ROCKY MOUNTAIN WUA
PWS ID: MT0000058 · CLANCY, Montana 59634
Population Served
30
Total Violations
177
Health-Based Violations
115
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 15
- County
- Jefferson
- School/Daycare
- No
- MCL Violations
- 115
- Monitoring Violations
- 62
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Uranium | MCL | 96 | 2009 |
| Combined Uranium | MR | 27 | 2014 |
| Coliform (TCR) | MCL | 19 | 2014 |
| E. COLI | MR | 13 | 2021 |
| Coliform (TCR) | MR | 8 | 2005 |
| Revised Total Coliform Rule | MON | 3 | 2025 |
| Lead and Copper Rule | MR | 2 | 2014 |
| Cadmium | MR | 1 | 1981 |
| Barium | MR | 1 | 1981 |
| Nitrate | MR | 1 | 1981 |
| Arsenic | MR | 1 | 1981 |
| Chromium | MR | 1 | 1981 |
| Selenium | MR | 1 | 1981 |
| Mercury | MR | 1 | 1981 |
| Fluoride | MR | 1 | 1981 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.