My Martinez

Water System

Billing:  (925) 372-3576

Water Quality: (925) 372-3588

The Water System provides a reliable supply of high quality potable water in sufficient quantity to meet the needs of Martinez residents and businesses. The safety of the water and the health of the community is ensured though the use of advanced technology, proper water treatment, water quality analysis, treatment plant maintenance, backflow prevention, and maintenance of the water distribution system.

Visit the Martinez Water System Billing page for more information.

The City of Martinez publishes a drinking water quality report annually. This report is completed with the cooperation of Antioch, Pittsburg, CCWD, and DWD. Follow this link to the most recent report regarding your water quality.

City of Martinez water system customers are part of the Contra Costa Water - Source Water Division. Contra Costa Water District offers many free services and rebates to its customers. Visit their website for more details

The City of Martinez has prepared the 2015 update of its Urban Water Management Plan to fulfill the requirements outlined in the California Urban Water Management Planning Act and the Water Conservation Bill of 2009.  This plan includes all information necessary to meet the requirements of California Water Code, Division 6, Part 2.6 (Urban Water Management Planning) 2015 Urban Water Management Plan

Report a Leak in the Street

If you discover a ruptured or leaking water main in the street, or a broken or leaking fire hydrant, please let the City know immediately so we can correct the problem.  These conditions may seem minor at the time but can become a serious problem if left unattended.

If the condition is discovered during normal maintenance yard working hours of 7 a.m. to 3:30 p.m., Monday through Friday, call the following number without delay, so a City repair crew can be dispatched:  (925) 372-3580.

If the condition is discovered after hours or on weekends and holidays, please call:  (925) 372-3440.

Thank you for your assistance in helping us to resolve these problems as soon as they are noticed.

Water Main Flushing Program - Winter 2019-2020

City of Martinez Public Works will conduct water hydrant flushing beginning December 9, 2019.  The process will be performed daily, between 1:30 p.m. and 3:30 p.m. and will continue until all water mains throughout our water systems have been flushed.

Why Is Flushing Needed?

To improve quality and minimize discoloration of the drinking water, caused by sediments in the pipes.


How Will Flushing Affect Water Service?

When flushing crews are working close to your residence or business, you may experience short periods of low pressure. Water outages are not anticipated.

Flushing operations may also lead to discolored water, which can be drawn into homes and businesses if the water is being used during or immediately following the flushing. Such events should affect customers for a few hours at most. The discoloration is caused by iron (red color) or manganese (black color) particles being dislodged from the water main. If discoloration occurs, open the cold tap nearest the water meter to full flow until the water runs clear. In some situations, this may take 5 to 10 minutes. It is also advised that you make sure your water is clear before doing laundry or other projects for which discolored water could cause problems.

For further information, please contact our office at 925.372.3588.

We ask for your patience and understanding during this important main cleaning process.