SJW (SJW) 10-Q 25 Jul 24 2024 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2024	Jul. 22, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-8966
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		32,711,600
Entity Central Index Key	0000766829
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Operating revenue	$ 176,174	$ 156,886	$ 325,556	$ 294,182
Production Expenses:
Purchased water	38,129	32,592	64,321	55,010
Power	2,737	2,379	5,164	4,578
Groundwater extraction charges	17,552	14,994	29,678	25,353
Other production expenses	12,052	11,921	23,101	23,964
Total production expenses	70,470	61,886	122,264	108,905
Administrative and general	20,468	23,527	46,256	47,871
Maintenance	7,881	6,298	14,568	12,356
Property taxes and other non-income taxes	8,419	7,896	17,249	16,297
Depreciation and amortization	28,366	26,121	56,736	52,417
Total operating expense	135,604	125,728	257,073	237,846
Operating income	40,570	31,158	68,483	56,336
Other (expense) income:
Interest on long-term debt and other interest expense	(18,294)	(16,397)	(35,878)	(32,169)
Pension non-service credit (cost)	939	(102)	1,889	(166)
Other, net	1,205	2,115	3,856	5,381
Income before income taxes	24,420	16,774	38,350	29,382
Provision for income taxes	3,724	(1,512)	5,955	(434)
Net income	20,696	18,286	32,395	29,816
Other comprehensive income (loss), net	0	9	(442)	102
Comprehensive income	$ 20,696	$ 18,295	$ 31,953	$ 29,918
Earnings per share
Basic (in usd per share)	$ 0.64	$ 0.58	$ 1	$ 0.96
Diluted (in usd per share)	0.64	0.58	1	0.95
Dividends per share (in usd per share)	$ 0.40	$ 0.38	$ 0.80	$ 0.76
Weighted average shares outstanding
Basic (in shares)	32,397,501	31,499,068	32,237,115	31,219,324
Diluted (in shares)	32,460,894	31,594,494	32,302,741	31,319,248

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Utility plant:
Land	$ 41,415	$ 41,415
Depreciable plant and equipment	4,077,009	3,967,911
Construction work in progress	159,084	106,980
Intangible assets	35,986	35,946
Total utility plant	4,313,494	4,152,252
Less accumulated depreciation and amortization	1,030,065	981,598
Net utility plant	3,283,429	3,170,654
Nonutility properties and real estate investments	13,376	13,350
Less accumulated depreciation and amortization	96	194
Net nonutility properties and real estate investments	13,280	13,156
Current assets:
Cash and cash equivalents	22,804	9,723
Accounts receivable:
Customers, net of allowances for uncollectible accounts of $802 and $6,551 on June 30, 2024 and December 31, 2023, respectively	70,238	67,870
Income tax	0	5,187
Other	5,584	3,684
Accrued unbilled utility revenue	57,822	49,543
Assets held for sale	0	40,850
Prepaid expenses	9,856	11,110
Current regulatory assets	1,057	4,276
Other current assets	5,818	6,146
Total current assets	173,179	198,389
Other assets:
Regulatory assets, less current portion	238,963	235,910
Investments	17,368	16,411
Postretirement benefit plans	36,816	33,794
Other intangible asset	28,386	28,386
Goodwill	640,311	640,311
Other	7,695	8,056
Total other assets	969,539	962,868
Total assets	4,439,427	4,345,067
Stockholders’ equity:
Common stock, $0.001 par value; authorized 70,000,000 shares; issued and outstanding shares 32,668,904 on June 30, 2024 and 32,023,004 on December 31, 2023	33	32
Additional paid-in capital	771,189	736,191
Retained earnings	502,037	495,383
Accumulated other comprehensive income	1,349	1,791
Total stockholders’ equity	1,274,608	1,233,397
Long-term debt, less current portion	1,549,587	1,526,699
Total capitalization	2,824,195	2,760,096
Current liabilities:
Lines of credit	217,495	171,500
Current portion of long-term debt	9,023	48,975
Accrued groundwater extraction charges, purchased water and power	32,581	24,479
Accounts payable	37,932	46,121
Accrued interest	15,582	15,816
Accrued payroll	10,683	12,229
Income tax payable	2,059	0
Current regulatory liabilities	1,930	3,059
Other current liabilities	22,848	20,795
Total current liabilities	350,133	342,974
Deferred income taxes	240,903	238,528
Advances for construction	144,087	146,582
Contributions in aid of construction	333,611	326,451
Postretirement benefit plans	47,516	46,836
Regulatory liabilities, less current portion	475,293	461,108
Other noncurrent liabilities	23,689	22,492
Commitments and contingencies
Total capitalization and liabilities	$ 4,439,427	$ 4,345,067

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Allowance for uncollectible accounts	$ 802	$ 6,551
Capitalization:
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	70,000,000	70,000,000
Common stock, shares issued (in shares)	32,668,904	32,023,004
Common stock, shares outstanding (in shares)	32,668,904	32,023,004

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, 2022		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
Ending balance at Mar. 31, 2023	1,152,485	$ 31	692,742	458,142	1,570
Beginning balance (in shares) at Dec. 31, 2022		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	29,816
Ending balance (in shares) at Jun. 30, 2023		31,731,030
Ending balance at Jun. 30, 2023	1,182,716	$ 32	716,642	464,464	1,578
Beginning balance (in shares) at Mar. 31, 2023		31,427,124
Beginning balance at Mar. 31, 2023	1,152,485	$ 31	692,742	458,142	1,570
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,286			18,286
Unrealized gain (loss) on investment, net of taxes	8				8
Stock-based compensation	1,122		1,139	(17)
Issuance of restricted and deferred stock units (in shares)		13,429
Issuance of restricted and deferred stock units	(20)		(20)
Common stock issuance, net of costs (in shares)		290,477
Common stock issuance, net of costs	22,782	$ 1	22,781
Dividends paid	(11,947)			(11,947)
Ending balance (in shares) at Jun. 30, 2023		31,731,030
Ending balance at Jun. 30, 2023	$ 1,182,716	$ 32	716,642	464,464	1,578
Beginning balance (in shares) at Dec. 31, 2023	32,023,004	32,023,004
Beginning balance at Dec. 31, 2023	$ 1,233,397	$ 32	736,191	495,383	1,791
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,699			11,699
Unrealized gain (loss) on investment, net of taxes	(442)				(442)
Stock-based compensation	1,529		1,538	(9)
Issuance of restricted and deferred stock units (in shares)		30,432
Issuance of restricted and deferred stock units	(1,215)		(1,215)
Employee stock purchase plan (in shares)		21,755
Employee stock purchase plan	1,101		1,101
Common stock issuance, net of costs (in shares)		126,025
Common stock issuance, net of costs	7,006		7,006
Dividends paid	(12,824)			(12,824)
Ending balance (in shares) at Mar. 31, 2024		32,201,216
Ending balance at Mar. 31, 2024	$ 1,240,251	$ 32	744,621	494,249	1,349
Beginning balance (in shares) at Dec. 31, 2023	32,023,004	32,023,004
Beginning balance at Dec. 31, 2023	$ 1,233,397	$ 32	736,191	495,383	1,791
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 32,395
Ending balance (in shares) at Jun. 30, 2024	32,668,904	32,668,904
Ending balance at Jun. 30, 2024	$ 1,274,608	$ 33	771,189	502,037	1,349
Beginning balance (in shares) at Mar. 31, 2024		32,201,216
Beginning balance at Mar. 31, 2024	1,240,251	$ 32	744,621	494,249	1,349
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,696			20,696
Stock-based compensation	1,267		1,275	(8)
Issuance of restricted and deferred stock units (in shares)		9,083
Issuance of restricted and deferred stock units	(2)		(2)
Common stock issuance, net of costs (in shares)		458,605
Common stock issuance, net of costs	25,296	$ 1	25,295
Dividends paid	$ (12,900)			(12,900)
Ending balance (in shares) at Jun. 30, 2024	32,668,904	32,668,904
Ending balance at Jun. 30, 2024	$ 1,274,608	$ 33	$ 771,189	$ 502,037	$ 1,349

