v3.25.2
Cover
Jul. 07, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 07, 2025
Entity File Number 001-8966
Entity Registrant Name H2O America
Entity Central Index Key 0000766829
Entity Tax Identification Number 77-0066628
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 110 West Taylor Street
Entity Address, City or Town San Jose
Entity Address, Country CA
Entity Address, Postal Zip Code 95110
City Area Code 408
Local Phone Number 279-7800
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.001 per share
Trading Symbol HTO
Security Exchange Name NASDAQ
Entity Emerging Growth Company false