Water: Local Drinking Water Information
California Drinking Water
Note: External links to state web sites and contacts may not be accurate at this time, we are currently reviewing this information. Please check back with us for the updates on these pages..
The water you drink
Drinking water suppliers now provide reports (sometimes called consumer confidence reports) that tell where drinking water comes from, and what contaminants may be in it.
- Read your water quality report if it is online, or
- contact your water supplier to get a copy.
To view the information about your drinking water supplier that is in EPA's database, please visit the Envirofacts page on your state.
If your drinking water comes from a private well, you are responsible for your water's safety. EPA rules do not apply to private wells (although some state rules do), but EPA recommends that well owners have their water tested annually. Contact your state to get a list of certified commercial laboratories that test drinking water.
Where does drinking water come from?
Find out about the watershed that supplies your drinking water and how to protect it.
If your water comes from a ground water source, read about your state's ground water quality. 
State drinking water offices
California's drinking water program
Department of Public Health
Drinking Water Program
Headquarters Office
1616 Capitol Ave
PO Box 997377, MS 7400
Sacramento, CA 95899-7377
916-449-5577
California's source water program
Department of Public Health
Drinking Water Program
Drinking Water Source Assessment and Protection (DWSAP) Program
Headquarters Office
1616 Capitol Ave
PO Box 997377, MS 7400
Sacramento, CA 95899-7377
916-449-5577
Compliance trends
Each state produces an annual report on trends among its drinking water systems. Read California's report or EPA's national summary
Funds for safer water
States can use funds that the EPA makes available through the Drinking Water State Revolving Fund program to help their water suppliers improve drinking water quality. Find out more about California's program.
For general information on drinking water
Contact EPA's Safe Drinking Water Hotline at 1-800-426-4791.