CONCORD, CA · Contra Costa County
CONTRA COSTA WATER DISTRICT Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA0710003
- System type
- Community Water System
- Population served
- 198,000
- Service connections
- 60,730
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Notification, Public
—No contaminant on record
October 1, 1989 – October 31, 1989
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 1989 – October 31, 1989 | Notification, Public | — | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Contact
HOBBS, MATTHEW
925-688-8192
CONCORD, CA 94520-4907