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Unrealized gain (loss) on investment, tax expense (benefit)	$ (163)	$ (37)	$ 0
Dividends per share (in usd per share)	$ 0.40	$ 0.38	$ 0.38

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities:
Net income	$ 32,395	$ 29,816
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	57,847	53,510
Deferred income taxes	1,278	8,706
Stock-based compensation	2,813	2,338
Allowance for equity funds used during construction	(1,145)	(1,111)
Changes in operating assets and liabilities:
Accounts receivable and accrued unbilled utility revenue	(9,746)	(3,687)
Accounts payable and other current liabilities	(1,952)	(107)
Accrued groundwater extraction charges, purchased water and power	8,102	3,300
Tax receivable and payable, and other accrued taxes	3,617	(3,367)
Postretirement benefits	(1,080)	(628)
Regulatory assets and liabilities excluding cost of removal, income tax temporary differences, and postretirement benefits	8,621	12,142
Other changes, net	(218)	(3,548)
Net cash provided by operating activities	100,532	97,364
Investing activities:
Company-funded	(158,368)	(115,749)
Contributions in aid of construction	(11,779)	(9,287)
Cost to retire utility plant, net of salvage	(1,434)	(468)
Proceeds from sale of real estate investments	40,628	0
Other changes, net	(29)	125
Net cash used in investing activities	(130,982)	(125,379)
Financing activities:
Borrowings on line of credit	151,668	39,828
Repayments on line of credit	(106,556)	(116,095)
Long-term borrowings	25,000	70,000
Repayments of long-term borrowings	(41,488)	(1,560)
Issuance of common stock, net of issuance costs	32,302	63,779
Dividends paid	(25,724)	(23,669)
Receipts of advances and contributions in aid of construction	10,054	11,047
Refunds of advances for construction	(1,341)	(1,341)
Other changes, net	(384)	(844)
Net cash provided by financing activities	43,531	41,145
Net change in cash and cash equivalents	13,081	13,130
Cash and cash equivalents, beginning of period	9,723	12,344
Cash and cash equivalents, end of period	22,804	25,474
Cash paid during the period for:
Interest	38,100	31,656
Income taxes	702	655
Supplemental disclosure of non-cash activities:
Accrued payables for additions to utility plant	29,125	27,580
Utility property installed by developers	748	938
Proceeds receivable from sale of real estate investments	2,801	0
Accrued selling expenses on sale of real estate investments	$ 2,386	$ 0

General

General	6 Months Ended
	Jun. 30, 2024
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 2023 Annual Report on Form 10-K should be read in conjunction with the accompanying unaudited condensed consolidated financial statements. SJW Group is a holding company with four wholly owned subsidiaries: San Jose Water Company (“SJWC”), SJWTX Holdings, Inc., SJW Land Company, and SJWNE LLC. SJWTX Holdings, Inc., is a holding company for its wholly owned subsidiaries, SJWTX, Inc., doing business as The Texas Water Company (“TWC”), Texas Water Operation Services, LLC, (“TWOS”) and Texas Water Resources, LLC (“TWR”). SJWNE LLC is the holding company for Connecticut Water Service, Inc. (“CTWS”) whose wholly owned subsidiaries are The Connecticut Water Company (“CWC”), The Maine Water Company (“MWC”), New England Water Utility Services, Inc. (“NEWUS”), and Chester Realty, Inc. SJWC, CWC, TWC , TWOS, TWR, MWC 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. SJW Group’s revenue components are as follows: Three months ended June 30, Six months ended June 30, 2024 2023 2024 2023 Revenue from contracts with customers $ 173,106 159,724 $ 323,114 295,560 Alternative revenue programs, net 1,314 (2,204) (523) (3,595) Other balancing and memorandum accounts and regulatory mechanisms, net 977 (2,050) 413 (646) Rental income 777 1,416 2,552 2,863 $ 176,174 156,886 $ 325,556 294,182 Nonutility Properties and Real Estate Investments The major components of real estate investments and nonutility properties as of June 30, 2024 and December 31, 2023, are as follows: June 30, December 31, Land $ 4,134 4,137 Wholesale water supply assets 8,465 8,465 Buildings and improvements 777 748 Subtotal 13,376 13,350 Less: accumulated depreciation and amortization 96 194 Total $ 13,280 13,156 In March 2023, SJW Land Company entered into a broker agreement to sell its warehouse, office building, 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 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. SJW Group's broker provided the estimated fair value of the Tennessee properties. In April 2024, SJW Land Company completed the sale of a warehouse building of the Tennessee properties for $27,000. The pre-tax gain on the sale was $6,918. In June 2024, SJW Land Company completed the sale of an office building, land, and parking lot of the Tennessee properties for $17,000. The pre-tax loss on the sale was $7,827. The net pre-tax loss associated with these transactions for the three and six months ended June 30, 2024 was $909 and is included in the “Other, net” line on the condensed consolidated statements of comprehensive income. A portion of the proceeds from these sales totaling $2,801 is being held in escrow pending completion of certain post-closing obligations. As a result of these two transactions, the sale of the Tennessee properties is complete and the company does not have any other assets held for sale. 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 properties are 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 properties that were recorded in assets held-for-sale on the condensed consolidated balance sheets as of December 31, 2023: December 31, Land $ 13,170 Buildings and improvements 44,950 Subtotal 58,120 Less: accumulated depreciation and amortization 17,270 Total $ 40,850 Fair Value Measurement The following instruments are not measured at fair value on SJW Group’s condensed consolidated balance sheets as of June 30, 2024, 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 June 30, 2024 approximates their carrying value as reported on the condensed consolidated balance sheets. There have been no changes in valuation techniques during the three and six months ended June 30, 2024. 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 $1,335,706 and $1,394,412 as of June 30, 2024 and December 31, 2023, 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. Of the total fair value of long-term debt at June 30, 2024 and December 31, 2023, $1,319,532 and $1,378,683, respectively, would be categorized as Level 2 in the fair value hierarchy and $16,174 and $15,729, respectively, would be categorized as Level 3 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 $2,639 and $2,833 as of June 30, 2024 and December 31, 2023, respectively, and are categorized as Level 1 in the fair value hierarchy. Earnings per Share Basic 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 plans, shares potentially issuable under the performance stock plans assumed through the business combination with CTWS, and shares potentially issuable under SJW Group’s employee stock purchase plans. For the three months ended June 30, 2024 and 2023, 6,567 and 1,843 anti-dilutive restricted common stock units were excluded from the diluted earnings per share calculation, respectively. For the six months ended June 30, 2024 and 2023, 9,394 and 10,698 anti-dilutive restricted common stock units were excluded from the diluted earnings per share calculation, respectively. Accounts Receivable During the second quarter of 2024, SJW Group recorded a reduction to its allowance for credit losses of $7,822, of which $3,960 resulted in a reduction to regulatory assets and $3,862 was recorded through administrative and general expense ($2,782 net of tax or $0.09 per diluted share). New Accounting Standards The recently issued accounting standards that have not yet been adopted by the company as of June 30, 2024 are as follows: Standard Description Date of Adoption Application Effect on the Condensed Consolidated Financial Statements Accounting Standards Update (“ASU”) 2023-07 “Improvements to Reportable Segment Disclosures” The ASU requires disclosure of significant segment expenses, extends certain annual disclosures to interim periods, and additional qualitative disclosures regarding the chief operating decision maker. The ASU is effective for SJW Group beginning with its annual financial statements for the year ending December 31, 2024. Early adoption is permitted. Retrospective SJW Group is currently evaluating the requirements of ASU 2023-07. ASU 2023-09 “Improvements to Income Tax Disclosures” The ASU amends certain income tax disclosure requirements, including adding requirements to present the reconciliation of income tax expense computed at the statutory rate to actual income tax expense using both percentages and amounts and providing a disaggregation of income taxes paid. Further, certain disclosures are eliminated, including the current requirement to disclose information on changes in unrecognized tax benefits in the next 12 months. The ASU is effective for SJW Group beginning with its annual financial statements for the year ending December 31, 2025. Early adoption is permitted. Prospective, with retrospective application also permitted. SJW Group is currently evaluating the requirements of ASU 2023-09.

