Contact Us

We're here to help

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.

Addresses and Hours

Physical Address:
Contra Costa Water District
1331 Concord Avenue
Concord, CA 94520

Lobby Hours: 
8:00 am to 5:00 pm
Monday – Friday 
(except holidays)

Customer Service Hours: 
7:30 am to 5:00 pm
Monday – Friday 
(except holidays)

Mailing Address:
Contra Costa Water District
P.O. Box H20
Concord, CA 94524

Call us

General925-688-8000
Emergencies 24/7925-688-8374
Water Quality Hotline925-688-8156
Water Efficiency925-688-8320
Engineering Support925-688-8014
Public Affairs925-688-8109
Los Vaqueros Marina925-371-2628
Water Education925-588-1909

Contact Form

  1. We're here to help

    You can reach us on the phone during regular business hours at 925-688-8000, or by filling out and submitting the form below, and we'll respond within 2 business days. For water emergencies, to report suspicious activity, or to report leaks in the street, we are available 24/7 at 925-688-8374.

  2. Board of Directors

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