TRI COUNTY WATER DISTRICT
PWS ID: MT0002912 · POWER, Montana 59468
Population Served
470
Total Violations
215
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 177
- County
- Teton
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 205
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MR | 10 | 2014 |
| Consumer Confidence Rule | Other | 9 | 2023 |
| Combined Radium (-226 and -228) | MR | 9 | 2012 |
| Lead and Copper Rule | MR | 9 | 2024 |
| Nickel | MR | 4 | 2014 |
| Beryllium, Total | MR | 4 | 2014 |
| Thallium, Total | MR | 4 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2023 |
| Antimony, Total | MR | 4 | 2014 |
| TTHM | MR | 4 | 2023 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2010 |
| Xylenes, Total | MR | 3 | 2010 |
| o-Dichlorobenzene | MR | 3 | 2010 |
| p-Dichlorobenzene | MR | 3 | 2010 |
| trans-1,2-Dichloroethylene | MR | 3 | 2010 |
| 1,1,1-Trichloroethane | MR | 3 | 2010 |
| Carbon tetrachloride | MR | 3 | 2010 |
| 1,1,2-Trichloroethane | MR | 3 | 2010 |
| CHLOROBENZENE | MR | 3 | 2010 |
| Ethylbenzene | MR | 3 | 2010 |
| Styrene | MR | 3 | 2010 |
| Endrin | MR | 3 | 2008 |
| BHC-GAMMA | MR | 3 | 2008 |
| Methoxychlor | MR | 3 | 2008 |
| Dalapon | MR | 3 | 2008 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2008 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2008 |
| Picloram | MR | 3 | 2008 |
| Dinoseb | MR | 3 | 2008 |
| Hexachlorocyclopentadiene | MR | 3 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.