CONTRA COSTA WATER DISTRICT
Community Water System · California · CONCORD
PWSID: CA0710003
Compliant
Population Served
198.0K
Service Connections
60.7K
Total Violations
4
Health-Based Violations
3
Lead & Copper Data
Lead Level
Caution3.10 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-12-31
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Surface Water
- System Type
- Community Water System
- City
- CONCORD
- ZIP Code
- 94520-4907
- Counties Served
- Contra Costa
- Cities Served
- Concord
- Open Violations
- 0
- State
- California
Violation Summary
4
Total Violations
3
Health-Based
0
Open Now
Most recent violation: 1999-02-01
Explore California Water Quality
See all water systems, lead data, and violation trends for California.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: CA0710003.SafeWater Home