In-person service is not available at this location; however, our customer service representatives are happy to serve you by phone or email. In-person and other payment options are detailed on the Payment Options page.
Cal Water has begun work on a water infrastructure upgrade that will improve water supply reliability and fire protection in Hamilton City. Crews are working to install 3,289 feet of...
Cal Water will begin installing treatment on a Chico well to meet the U.S. Environmental Protection Agency’s (EPA) adoption of a new National Primary Drinking Water Regulation for certain per-...
Cal Water’s Chico District was formed in 1926 with the purchase of the Chico Water Supply Company, Chico-Vecino Water Company, and the C.C. White Water Company. We began serving Hamilton City in 1962. Our company-wide water quality assurance program includes vigilant monitoring throughout our systems and testing at our state-of-the-art laboratory.
Our Water Systems
Chico
To meet the needs of our Chico customers, we utilize 68 wells to pump an average of 27 million gallons of groundwater per day, which is delivered through 373 miles of pipeline, eight storage tanks, and nine booster pumps.
Hamilton City
Cal Water has provided high-quality water utility services in the Hamilton City area since 1962. To meet the needs of our Hamilton City customers, we utilize three wells to pump an average of 0.56 million gallons of groundwater per day, which is delivered through 7.7 miles of pipeline.
Frequently Asked Questions
What forms of payment does Cal Water accept?
You can pay your Cal Water bill with cash, a check, a money order, a credit card, a debit card, or bank account. However, available payment options vary depending on the payment location or method. For more detail, see the Payment Options page.
What is the Customer Assistance Program (CAP)?
Cal Water offers a Customer Assistance Program (CAP — formerly LIRA) to customers who meet income guidelines. Qualifying customers receive a discount on their monthly service charge. You can visit the CAP page to see if you qualify and download an application form. If you live in a single-family residence, you can also apply online.
What should I do if my bill seems higher than usual?
See the High Bills page for more information and suggestions.
How do I turn off the water supply to my house in the event of a break in my plumbing or a repair?
You can interrupt the flow of water to your home by turning off your house valve. House valves are usually located beneath a faucet outside the home, most typically near the faucet for the garden hose. If you cannot find your house valve, please contact your local Customer Center for assistance.
Payment Mailing Address
California Water Service P.O. Box 7229 San Francisco, CA 94120-7229
Automated Payment Number
(888) 598-9824
Rebates
Rates
Customer Assistance: We’re Here to Help
Cal Water has services and programs to assist you in a variety of circumstances.
