ADVENTIST HEALTH - ST. HELENA HOSPITAL
PWS ID: CA2800625 · ST. HELENA, California 94574
Population Served
817
Total Violations
7
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 196
- County
- Napa
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 4
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 2 | 1996 |
| Coliform (TCR) | MR | 2 | 1996 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.