California Water Service Group
California Water Service Group (NYSE: CWT) is a holding company whose operating subsidiaries provide water and wastewater utility services to residential, industrial, public, and irrigation customers, as well as water for fire protection. Its services include producing, purchasing, treating, testing, storing, and… From the company’s description.
Over the twelve months to Sep 30, 2026, California Water Service Group reported revenue of $1.08B, up 7.3% from a year earlier, and net income of $137.37M. Its operating margin was 18.4%, and operations generated $310.14M in cash. In fiscal 2025, it reported revenue of $1.00B, down 3.5% from fiscal 2024, and net income of $127.85M.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What California Water Service Group does
In the company’s own words
California Water Service Group (NYSE: CWT) is a holding company whose operating subsidiaries provide water and wastewater utility services to residential, industrial, public, and irrigation customers, as well as water for fire protection. Its services include producing, purchasing, treating, testing, storing, and distributing water, and collecting and treating wastewater. It also provides contracted water-system operations, meter reading, billing, laboratory services, and other water-related services to municipalities and private companies. The company operates one reportable segment, supplying and distributing water and providing wastewater services. Its subsidiaries serve customers in California, Hawaii, New Mexico, Washington, and Texas; California operations generated 91.2% of consolidated operating revenue in 2025. At year-end 2025, the company served approximately 562,000 customer connections, representing about two million people. Cal Water, the original operating company, began operations in 1926. Its website is www.calwatergroup.com.
Company details
- Sector
- Utilities
- Industry (SIC)
- Electric, Gas & Water
- Headquarters
- SAN JOSE, CA
- Fiscal year end
- December
- CIK
- 1035201
- SIC
- 4941
Financial performance, year by year
Fiscal 2011–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns California Water Service Group — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · California Water Service Group’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
Compare this company with peers, find it in your funds and follow its financial history with your connected AI:
- “How do California Water Service Group and its peers compare on margins and cash generation over ten years?”
- “Where did five years of California Water Service Group's earnings go — cash, debt, buybacks, reinvestment?”
- “What changed in California Water Service Group's last four quarterly filings that the numbers alone won't show?”