WELCOME GRANGE HALL
PWS ID: CA2800583 · NAPA, California 94558
Population Served
200
Total Violations
35
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Napa
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 32
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 12 | 2023 |
| Coliform (TCR) | MR | 10 | 2014 |
| Revised Total Coliform Rule | MON | 10 | 2022 |
| Nitrate | MCL | 1 | 2022 |
| Nitrate | Other | 1 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.