WESTERN ENERGY COMPANY
PWS ID: MT0003840 · COLSTRIP, Montana 59323
Population Served
200
Total Violations
131
Health-Based Violations
7
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 3
- County
- Rosebud
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 124
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 69 | 2018 |
| Coliform (TCR) | MR | 17 | 2009 |
| Coliform (TCR) | MCL | 7 | 2000 |
| Nitrate | MR | 6 | 1998 |
| Nitrate-Nitrite | MR | 3 | 2009 |
| Fluoride | MR | 2 | 1996 |
| Chromium | MR | 2 | 1996 |
| Cadmium | MR | 2 | 1996 |
| Barium | MR | 2 | 1996 |
| Mercury | MR | 2 | 1996 |
| Selenium | MR | 2 | 1996 |
| Pentachlorophenol | MR | 1 | 1996 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 1996 |
| Carbofuran | MR | 1 | 1996 |
| Atrazine | MR | 1 | 1996 |
| 2,4,5-TP | MR | 1 | 1996 |
| 2,4-D | MR | 1 | 1996 |
| Toxaphene | MR | 1 | 1996 |
| BHC-GAMMA | MR | 1 | 1996 |
| Nickel | MR | 1 | 1996 |
| Beryllium, Total | MR | 1 | 1996 |
| Methoxychlor | MR | 1 | 1996 |
| Heptachlor epoxide | MR | 1 | 1996 |
| Heptachlor | MR | 1 | 1996 |
| Chlordane | MR | 1 | 1996 |
| Thallium, Total | MR | 1 | 1996 |
| Antimony, Total | MR | 1 | 1996 |
| LASSO | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.