Regulatory Matters

Regulatory Matters	6 Months Ended
	Jun. 30, 2024
Regulated Operations [Abstract]
Regulatory Matters	Regulatory Matters Regulatory assets and liabilities are comprised of the following as of June 30, 2024 and December 31, 2023: June 30, 2024 December 31, 2023 Regulatory assets: Income tax temporary differences (a) $ 161,351 157,669 Unrecognized pensions and other postretirement benefits (b) 24,593 24,593 Business combinations debt premium (c) 13,584 14,855 Employee benefit costs (d) 6,407 9,815 Monterey Water Revenue Adjustment Mechanism (“MWRAM”) (e) 11,450 9,361 Customer Assistance Program (“CAP”) balancing account (f) 6,179 5,457 Catastrophic event memorandum accounts (“CEMA”) (g) 962 4,819 2022 general rate case interim memorandum account (h) 3,312 4,571 Water supply costs (i) — 583 Other (j) 12,182 8,463 Total regulatory assets 240,020 240,186 Less: current regulatory assets (k) 1,057 4,276 Total regulatory assets, less current portion $ 238,963 235,910 Regulatory liabilities: Cost of removal (l) 354,148 346,418 Future income tax benefits due to customers (m) 87,104 88,610 Unrecognized pensions and other postretirement benefits (b) 20,408 20,196 Revenue adjustment mechanisms (n) 6,104 5,536 Water supply costs (i) 6,105 — Other (o) 3,354 3,407 Total regulatory liabilities 477,223 464,167 Less: current regulatory liabilities (p) 1,930 3,059 Total regulatory liabilities, less current portion $ 475,293 461,108 ___________________________________ (a) Consists primarily of temporary income tax differences that are flowed through to customers, which will be recovered in future rates as these temporary differences reverse. The company expects to recover regulatory assets related to plant depreciation income tax temporary differences over the lives of the plant assets, which are between 4 to 100 years. (b) Represents actuarial losses and gains and prior service cost that have not yet been recognized as components of net periodic benefit cost for certain pension and other postretirement benefit plans. (c) Consists of debt fair value adjustments recognized through purchase accounting for the completed merger with CTWS in 2019. (d) Includes deferrals of pension and other postretirement benefit expense and cost of accrued benefits for vacation. (e) MWRAM is described in the following section. (f) Represents costs associated with SJWC’s CAP. (g) The California Public Utilities Commission (“CPUC”) has authorized water utilities to activate CEMA accounts in order to track savings and costs related to SJWC’s response to catastrophic events, which includes external labor and materials, increases in bad debt from suspension of shutoffs for non-payment, waived deposits and reconnection fees, and divergence from actual versus authorized usage. At December 31, 2023, balance primarily relates to increased bad debt expenses associated with SJWC’s response to COVID-19. (h) Represents the difference between revenues collected in interim rates in effect as of January 1, 2022 and revenues that would result from rates authorized in SJWC’s 2022 general rate case retroactive to January 1, 2022. (i) Reflects differences in actual water supply costs compared to amounts assumed in base rates, including applicable changes and variations in costs and quantities that affect the overall mix of the water supply. (j) Other includes other balancing and memorandum accounts and regulatory mechanisms, deferred costs for certain information technology activities, asset retirement obligations, tank painting, well reconditioning and rate case expenses. (k) As of June 30, 2024, primarily relates to the current portion of CWC’s deferred well redevelopment and rate case costs. As of December 31, 2023, primarily relates to the current portion of MWRAM. (l) Represents amounts collected in rates from customers for estimated costs to retire assets at the end of their expected useful lives before the costs are incurred. (m) On December 22, 2017 the Tax Cuts and Jobs Act of 2017 (the "Tax Act”) was signed into law. The Tax Act included a reduction in the federal income tax rate from 35% to 21%. The rate reduction was effective on January 1, 2018 and resulted in a regulatory liability for the excess deferred income taxes. The benefit of amortization of excess deferred income taxes flows back to the customers under current normalization rules and agreed upon methods with the commissions. (n) Consists of Water Rate Adjustment mechanism (“WRA”) and Water Conservation Memorandum Account (“ WCMA”), which are described in the following section. (o) Other includes other balancing and memorandum accounts, other regulatory mechanisms and accrued tank painting costs. (p) As of June 30, 2024 and December 31, 2023, primarily relates to the current portion of WRA. 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. SJWC has been authorized for 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 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, both mandatory and voluntary. SJWC records the lost revenue captured in the WCMA balancing accounts. Applicable drought surcharges collected are used to offset the revenue losses tracked in the WCMA. Mandatory water conservation requirements from Santa Clara Valley Water District (“Valley Water”) ended on April 11, 2023, which also ended SJWC’s Mandatory Conservation Plan, that included drought allocations and surcharges. On October 2, 2023, the CPUC approved the continuation of WCMA and Water Conservation Expense Memorandum Account under the voluntary call for conservation effective April 20, 2023. 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. CWC has been authorized by the Connecticut Public Utilities Regulatory Authority (“PURA”) to utilize a 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 sur-credit 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 June 30, 2024 and December 31, 2023, SJW Group’s regulatory assets not earning a return primarily included unrecognized pensions and other postretirement benefits and business combination debt premiums. The total amount of regulatory assets not earning a return at June 30, 2024 and December 31, 2023, either by interest on the regulatory asset or as a component of rate base at the allowed rate of return, was $41,960 and $43,141, respectively.

