Contra Costa Water District delivers safe, clean water to communities across 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.

Low-cost air pollution sensors reveal stark disparities in exposure to extreme heat and air pollution in Contra Costa County, a major traffic corridor and oil refinery hub near San Francisco.

Health officials in the East Bay said a man has died from consuming toxic wild mushrooms, amid an ongoing spike in mushroom-related poisonings throughout California.

To address the threat of invasive species and restore the environment, the Contra Costa County Flood Control and Water Conservation District hosted its recent 12th annual Giving Natives a Chance event at the Clayton Valley Drain near Concord's Hillcrest Community Park,

MARTINEZ, Calif. - The Contra Costa County Clerk-Recorder's office is about to start looking for official prejudice in county property records. The county announced Wednesday the launch of its initiative "Mapping Prejudice in Contra Costa County," a ...

A County Warning System Level 1 alert is in effect now.

Contra Costa County revealed a new innovative way to help immigrants struggling through the federal system, with a legal office on wheels.