CAUSEWAY CHALET
PWS ID: MT0003042 · HELENA, Montana 59602
Population Served
100
Total Violations
596
Health-Based Violations
13
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Lewis and Clark
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 583
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 318 | 2016 |
| Revised Total Coliform Rule | MON | 219 | 2025 |
| Nitrate-Nitrite | MR | 21 | 2024 |
| Nitrate | MR | 14 | 1999 |
| E. COLI | MR | 11 | 2023 |
| Coliform (TCR) | MCL | 10 | 2001 |
| Revised Total Coliform Rule | TT | 3 | 2023 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.