CASCADE COLONY
PWS ID: MT0001738 · SUN RIVER, Montana 59483
Population Served
105
Total Violations
16
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 20
- County
- Cascade
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 13
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MR | 3 | 2018 |
| Nitrate | MR | 2 | 1996 |
| Coliform (TCR) | MR | 1 | 1995 |
| Chromium | MR | 1 | 1981 |
| Fluoride | MR | 1 | 1981 |
| Mercury | MR | 1 | 1981 |
| Arsenic | MR | 1 | 1981 |
| Barium | MR | 1 | 1981 |
| Selenium | MR | 1 | 1981 |
| Cadmium | MR | 1 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.