MOUNTAIN HOUSE, CA · San Joaquin County
CITY OF MOUNTAIN HOUSE 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)
- CA3910027
- System type
- Community Water System
- Population served
- 24,948
- Service connections
- 7,559
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Maximum Contaminant Level Violation, Average
Health-basedTTHM
January 1, 2005 – March 31, 2005
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2005 – March 31, 2005 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- April 30, 2006State Compliance achieved3 linked violations
Contact
MORGAN, KAREN
209-831-5648
MOUNTAIN HOUSE, CA 95391