SUNSET WEST RSID
PWS ID: MT0001857 · MISSOULA, Montana 59808
Population Served
105
Total Violations
101
Health-Based Violations
56
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 42
- County
- Missoula
- School/Daycare
- No
- MCL Violations
- 56
- Monitoring Violations
- 31
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 56 | 2014 |
| Coliform (TCR) | MR | 10 | 2001 |
| Lead and Copper Rule | MR | 4 | 2007 |
| Nitrate | MR | 3 | 1993 |
| Arsenic | MR | 2 | 1981 |
| Chromium | MR | 2 | 1981 |
| Mercury | MR | 2 | 1981 |
| Barium | MR | 2 | 1981 |
| Selenium | MR | 2 | 1981 |
| Fluoride | MR | 2 | 1981 |
| Cadmium | MR | 2 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.