HINSDALE WATER DEPARTMENT
PWS ID: MT0000250 · HINSDALE, Montana 59241
Population Served
250
Total Violations
116
Health-Based Violations
27
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 137
- County
- Valley
- School/Daycare
- No
- MCL Violations
- 22
- Monitoring Violations
- 69
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 22 | 2015 |
| Consumer Confidence Rule | Other | 19 | 2025 |
| Nitrate-Nitrite | MR | 10 | 2017 |
| E. COLI | MR | 9 | 2019 |
| Revised Total Coliform Rule | MON | 9 | 2025 |
| Coliform (TCR) | MR | 8 | 2005 |
| Lead and Copper Rule | MR | 7 | 2015 |
| Revised Total Coliform Rule | TT | 5 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2005 |
| TTHM | MR | 5 | 2005 |
| Arsenic | MR | 3 | 2002 |
| Beryllium, Total | MR | 3 | 2002 |
| Thallium, Total | MR | 3 | 2002 |
| Nickel | MR | 3 | 2002 |
| Antimony, Total | MR | 3 | 2002 |
| Nitrate | MR | 1 | 1994 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.