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