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, we take great effort and pride in delivering a product that exceeds all drinking water standards set by the state and federal governments.

CCWD-AWQR-2022You can be confident your tap water is of a high quality. Frequent testing for water quality and regular improvements in the treatment process keeps your drinking water among the best in the country. Additionally, your water providers are committed to prudent capital investments that ensure a reliable, well-maintained system that delivers high-quality water around the clock.

Annual Water Quality Reports

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 ProviderContact PersonContact Telephone
Contra Costa Water DistrictErin Gomez925-688-8091
City of AntiochIvona Kagin
City of Martinez Hiren Patel925-372-3588
City of PittsburgAna Corti925-252-6916
Diablo Water District Nacho Mendoza925-625-2112
Golden State Water Company (Bay Point)n/a800-999-4033
City of Brentwood James Wolfe925-516-6000