About Us

The Contra Costa Water District delivers safe, clean water to approximately 500,000 people in central and eastern Contra Costa County in Northern California.

Formed in 1936 to provide water for irrigation and industry, CCWD is now one of the largest urban water districts in California and a leader in drinking-water treatment technology and source water protection.
As a public water agency, the Contra Costa Water District has made a concerted effort to share information about its public services with many and varied audiences.

Emailing Contra Costa Water District

All emails that are sent through our Contact Form are answered promptly. Those emails addressed to specific employees or departments will be forwarded to them.

Historic Video

Please take a few minutes to watch our video on the Contra Costa Water District and its unbreakable promise to alway provide safe, clean and healthy water.