Cover Page - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2023

Feb. 15, 2024

Jun. 30, 2023

Entity [Abstract]

Document Type

10-K

Document Annual Report

true

Current Fiscal Year End Date

--12-31

Document Period End Date

Dec. 31, 2023

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 Well-known Seasoned Issuer

Yes

Entity Voluntary Filers

No

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

ICFR Auditor Attestation Flag

true

Document Financial Statement Error Correction Flag

false

Entity Shell Company

false

Entity Public Float

$ 2,199

Entity Common Stock, Shares Outstanding

32,060,353

Documents Incorporated by Reference

Portions of the registrant’s Proxy Statement relating to the registrant’s Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K where indicated.

Entity Central Index Key

0000766829

Document Fiscal Year Focus

2023

Document Fiscal Period Focus

FY

Amendment Flag

false