MONTANA STATE PRISON
PWS ID: MT0000198 · DEER LODGE, Montana 59722
Population Served
2,100
Total Violations
62
Health-Based Violations
12
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- State
- Connections
- 53
- County
- Powell
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 45
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 12 | 2015 |
| Coliform (TCR) | MR | 11 | 2011 |
| Lead and Copper Rule | MR | 10 | 2024 |
| Revised Total Coliform Rule | MON | 6 | 2025 |
| Arsenic | MR | 5 | 1999 |
| Asbestos | MR | 5 | 2020 |
| E. COLI | MR | 3 | 2024 |
| Consumer Confidence Rule | Other | 2 | 2025 |
| Nitrate | MR | 1 | 1997 |
| Thallium, Total | MR | 1 | 1996 |
| Nickel | MR | 1 | 1996 |
| Beryllium, Total | MR | 1 | 1996 |
| Antimony, Total | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.