Capitalization

Capitalization	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Capitalization	Capitalization

Lines of Credit and Long-Term L

Lines of Credit and Long-Term Liabilities	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Lines of Credit and Long-Term Liabilities	Lines of Credit 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. Lines of Credit The weighted average interest rate on short-term borrowings outstanding at June 30, 2024, was 6.45% compared to 6.48% at December 31, 2023. Long-term Financing Agreements

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three and six months ended June 30, 2024, income tax expense was $3,724 and 5,955, respectively. Income tax benefit for the three and six months ended June 30, 2023 was $1,512 and $434, respectively. The effective consolidated income tax rates were 15% and (9)% for the three months ended June 30, 2024 and 2023, respectively, and 16% and (1)% for the six months ended June 30, 2024 and 2023, respectively. The higher effective tax rate for the three and six months ended June 30, 2024 was primarily due to the partial release of an uncertain tax position reserve in the second quarter of 2023 and other discrete tax items. SJW Group had unrecognized tax benefits, before the impact of deductions of state taxes, excluding interest and penalties, of approximately $4,630 and $4,511 as of June 30, 2024 and December 31, 2023, 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	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies SJW 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	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Benefit Plans	Benefit Plans SJW Group maintains noncontributory defined benefit pension plans for its eligible employees. SJWC employees hired before March 31, 2008 and CWC and MWC employees hired before January 1, 2009 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, TWC employees are also eligible to participate under SJWC’s cash balance plan. Certain employees hired before March 1, 2012, and covered by a plan merged into the CWC 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 CWC, 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 and six months ended June 30, 2024 and 2023 are as follows: Pension Benefits Other Benefits Three months ended June 30, 2024 2023 2024 2023 Service cost $ 1,666 1,892 $ 166 160 Interest cost 3,613 3,557 295 317 Expected return on assets (4,463) (4,069) (267) (217) Amortization of actuarial (gain) loss (18) 554 (161) (88) Amortization of prior service cost 4 4 — — Total $ 802 1,938 $ 33 172 Pension Benefits Other Benefits Six months ended June 30, 2024 2023 2024 2023 Service cost $ 3,331 3,784 $ 332 320 Interest cost 7,226 7,115 591 634 Expected return on assets (8,926) (8,138) (534) (434) Amortization of actuarial (gain) loss (35) 1,108 (322) (176) Amortization of prior service cost 7 7 — — Total $ 1,603 3,876 $ 67 344 In 2024, SJW Group expects to make required and discretionary cash contributions of up to $4,515 to the pension plans and other postretirement benefits. For the three and six months ended June 30, 2024, SJW Group has made $2,258 of contributions to such plans.

Equity Plans

Equity Plans	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Equity Plans	Equity Plans SJW Group’s long-term incentive plans 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 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 SJW Group’s employee stock purchase plan (“ESPP”). As of June 30, 2024, 192,750 shares are issuable upon the vesting of outstanding restricted stock units and deferred restricted stock units and an additional 1,034,642 shares are available for award issuances under the long-term incentive plans. A summary of compensation costs charged to income, by award type, and proceeds from the ESPP, are presented below for the three and six months ended June 30, 2024 and 2023: Three months ended June 30, Six months ended June 30, 2024 2023 2024 2023 Compensation costs charged to income: ESPP $ — — $ 195 191 Restricted stock and deferred restricted stock 1,275 1,139 2,618 2,147 Total compensation costs charged to income $ 1,275 1,139 $ 2,813 2,338 ESPP proceeds $ — — $ 1,101 1,080 Restricted Stock and Deferred Restricted Stock For the three months ended June 30, 2024 and 2023, SJW Group granted 24,692 and 9,610, respectively, one year and three year service-based restricted stock awards with a weighted average grant date fair value per unit of $50.04 and $75.28, respectively. For the six months ended June 30, 2024 and 2023, SJW Group granted 64,482 and 37,342, respectively, one year and three year service-based restricted stock awards with a weighted average grant date fair value per unit of $58.39 and $77.21, respectively. For the three months ended June 30, 2024, SJW Group granted 356 target units of performance-based and market-based restricted stock awards with a weighted average grant date fair value per unit of $52.90 and no performance-based or market-based restricted stock awards were granted in the same period in 2023. For the six months ended June 30, 2024 and 2023, SJW Group granted 45,763 and 31,345 target units, respectively, of performance-based and market-based restricted stock awards with a weighted average grant date fair value per unit of $55.60 and $80.05, 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 June 30, 2024, the total unrecognized compensation costs related to restricted and deferred restricted stock plans was $7,555. This cost is expected to be recognized over a weighted average period of 2.04 years. Employee Stock Purchase Plan SJW Group’s recorded expenses for its ESPP were $106 and $203 for the three and six months ended June 30, 2024, respectively, and $106 and $196 for the three and six months ended June 30, 2023, respectively. The total unrecognized compensation costs related to the semi-annual offering period that ends July 31, 2024, for the ESPP is approximately $35. This cost is expected to be recognized during the third quarter of 2024.

Segment and Non-Tariffed Busine

Segment and Non-Tariffed Business Reporting	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Segment and Non-Tariffed Business Reporting	Segment and Non-Tariffed Business Reporting SJW Group is a holding company with four subsidiaries: (i) SJWC, (ii) SJWTX Holdings, Inc., a holding company for TWC, its consolidated variable interest entity, Acequia Water Supply Corporation, TWOS and TWR, (iii) SJW Land Company, and (iv) SJWNE LLC, a holding company for CTWS and its subsidiaries, CWC, MWC, NEWUS and Chester Realty, Inc. The first segment provides water utility and utility-related services to its customers through SJW Group’s subsidiaries, SJWC, CWC, TWC, MWC, and NEWUS together referred to as “Water Utility Services.” Water Utility Services’ activities are water utility operations with both regulated and non-tariffed businesses. 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.” 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 executive staff reviews financial information presented on a consolidated basis that is accompanied by disaggregated information about operating revenue, net income and total assets, by subsidiary. 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 June 30, 2024 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 172,046 3,351 777 — 172,046 4,128 176,174 Operating expense 132,249 2,379 460 516 132,249 3,355 135,604 Operating income (loss) 39,797 972 317 (516) 39,797 773 40,570 Net income (loss) 23,956 498 (200) (3,558) 23,956 (3,260) 20,696 Depreciation and amortization 28,057 85 1 223 28,057 309 28,366 Interest on long-term debt and other interest expense 12,037 224 — 6,033 12,037 6,257 18,294 Provision (benefit) for income taxes $ 5,325 301 (68) (1,834) 5,325 (1,601) 3,724 For Three Months Ended June 30, 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 $ 152,525 2,945 1,416 — 152,525 4,361 156,886 Operating expense 122,678 1,789 661 600 122,678 3,050 125,728 Operating income (loss) 29,847 1,156 755 (600) 29,847 1,311 31,158 Net income (loss) 20,510 596 544 (3,364) 20,510 (2,224) 18,286 Depreciation and amortization 25,811 85 1 224 25,811 310 26,121 Interest on long-term debt and other interest expense 10,846 — — 5,551 10,846 5,551 16,397 Provision (benefit) for income taxes $ 102 320 243 (2,177) 102 (1,614) (1,512) For Six Months Ended June 30, 2024 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 316,961 6,043 2,552 — 316,961 8,595 325,556 Operating expense 250,030 3,989 1,186 1,868 250,030 7,043 257,073 Operating income (loss) 66,931 2,054 1,366 (1,868) 66,931 1,552 68,483 Net income (loss) 38,556 1,230 583 (7,974) 38,556 (6,161) 32,395 Depreciation and amortization 56,118 170 2 446 56,118 618 56,736 Interest on long-term debt and other interest expense 23,579 445 — 11,854 23,579 12,299 35,878 Provision (benefit) for income taxes $ 9,021 619 198 (3,883) 9,021 (3,066) 5,955 For Six Months Ended June 30, 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 $ 285,797 5,522 2,863 — 285,797 8,385 294,182 Operating expense 231,545 3,203 1,560 1,538 231,545 6,301 237,846 Operating income (loss) 54,252 2,319 1,303 (1,538) 54,252 2,084 56,336 Net income (loss) 33,732 1,214 969 (6,099) 33,732 (3,916) 29,816 Depreciation and amortization 51,497 169 304 447 51,497 920 52,417 Interest on long-term debt and other interest expense 21,393 — — 10,776 21,393 10,776 32,169 Provision (benefit) for income taxes $ 2,826 643 385 (4,288) 2,826 (3,260) (434) ____________________ (1) The “All Other” category for the three and six months ended June 30, 2024 and 2023, includes the accounts of SJW Group, SJWNE LLC, CTWS and SJWTX Holdings, Inc. on a stand-alone basis. SJW Group’s assets by segment are as follows: June 30, 2024 December 31, 2023 Water Utility Services: Regulated $ 4,321,187 4,199,172 Non-tariffed 43,032 43,532 Total water utility services 4,364,219 4,242,704 Real Estate Services 20,742 44,222 All Other 54,466 58,141 Total assets $ 4,439,427 4,345,067 Regulated $ 4,321,187 4,199,172 Non-tariffed 118,240 145,895 Total assets $ 4,439,427 4,345,067

