CHIEF MOUNTAIN BORDER STATION
PWS ID: MT0003335 · HELENA, Montana 59626
Population Served
30
Total Violations
27
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Federal
- Connections
- 1
- County
- Glacier
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 27
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate-Nitrite | MR | 12 | 2023 |
| Coliform (TCR) | MR | 8 | 2012 |
| Revised Total Coliform Rule | MON | 4 | 2024 |
| Nitrate | MR | 3 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.