Contact Us

Contra Costa Water District

1331 Concord Avenue
Concord, CA 94520
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Hours: 8 a.m. to 5 p.m.
Monday through Friday

Main Line: (925) 688-8000

Customer Service: (925) 688-8044

Public Affairs: (925) 688-8109

Conservation: (925) 688-8320

Water Quality Hotline: (925) 688-8156

Engineering Department

2411 Bisso Lane
Concord, CA 94520
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Hours: 7:30 a.m. to 5 p.m.
Monday through Friday

Engineering: (925) 688- 8014

Los Vaqueros Marina

9990 Los Vaqueros Road
Byron, CA 94514
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Marina: (925) 371-2628

For Water Emergencies

(925) 688-8095 
7 a.m. to 3:30 p.m.
Monday through Friday

(925) 688-8374 
All other times

Email Us

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