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisitions	Acquisitions In January 2023, TWC reached an agreement to acquire KT Water Development Ltd. (“KT Water Development”) and SJWTX Holdings, Inc. reached an agreement to acquire KT Water Resources, L.P. (“KT Water Resources”). The agreement between SJWTX Holdings, Inc. and KT Water Resources was assigned to TWR prior to closing. KT Water Development was 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 was a wholesale groundwater resource supplier to KT Water Development formed to develop wholesale water supplies for the fast-growing utilities of Comal County, Texas. The Public Utility Commission of Texas (“PUCT”) approved the proposed KT Water Development acquisition on July 24, 2023. The acquisition of KT Water Resources did not require PUCT approval. Both transactions closed on August 14, 2023. Further information regarding each of the acquisitions is set forth below. KT Water Development The purchase price of KT Water Development was $7,338, all of which was cash, and was determined in accordance with a fair market value process defined under the Texas Water Code. The transaction was accounted for as a business combination in accordance with Accounting Standards Codification (“ASC”) Topic 805—“Business Combinations.” The transaction consideration was allocated to utility plant. The final purchase price allocation was completed during the quarter ended March 31, 2024, with no change from the preliminary purchase price allocation. Transaction costs were not material. The results of KT Water Development are included in SJW Group’s consolidated statements of comprehensive income since the acquisition date and were not material. Pro forma financial information has not been presented because the acquisition was not material to SJW Group’s consolidated financial statements. KT Water Resources The total purchase price of KT Water Resources of $39,891 and consisted of a $24,491 up-front cash payment and an obligation for a post-closing production payment with an acquisition date fair value of $15,400. Considering transaction costs of $170, the total cost of the acquisition was $40,061. The KT Water Resources acquisition was accounted for as an asset acquisition in accordance with ASC Topic 805. The total cost was allocated as follows based on the fair values of the assets acquired: $28,386 to other intangible asset, $11,684 to nonutility property, and $9 to other current liabilities. The other intangible asset represents indefinite life water rights. The nonutility property consists of wells, land, easements, and construction work in progress. The post-closing production payment represents an obligation to pay a total amount of $29,000 to the seller over a period up to 29 years. The repayment schedule is based on the quantity of groundwater produced from the acquired wells, subject to certain provisions in the purchase agreement. The fair value of the post-closing payment as of the acquisition date was determined by discounting forecasted repayments based on management’s estimates of future groundwater production. The difference between the fair value of $15,400 and the gross obligation of $29,000 was recorded as a debt discount and is being amortized as interest expense using the effective interest method over the life of the obligation. The post-closing production payment obligation is classified as long-term debt in the condensed consolidated balance sheets.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net income (loss)	$ 20,696	$ 11,699	$ 18,286	$ 11,530	$ 32,395	$ 29,816

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

General (Policies)

General (Policies)	6 Months Ended
	Jun. 30, 2024
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 2023 Annual Report on Form 10-K should be read in conjunction 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 Measurement
Earnings per Share	Earnings per Share
New Accounting Standards	New Accounting Standards The recently issued accounting standards that have not yet been adopted by the company as of June 30, 2024 are as follows: Standard Description Date of Adoption Application Effect on the Condensed Consolidated Financial Statements Accounting Standards Update (“ASU”) 2023-07 “Improvements to Reportable Segment Disclosures” The ASU requires disclosure of significant segment expenses, extends certain annual disclosures to interim periods, and additional qualitative disclosures regarding the chief operating decision maker. The ASU is effective for SJW Group beginning with its annual financial statements for the year ending December 31, 2024. Early adoption is permitted. Retrospective SJW Group is currently evaluating the requirements of ASU 2023-07. ASU 2023-09 “Improvements to Income Tax Disclosures” The ASU amends certain income tax disclosure requirements, including adding requirements to present the reconciliation of income tax expense computed at the statutory rate to actual income tax expense using both percentages and amounts and providing a disaggregation of income taxes paid. Further, certain disclosures are eliminated, including the current requirement to disclose information on changes in unrecognized tax benefits in the next 12 months. The ASU is effective for SJW Group beginning with its annual financial statements for the year ending December 31, 2025. Early adoption is permitted. Prospective, with retrospective application also permitted. SJW Group is currently evaluating the requirements of ASU 2023-09.

General (Tables)

