HOLLISTER, CA · San Benito County
UNION HEIGHTS MWC 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)
- CA3500825
- System type
- Community Water System
- Population served
- 98
- Service connections
- 29
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Nitrite
January 1, 2009 – December 31, 2009
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
June 1, 2002 – June 30, 2002
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Nitrite | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| June 1, 2002 – June 30, 2002 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- October 9, 2010State Compliance achieved5 linked violations
- July 30, 2002State Compliance achieved12 linked violations
- August 13, 2001State Compliance achieved3 linked violations
Contact
ASH, JOHN
408-592-7884
HOLLISTER, CA 95023