CONTRA COSTA WATER DISTRICT
Serving 17 cities in CA
Monitor
2 above health guidelines
198K
People Served
17
Cities
2
Water Sources
0
MCL Violations
Is CONTRA COSTA WATER DISTRICT Water Safe to Drink?
CONTRA COSTA WATER DISTRICT has reported 2 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.
This utility serves 198,000 people across 17 cities in CA. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.
CONTRA COSTA WATER DISTRICT Service Area
Alhambra Valley, CA
188+ contaminants tested
1 above guidelines
Monitor
Antioch, CA
162+ contaminants tested
1 above guidelines
Monitor
Bay Point, CA
162+ contaminants tested
1 above guidelines
Monitor
Brentwood, CA
162+ contaminants tested
1 above guidelines
Monitor
Clayton, CA
162+ contaminants tested
1 above guidelines
Monitor
Clyde, CA
162+ contaminants tested
1 above guidelines
Monitor
Concord, CA
162+ contaminants tested
1 above guidelines
Monitor
Contra Costa Centre, CA
162+ contaminants tested
1 above guidelines
Monitor
Martinez, CA
188+ contaminants tested
1 above guidelines
Monitor
Mountain View, CA
246+ contaminants tested
2 above guidelines
Monitor
North Gate, CA
162+ contaminants tested
1 above guidelines
Monitor
Oakley, CA
162+ contaminants tested
1 above guidelines
Monitor
Pacheco, CA
162+ contaminants tested
1 above guidelines
Monitor
Pittsburg, CA
193+ contaminants tested
2 above guidelines
Monitor
Pleasant Hill, CA
147+ contaminants tested
0 above guidelines
Safe
Vine Hill, CA
162+ contaminants tested
1 above guidelines
Monitor
Walnut Creek, CA
147+ contaminants tested
0 above guidelines
Safe
CONTRA COSTA WATER DISTRICT Contact & Information
Contact
Mailing Address
Water Sources
Surface water purchasedSurface water
Treatment Methods
conventionalpre-oxidation with chlorinebiological filtrationfiltration
Disinfectant Used
chloramines, hypochlorite, ozone
Recommended Water Filters for CONTRA COSTA WATER DISTRICT
Based on water quality data from cities served by CONTRA COSTA WATER DISTRICT, we recommend NSF-certified filters that can remove contaminants above health guidelines.