General (Tables)	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Schedule of SJW Group's Revenue Components	SJW Group’s revenue components are as follows: Three months ended June 30, Six months ended June 30, 2024 2023 2024 2023 Revenue from contracts with customers $ 173,106 159,724 $ 323,114 295,560 Alternative revenue programs, net 1,314 (2,204) (523) (3,595) Other balancing and memorandum accounts and regulatory mechanisms, net 977 (2,050) 413 (646) Rental income 777 1,416 2,552 2,863 $ 176,174 156,886 $ 325,556 294,182
Schedule of Nonutility Properties and Real Estate Investments	The major components of real estate investments and nonutility properties as of June 30, 2024 and December 31, 2023, are as follows: June 30, December 31, Land $ 4,134 4,137 Wholesale water supply assets 8,465 8,465 Buildings and improvements 777 748 Subtotal 13,376 13,350 Less: accumulated depreciation and amortization 96 194 Total $ 13,280 13,156 December 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)	6 Months Ended
	Jun. 30, 2024
Regulated Operations [Abstract]
Schedule of Regulatory Assets, Net	Regulatory assets and liabilities are comprised of the following as of June 30, 2024 and December 31, 2023: June 30, 2024 December 31, 2023 Regulatory assets: Income tax temporary differences (a) $ 161,351 157,669 Unrecognized pensions and other postretirement benefits (b) 24,593 24,593 Business combinations debt premium (c) 13,584 14,855 Employee benefit costs (d) 6,407 9,815 Monterey Water Revenue Adjustment Mechanism (“MWRAM”) (e) 11,450 9,361 Customer Assistance Program (“CAP”) balancing account (f) 6,179 5,457 Catastrophic event memorandum accounts (“CEMA”) (g) 962 4,819 2022 general rate case interim memorandum account (h) 3,312 4,571 Water supply costs (i) — 583 Other (j) 12,182 8,463 Total regulatory assets 240,020 240,186 Less: current regulatory assets (k) 1,057 4,276 Total regulatory assets, less current portion $ 238,963 235,910 Regulatory liabilities: Cost of removal (l) 354,148 346,418 Future income tax benefits due to customers (m) 87,104 88,610 Unrecognized pensions and other postretirement benefits (b) 20,408 20,196 Revenue adjustment mechanisms (n) 6,104 5,536 Water supply costs (i) 6,105 — Other (o) 3,354 3,407 Total regulatory liabilities 477,223 464,167 Less: current regulatory liabilities (p) 1,930 3,059 Total regulatory liabilities, less current portion $ 475,293 461,108 ___________________________________ (a) Consists primarily of temporary income tax differences that are flowed through to customers, which will be recovered in future rates as these temporary differences reverse. The company expects to recover regulatory assets related to plant depreciation income tax temporary differences over the lives of the plant assets, which are between 4 to 100 years. (b) Represents actuarial losses and gains and prior service cost that have not yet been recognized as components of net periodic benefit cost for certain pension and other postretirement benefit plans. (c) Consists of debt fair value adjustments recognized through purchase accounting for the completed merger with CTWS in 2019. (d) Includes deferrals of pension and other postretirement benefit expense and cost of accrued benefits for vacation. (e) MWRAM is described in the following section. (f) Represents costs associated with SJWC’s CAP. (g) The California Public Utilities Commission (“CPUC”) has authorized water utilities to activate CEMA accounts in order to track savings and costs related to SJWC’s response to catastrophic events, which includes external labor and materials, increases in bad debt from suspension of shutoffs for non-payment, waived deposits and reconnection fees, and divergence from actual versus authorized usage. At December 31, 2023, balance primarily relates to increased bad debt expenses associated with SJWC’s response to COVID-19. (h) Represents the difference between revenues collected in interim rates in effect as of January 1, 2022 and revenues that would result from rates authorized in SJWC’s 2022 general rate case retroactive to January 1, 2022. (i) Reflects differences in actual water supply costs compared to amounts assumed in base rates, including applicable changes and variations in costs and quantities that affect the overall mix of the water supply. (j) Other includes other balancing and memorandum accounts and regulatory mechanisms, deferred costs for certain information technology activities, asset retirement obligations, tank painting, well reconditioning and rate case expenses. (k) As of June 30, 2024, primarily relates to the current portion of CWC’s deferred well redevelopment and rate case costs. As of December 31, 2023, primarily relates to the current portion of MWRAM. (l) Represents amounts collected in rates from customers for estimated costs to retire assets at the end of their expected useful lives before the costs are incurred. (m) On December 22, 2017 the Tax Cuts and Jobs Act of 2017 (the "Tax Act”) was signed into law. The Tax Act included a reduction in the federal income tax rate from 35% to 21%. The rate reduction was effective on January 1, 2018 and resulted in a regulatory liability for the excess deferred income taxes. The benefit of amortization of excess deferred income taxes flows back to the customers under current normalization rules and agreed upon methods with the commissions. (n) Consists of Water Rate Adjustment mechanism (“WRA”) and Water Conservation Memorandum Account (“ WCMA”), which are described in the following section. (o) Other includes other balancing and memorandum accounts, other regulatory mechanisms and accrued tank painting costs. (p) As of June 30, 2024 and December 31, 2023, primarily relates to the current portion of WRA.

Benefit Plans (Tables)

Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2024
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 and six months ended June 30, 2024 and 2023 are as follows: Pension Benefits Other Benefits Three months ended June 30, 2024 2023 2024 2023 Service cost $ 1,666 1,892 $ 166 160 Interest cost 3,613 3,557 295 317 Expected return on assets (4,463) (4,069) (267) (217) Amortization of actuarial (gain) loss (18) 554 (161) (88) Amortization of prior service cost 4 4 — — Total $ 802 1,938 $ 33 172 Pension Benefits Other Benefits Six months ended June 30, 2024 2023 2024 2023 Service cost $ 3,331 3,784 $ 332 320 Interest cost 7,226 7,115 591 634 Expected return on assets (8,926) (8,138) (534) (434) Amortization of actuarial (gain) loss (35) 1,108 (322) (176) Amortization of prior service cost 7 7 — — Total $ 1,603 3,876 $ 67 344

Equity Plans (Tables)

Equity Plans (Tables)	6 Months Ended
	Jun. 30, 2024
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, by award type, and proceeds from the ESPP, are presented below for the three and six months ended June 30, 2024 and 2023: Three months ended June 30, Six months ended June 30, 2024 2023 2024 2023 Compensation costs charged to income: ESPP $ — — $ 195 191 Restricted stock and deferred restricted stock 1,275 1,139 2,618 2,147 Total compensation costs charged to income $ 1,275 1,139 $ 2,813 2,338 ESPP proceeds $ — — $ 1,101 1,080

Segment and Non-Tariffed Busi_2

Segment and Non-Tariffed Business Reporting (Tables)	6 Months Ended
	Jun. 30, 2024
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 June 30, 2024 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 172,046 3,351 777 — 172,046 4,128 176,174 Operating expense 132,249 2,379 460 516 132,249 3,355 135,604 Operating income (loss) 39,797 972 317 (516) 39,797 773 40,570 Net income (loss) 23,956 498 (200) (3,558) 23,956 (3,260) 20,696 Depreciation and amortization 28,057 85 1 223 28,057 309 28,366 Interest on long-term debt and other interest expense 12,037 224 — 6,033 12,037 6,257 18,294 Provision (benefit) for income taxes $ 5,325 301 (68) (1,834) 5,325 (1,601) 3,724 For Three Months Ended June 30, 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 $ 152,525 2,945 1,416 — 152,525 4,361 156,886 Operating expense 122,678 1,789 661 600 122,678 3,050 125,728 Operating income (loss) 29,847 1,156 755 (600) 29,847 1,311 31,158 Net income (loss) 20,510 596 544 (3,364) 20,510 (2,224) 18,286 Depreciation and amortization 25,811 85 1 224 25,811 310 26,121 Interest on long-term debt and other interest expense 10,846 — — 5,551 10,846 5,551 16,397 Provision (benefit) for income taxes $ 102 320 243 (2,177) 102 (1,614) (1,512) For Six Months Ended June 30, 2024 Water Utility Services Real Estate Services All Other (1) SJW Group Regulated Non-tariffed Non-tariffed Non-tariffed Regulated Non-tariffed Total Operating revenue $ 316,961 6,043 2,552 — 316,961 8,595 325,556 Operating expense 250,030 3,989 1,186 1,868 250,030 7,043 257,073 Operating income (loss) 66,931 2,054 1,366 (1,868) 66,931 1,552 68,483 Net income (loss) 38,556 1,230 583 (7,974) 38,556 (6,161) 32,395 Depreciation and amortization 56,118 170 2 446 56,118 618 56,736 Interest on long-term debt and other interest expense 23,579 445 — 11,854 23,579 12,299 35,878 Provision (benefit) for income taxes $ 9,021 619 198 (3,883) 9,021 (3,066) 5,955 For Six Months Ended June 30, 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 $ 285,797 5,522 2,863 — 285,797 8,385 294,182 Operating expense 231,545 3,203 1,560 1,538 231,545 6,301 237,846 Operating income (loss) 54,252 2,319 1,303 (1,538) 54,252 2,084 56,336 Net income (loss) 33,732 1,214 969 (6,099) 33,732 (3,916) 29,816 Depreciation and amortization 51,497 169 304 447 51,497 920 52,417 Interest on long-term debt and other interest expense 21,393 — — 10,776 21,393 10,776 32,169 Provision (benefit) for income taxes $ 2,826 643 385 (4,288) 2,826 (3,260) (434) ____________________ (1) The “All Other” category for the three and six months ended June 30, 2024 and 2023, includes the accounts of SJW Group, SJWNE LLC, CTWS and SJWTX Holdings, Inc. on a stand-alone basis. SJW Group’s assets by segment are as follows: June 30, 2024 December 31, 2023 Water Utility Services: Regulated $ 4,321,187 4,199,172 Non-tariffed 43,032 43,532 Total water utility services 4,364,219 4,242,704 Real Estate Services 20,742 44,222 All Other 54,466 58,141 Total assets $ 4,439,427 4,345,067 Regulated $ 4,321,187 4,199,172 Non-tariffed 118,240 145,895 Total assets $ 4,439,427 4,345,067

