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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, we are 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, we are committed to transparency and sharing information about our public services with many and varied audiences.
We're here to help. See full details on how to get in touch with us.
Review helpful resources for the District.
The Contra Costa Water District is governed by 5 elected directors, each representing a division of approximately 110,000 people.
The history of our water district.
We offer tours of our water facilities and treatment plants to educate our customers about the vital infrastructure and people behind their drinking water.
See the latest news releases and customer alerts.