You can reach us at 925-688-8000 during regular business hours or send us an email.
Water emergency? To report suspicious activity, or to report leaks in the street, we are available 24/7 at 925-688-8374.
Contra Costa Water District1331 Concord AvenueConcord, CA 94520Temporarily closed to the public.
Contra Costa Water DistrictP.O. Box H20Concord, CA 94524