General - Narrative (Details)

General - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2024 USD ($)	Apr. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($) subsidiary
Schedule of Investments [Line Items]
Number of subsidiaries | subsidiary				4
Gain (loss) on disposition of assets			$ (909)	$ (909)
Portion of proceeds from sale of productive assets, held in escrow	$ 2,801		$ 2,801	$ 2,801
Warehouse Building
Schedule of Investments [Line Items]
Proceeds from sale of productive assets		$ 27,000
Gain (loss) on disposition of assets		$ 6,918
Office Building, Land, and Parking Lot
Schedule of Investments [Line Items]
Proceeds from sale of productive assets	17,000
Gain (loss) on disposition of assets	$ (7,827)

General - Schedule of SJW Group

General - Schedule of SJW Group's Revenue Components (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounting Policies [Abstract]
Revenue from contracts with customers	$ 173,106	$ 159,724	$ 323,114	$ 295,560
Alternative revenue programs, net	1,314	(2,204)	(523)	(3,595)
Other balancing and memorandum accounts and regulatory mechanisms, net	977	(2,050)	413	(646)
Rental income	777	1,416	2,552	2,863
Operating revenue	$ 176,174	$ 156,886	$ 325,556	$ 294,182

General - Schedule of Nonutilit

General - Schedule of Nonutility Properties and Real Estate Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Land	$ 4,134	$ 4,137
Wholesale water supply assets	8,465	8,465
Buildings and improvements	777	748
Nonutility properties and real estate investments	13,376	13,350
Less accumulated depreciation and amortization	96	194
Net nonutility properties and real estate investments	$ 13,280	13,156
Tennessee Properties
Schedule of Investments [Line Items]
Land		13,170
Buildings and improvements		44,950
Nonutility properties and real estate investments		58,120
Less accumulated depreciation and amortization		17,270
Net nonutility properties and real estate investments		$ 40,850

General - Fair Value Measuremen

General - Fair Value Measurement (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 1,335,706	$ 1,394,412
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	1,319,532	1,378,683
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	16,174	15,729
Fair Value, Inputs, Level 1 | Supplemental Employee Retirement Plan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of plan assets	$ 2,639	$ 2,833

General - Earnings per Share (D

General - Earnings per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
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)	6,567	1,843	9,394	10,698

General - Accounts Receivable (

General - Accounts Receivable (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2024 USD ($) $ / shares
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduction to its allowance for credit losses	$ 7,822
General and Administrative Expense
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduction to its allowance for credit losses	3,862
Reduction in allowance for credit losses, net of tax	$ 2,782
Reduction in allowance for credit loss, per diluted share (in dollars per share) | $ / shares	$ 0.09
Regulatory Asset
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduction to its allowance for credit losses	$ 3,960

Regulatory Matters - Regulatory

Regulatory Matters - Regulatory Assets, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Regulatory assets:
Total regulatory assets	$ 240,020	$ 240,186
Less: current regulatory assets	1,057	4,276
Total regulatory assets, less current portion	238,963	235,910
Regulatory liabilities:
Total regulatory liabilities	477,223	464,167
Less: current regulatory liabilities	1,930	3,059
Total regulatory liabilities, less current portion	$ 475,293	461,108
Minimum
Regulatory liabilities:
Estimated service lives of assets	4 years
Maximum
Regulatory liabilities:
Estimated service lives of assets	100 years
Cost of removal
Regulatory liabilities:
Total regulatory liabilities	$ 354,148	346,418
Future income tax benefits due to customers
Regulatory liabilities:
Total regulatory liabilities	87,104	88,610
Unrecognized pensions and other postretirement benefits
Regulatory liabilities:
Total regulatory liabilities	20,408	20,196
Revenue adjustment mechanisms
Regulatory liabilities:
Total regulatory liabilities	6,104	5,536
Water supply costs
Regulatory liabilities:
Total regulatory liabilities	6,105	0
Other
Regulatory liabilities:
Total regulatory liabilities	3,354	3,407
Future income tax benefits due to customers
Regulatory assets:
Total regulatory assets	161,351	157,669
Unrecognized pensions and other postretirement benefits
Regulatory assets:
Total regulatory assets	24,593	24,593
Business combinations debt premium
Regulatory assets:
Total regulatory assets	13,584	14,855
Employee benefit costs
Regulatory assets:
Total regulatory assets	6,407	9,815
Monterey Water Revenue Adjustment Mechanism
Regulatory assets:
Total regulatory assets	11,450	9,361
Customer Assistance Program ("CAP") balancing account
Regulatory assets:
Total regulatory assets	6,179	5,457
Catastrophic event memorandum accounts ("CEMA")
Regulatory assets:
Total regulatory assets	962	4,819
2022 general rate case interim memorandum account
Regulatory assets:
Total regulatory assets	3,312	4,571
Water supply costs
Regulatory assets:
Total regulatory assets	0	583
Other
Regulatory assets:
Total regulatory assets	$ 12,182	$ 8,463

Regulatory Matters - Narrative

Regulatory Matters - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Regulated Operations [Abstract]
Authorized revenue, threshold percentage	2%
Regulatory assets, net not earning a return	$ 41,960	$ 43,141

Capitalization (Details)

Capitalization (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	31 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Nov. 17, 2021
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in usd per share)	$ 0.001	$ 0.001	$ 0.001	$ 0.001
At The Market Offering
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in usd per share)					$ 0.001
Aggregate gross sales price (up to)					$ 240,000
Shares issued in offering (in shares)	458,605	584,630	2,589,287
Weighted average price per share (in usd per share)	$ 56.13	$ 56.35	$ 69.68
Net proceeds from stock offering	$ 25,296	$ 32,302	$ 176,299
Total equity distribution	$ 59,567	$ 59,567	$ 59,567

Lines of Credit and Long-Term_2

Lines of Credit and Long-Term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Nov. 15, 2023
Debt Instrument [Line Items]
Weighted-average interest rate on short-term	6.45%	6.48%
San Jose Water Company | 4.85% Senior Note, Series P | Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount			$ 25,000
Interest rate			6.46%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ 3,724	$ (1,512)	$ 5,955	$ (434)
Effective consolidated income tax rate	15%	(9.00%)	16%	(1.00%)
Unrecognized tax benefits	$ 4,630		$ 4,630		$ 4,511

