and Non-Tariffed Busi_4

Segment and Non-Tariffed Business Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Operating revenue	$ 137,296	$ 124,302
Operating expense	112,118	107,713
Operating income (loss)	25,178	16,589
Net income (loss)	11,530	3,737
Depreciation and amortization	26,296	27,606
Interest on long-term debt and other interest expense	15,772	13,729
Provision (benefit) for income taxes	1,078	1,067
Assets	3,652,498	3,511,876	$ 3,632,624
Water Utility Services | Regulated
Segment Reporting Information [Line Items]
Operating revenue	133,272	120,518
Operating expense	108,867	101,451
Operating income (loss)	24,405	19,067
Net income (loss)	13,222	9,715
Depreciation and amortization	25,686	24,511
Interest on long-term debt and other interest expense	10,547	8,763
Provision (benefit) for income taxes	2,724	2,020
Assets	3,552,767	3,403,006
Water Utility Services | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	2,577	2,428
Operating expense	1,414	3,979
Operating income (loss)	1,163	(1,551)
Net income (loss)	618	(1,317)
Depreciation and amortization	84	2,572
Interest on long-term debt and other interest expense	0	0
Provision (benefit) for income taxes	323	(437)
Assets	3,967	4,139
Real Estate Services | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	1,447	1,356
Operating expense	899	909
Operating income (loss)	548	447
Net income (loss)	425	308
Depreciation and amortization	303	300
Interest on long-term debt and other interest expense	0	0
Provision (benefit) for income taxes	142	103
Assets	43,660	44,361
All Other | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	0	0
Operating expense	938	1,374
Operating income (loss)	(938)	(1,374)
Net income (loss)	(2,735)	(4,969)
Depreciation and amortization	223	223
Interest on long-term debt and other interest expense	5,225	4,966
Provision (benefit) for income taxes	(2,111)	(619)
Assets	52,104	60,370
SJW Group | Regulated
Segment Reporting Information [Line Items]
Operating revenue	133,272	120,518
Operating expense	108,867	101,451
Operating income (loss)	24,405	19,067
Net income (loss)	13,222	9,715
Depreciation and amortization	25,686	24,511
Interest on long-term debt and other interest expense	10,547	8,763
Provision (benefit) for income taxes	2,724	2,020
Assets	3,552,767	3,403,006
SJW Group | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	4,024	3,784
Operating expense	3,251	6,262
Operating income (loss)	773	(2,478)
Net income (loss)	(1,692)	(5,978)
Depreciation and amortization	610	3,095
Interest on long-term debt and other interest expense	5,225	4,966
Provision (benefit) for income taxes	(1,646)	(953)
Assets	$ 99,731	$ 108,870

Acquisitions (Details)

Acquisitions (Details) - Texas Water $ in Thousands	Jan. 13, 2023 USD ($) people serviceConnection
KT Water Development Ltd
Business Acquisition [Line Items]
Business combination, purchase price	$ 7,338
Number of people served from acquisition | people	1,725
KT Water Development Ltd | Southern Comal County, Texas
Business Acquisition [Line Items]
Number of service connections from acquisition | serviceConnection	570
KT Water Resource L. P.
Business Acquisition [Line Items]
Business combination, purchase price	$ 53,500