HAPPY VALLEY MHP
PWS ID: MT0000377 · MISSOULA, Montana 59807
Population Served
55
Total Violations
50
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 22
- County
- Missoula
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 32
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 19 | 2002 |
| Consumer Confidence Rule | Other | 11 | 2017 |
| Nitrate | MR | 7 | 1999 |
| Lead and Copper Rule | MR | 6 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.