Company overview
California Water Service Group, through its subsidiaries, provides water utility and other related services in California, Washington, New Mexico, Hawaii, and Texas. The company is involved in the production, purchase, storage, treatment, testing, distribution, and sale of water for domestic, industrial, public, and irrigation uses, as well as for fire protection services. It offers its services to approximately 499,400 customer connections in 100 California communities; approximately 6,700 water and wastewater customer connections on the islands of Kauai, Maui, Oahu, and Hawaii; approximately 38,300 customer connections in the Tacoma, Olympia, Graham, Spanaway, Puyallup, Rainier, Yelm, and Gig Harbor areas; and approximately 11,500 water and wastewater customer connections in Rio Communities, Rio Del Oro, Meadow Lake, Indian Hills, Squaw Valley, Elephant Butte, Morningstar, Sandia Knolls, Juan Tomas, Monterey, and Cypress Gardens systems. The company also engages in the provision of non-regulated water-related services, including operating of municipally owned water systems, privately owned water, and recycled water distribution systems; water system operation, meter reading, and billing services to private companies and municipalities; leasing of communication antenna sites on its properties; and billing of optional third-party insurance programs to its residential customers. In addition, it provides wastewater collection and treatment services. California Water Service Group was founded in 1926 and is headquartered in San Jose, California.
Daily valuation snapshot
These values come from the daily market snapshot dated 2026-10-08. TTM means trailing twelve months. Use the market date when comparing CWT with another company.
| Daily close (USD) | $45.6 |
| Market capitalization (USD) | $2,819,863,005.6 |
| Price / earnings (TTM) | 21.17 |
| Price / book | Not reported |
No matching rows. Clear the filter to see all records.
Read CWT's valuation metrics
Company size
California Water Service's recorded market capitalization is $2,819,863,005.6. It measures the market value of the company's equity, rather than its revenue or cash balance.
Price relative to earnings
CWT's recorded P/E is 21.17: about $21.17 of share price for each $1 of trailing annual earnings per share. Compare that multiple with earnings growth and companies in the same business.
Price relative to book equity
Price-to-book compares market equity value with recorded book equity. Intangible assets, profitability and the company's business affect how useful the comparison is.
Research California Water Service with Aurora
Use the snapshot above to ask a specific question about CWT. Ask for the report period and the figures behind the explanation, then compare the answer with the company's business description.
Continue the research
Follow CWT's ownership disclosures to see who filed a transaction or position and when it became public. To turn a research idea into a strategy, define an entry rule and test its dated observations.