HILL COUNTY WATER DISTRICTS
PWS ID: MT0000249 · HINGHAM, Montana 59528
Population Served
1,720
Total Violations
380
Health-Based Violations
75
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 715
- County
- Hill
- School/Daycare
- No
- MCL Violations
- 64
- Monitoring Violations
- 298
- Treatment Tech Violations
- 11
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 34 | 2015 |
| Surface Water Treatment Rule | MR | 29 | 2008 |
| Arsenic | MR | 21 | 2003 |
| Coliform (TCR) | MR | 18 | 1995 |
| Total Haloacetic Acids (HAA5) | MCL | 18 | 2007 |
| Total Haloacetic Acids (HAA5) | MR | 17 | 2007 |
| TTHM | MR | 17 | 2007 |
| Thallium, Total | MR | 12 | 2006 |
| Beryllium, Total | MR | 12 | 2006 |
| Antimony, Total | MR | 12 | 2006 |
| Mercury | MR | 12 | 2006 |
| Barium | MR | 12 | 2006 |
| Cadmium | MR | 12 | 2006 |
| Chromium | MR | 12 | 2006 |
| Selenium | MR | 12 | 2006 |
| Nickel | MR | 12 | 2006 |
| TTHM | MCL | 12 | 2007 |
| Surface Water Treatment Rule | TT | 11 | 2005 |
| Fluoride | MR | 9 | 2003 |
| Nitrate | MR | 6 | 1999 |
| Lead and Copper Rule | MR | 5 | 2003 |
| Nitrate-Nitrite | MR | 3 | 2000 |
| p-Dichlorobenzene | MR | 3 | 2000 |
| Vinyl chloride | MR | 3 | 2000 |
| 1,1-Dichloroethylene | MR | 3 | 2000 |
| 1,2-Dichloroethane | MR | 3 | 2000 |
| 1,1,1-Trichloroethane | MR | 3 | 2000 |
| Carbon tetrachloride | MR | 3 | 2000 |
| 1,2-Dichloropropane | MR | 3 | 2000 |
| Trichloroethylene | MR | 3 | 2000 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.