Water Quality Reports
We are pleased to present the Annual Water Quality Report that shows the high quality of your drinking water. As the water providers to more than 500,000 people, you can count on us to provide a reliable product that exceeds all drinking water standards set by the state and federal governments keeping our community healthy and thriving. We wisely put your water dollars to work investing in the systems and infrastructure that deliver a reliable supply of high-quality water at the lowest cost possible.
You can be confident your tap water is of a high quality that is always there for you. Frequent testing for water quality and regular improvements in the treatment process keeps your drinking water among the best in the country. We hope you find this report useful in illustrating the high quality of your water service.
Annual Water Quality Reports
- 2021 Annual Water Quality Report (PDF)
- 2021 Annual Water Quality Report (Spanish) (PDF)
- Water Quality Reports Archive
Triennial Public Health Goals Reports
More Water Quality Reporting
Water Provider Contact List
If you have questions about the tap water in your community, please call your water provider using the contact list below.
|Water Provider||Contact Person||Contact Telephone|
|Contra Costa Water District||Erin Gomez||925-688-8091|
|City of Antioch||Laura Villasana||925-779-7024|
|City of Martinez||Hiren Patel||925-372-3588|
|City of Pittsburg||Ana Corti||925-252-6916|
|Diablo Water District||Nacho Mendoza||925-625-2112|
|Golden State Water Company (Bay Point)||n/a||800-999-4033|
|City of Brentwood||James Wolfe||925-516-6000|