Contact Us

To submit a comment or protest related to the 2023 Water Rate Proposal, visit our Water Rates page.


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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.

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

Customer Service Hours: 
7:30 am to 5:00 pm
Monday – Friday (except holidays)
Lobby Hours: 
8:00 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

    Which Director is the intended recipient?
    Please note: The is currently a vacancy for Division 1. Learn about the Board Appointment.

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