LITTLE BIGHORN BATTLEFIELD NM
PWS ID: MT0000191 · CROW AGENCY, Montana 59022
Population Served
2,020
Total Violations
42
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Federal
- Connections
- 11
- County
- Big Horn
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 42
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 12 | 2020 |
| Nitrate-Nitrite | MR | 8 | 2022 |
| Coliform (TCR) | MR | 7 | 2011 |
| TTHM | MR | 6 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2021 |
| Asbestos | MR | 2 | 2011 |
| Fluoride | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.