In 2026, Contra Costa Water District marks 90 years serving our communities. Since our official establishment in 1936, our system has grown to meet the needs of more than half a million people. Learn more about this important milestone.

Some trails that were temporarily closed earlier this year to protect nesting golden eagles have begun to reopen. Learn more about recent updates to trail closures.

From Oakley to Martinez, the Contra Costa Canal is the backbone of your water system. Built in the 1930s and 40s, the canal carries untreated water from the Delta to treatment plants and water providers that serve central and eastern Contra Costa County. Read on...