BIG ARM FLATHEAD LAKE MT ST PK
PWS ID: MT0042403 · KALISPELL, Montana 59901
Population Served
75
Total Violations
61
Health-Based Violations
30
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 20
- County
- Lake
- School/Daycare
- No
- MCL Violations
- 21
- Monitoring Violations
- 31
- Treatment Tech Violations
- 9
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Groundwater Rule | MR | 27 | 2018 |
| Coliform (TCR) | MCL | 21 | 2011 |
| Groundwater Rule | TT | 9 | 2018 |
| Coliform (TCR) | MR | 4 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.