Benefit Plans - Narrative (Deta

Benefit Plans - Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer plan contributions	$ 2,258	$ 2,258
Maximum
Defined Benefit Plan Disclosure [Line Items]
Estimated employer contributions for the remainder of fiscal year	$ 4,515	$ 4,515
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		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,666	$ 1,892	$ 3,331	$ 3,784
Interest cost	3,613	3,557	7,226	7,115
Expected return on assets	(4,463)	(4,069)	(8,926)	(8,138)
Amortization of actuarial (gain) loss	(18)	554	(35)	1,108
Amortization of prior service cost	4	4	7	7
Total	802	1,938	1,603	3,876
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	166	160	332	320
Interest cost	295	317	591	634
Expected return on assets	(267)	(217)	(534)	(434)
Amortization of actuarial (gain) loss	(161)	(88)	(322)	(176)
Amortization of prior service cost	0	0	0	0
Total	$ 33	$ 172	$ 67	$ 344

Equity Plans - Narrative (Detai

Equity Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 35		$ 35
Plan expense	$ 106	$ 106	$ 203	$ 196
Restricted stock and deferred restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments granted (in shares)	24,692	9,610	64,482	37,342
Service-based restricted stock vesting period	1 year	3 years	1 year	3 years
Grant date fair value of equity instruments granted (in usd per share)	$ 50.04	$ 75.28	$ 58.39	$ 77.21
Unrecognized compensation costs	$ 7,555		$ 7,555
Recognition period for unrecognized compensation cost			2 years 14 days
Restricted stock and deferred restricted stock | Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable upon exercise of incentive plan awards (in shares)	192,750		192,750
Remaining shares available for issuance (in shares)	1,034,642		1,034,642
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments granted (in shares)	356	0	45,763	31,345
Grant date fair value of equity instruments granted (in usd per share)	$ 52.90		$ 55.60	$ 80.05
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%

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		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	$ 1,275	$ 1,139	$ 2,813	$ 2,338
Restricted stock and deferred restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	1,275	1,139	2,618	2,147
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	0	0	195	191
ESPP proceeds	$ 0	$ 0	$ 1,101	$ 1,080

Segment and Non-Tariffed Busi_3

Segment and Non-Tariffed Business Reporting - Narrative (Details)	6 Months Ended
	Jun. 30, 2024 subsidiary
Segment Reporting [Abstract]
Number of subsidiaries	4

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				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Operating revenue	$ 176,174		$ 156,886		$ 325,556	$ 294,182
Operating expense	135,604		125,728		257,073	237,846
Operating income (loss)	40,570		31,158		68,483	56,336
Net income (loss)	20,696	$ 11,699	18,286	$ 11,530	32,395	29,816
Depreciation and amortization	28,366		26,121		56,736	52,417
Interest on long-term debt and other interest expense	18,294		16,397		35,878	32,169
Provision (benefit) for income taxes	3,724		(1,512)		5,955	(434)
Total assets	4,439,427				4,439,427		$ 4,345,067
Water Utility Services
Segment Reporting Information [Line Items]
Total assets	4,364,219				4,364,219		4,242,704
Water Utility Services | Regulated
Segment Reporting Information [Line Items]
Operating revenue	172,046		152,525		316,961	285,797
Operating expense	132,249		122,678		250,030	231,545
Operating income (loss)	39,797		29,847		66,931	54,252
Net income (loss)	23,956		20,510		38,556	33,732
Depreciation and amortization	28,057		25,811		56,118	51,497
Interest on long-term debt and other interest expense	12,037		10,846		23,579	21,393
Provision (benefit) for income taxes	5,325		102		9,021	2,826
Total assets	4,321,187				4,321,187		4,199,172
Water Utility Services | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	3,351		2,945		6,043	5,522
Operating expense	2,379		1,789		3,989	3,203
Operating income (loss)	972		1,156		2,054	2,319
Net income (loss)	498		596		1,230	1,214
Depreciation and amortization	85		85		170	169
Interest on long-term debt and other interest expense	224		0		445	0
Provision (benefit) for income taxes	301		320		619	643
Total assets	43,032				43,032		43,532
Real Estate Services | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	777		1,416		2,552	2,863
Operating expense	460		661		1,186	1,560
Operating income (loss)	317		755		1,366	1,303
Net income (loss)	(200)		544		583	969
Depreciation and amortization	1		1		2	304
Interest on long-term debt and other interest expense	0		0		0	0
Provision (benefit) for income taxes	(68)		243		198	385
Total assets	20,742				20,742		44,222
All Other | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	0		0		0	0
Operating expense	516		600		1,868	1,538
Operating income (loss)	(516)		(600)		(1,868)	(1,538)
Net income (loss)	(3,558)		(3,364)		(7,974)	(6,099)
Depreciation and amortization	223		224		446	447
Interest on long-term debt and other interest expense	6,033		5,551		11,854	10,776
Provision (benefit) for income taxes	(1,834)		(2,177)		(3,883)	(4,288)
Total assets	54,466				54,466		58,141
SJW Group | Regulated
Segment Reporting Information [Line Items]
Operating revenue	172,046		152,525		316,961	285,797
Operating expense	132,249		122,678		250,030	231,545
Operating income (loss)	39,797		29,847		66,931	54,252
Net income (loss)	23,956		20,510		38,556	33,732
Depreciation and amortization	28,057		25,811		56,118	51,497
Interest on long-term debt and other interest expense	12,037		10,846		23,579	21,393
Provision (benefit) for income taxes	5,325		102		9,021	2,826
Total assets	4,321,187				4,321,187		4,199,172
SJW Group | Non-tariffed
Segment Reporting Information [Line Items]
Operating revenue	4,128		4,361		8,595	8,385
Operating expense	3,355		3,050		7,043	6,301
Operating income (loss)	773		1,311		1,552	2,084
Net income (loss)	(3,260)		(2,224)		(6,161)	(3,916)
Depreciation and amortization	309		310		618	920
Interest on long-term debt and other interest expense	6,257		5,551		12,299	10,776
Provision (benefit) for income taxes	(1,601)		$ (1,614)		(3,066)	$ (3,260)
Total assets	$ 118,240				$ 118,240		$ 145,895

Acquisitions (Details)

Acquisitions (Details) $ in Thousands	Aug. 14, 2023 USD ($) serviceConnection people
KT Water Resource L. P.
Business Acquisition [Line Items]
Asset acquisition, consideration transferred before transaction costs	$ 39,891
Payment for asset acquisition	24,491
Seller financing in asset acquisition, net of discount	15,400
Asset acquisition, transaction cost	170
Asset acquisition, consideration transferred	40,061
Asset acquisition, other intangible asset	28,386
Asset acquisition, nonutility property	11,684
Asset acquisition, other current liabilities	9
Asset acquisition, post-closing production payment	$ 29,000
Asset acquisition, period of post-closing production payment	29 years
KT Water Development Ltd
Business Acquisition [Line Items]
Payments for business acquisition	$ 7,338
Texas Water | KT Water Development Ltd
Business Acquisition [Line Items]
Number of people served from acquisition | people	1,725
Texas Water | KT Water Development Ltd | Southern Comal County, Texas
Business Acquisition [Line Items]
Number of service connections from acquisition | serviceConnection	570