HIGH QUALITY H2O
PWS ID: MT0002540 · MISSOULA, Montana 59806
Population Served
200
Total Violations
203
Health-Based Violations
20
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 36
- County
- Missoula
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 181
- Treatment Tech Violations
- 10
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Groundwater Rule | TT | 10 | 2022 |
| Coliform (TCR) | MR | 6 | 1999 |
| Coliform (TCR) | MCL | 6 | 2000 |
| Revised Total Coliform Rule | MCL | 4 | 2022 |
| Arsenic | MR | 3 | 2002 |
| Fluoride | MR | 3 | 2002 |
| Mercury | MR | 3 | 2002 |
| Antimony, Total | MR | 3 | 2002 |
| Thallium, Total | MR | 3 | 2002 |
| Selenium | MR | 3 | 2002 |
| Endrin | MR | 3 | 2002 |
| BHC-GAMMA | MR | 3 | 2002 |
| Methoxychlor | MR | 3 | 2002 |
| Toxaphene | MR | 3 | 2002 |
| Dalapon | MR | 3 | 2002 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2002 |
| Picloram | MR | 3 | 2002 |
| Aldicarb sulfone | MR | 3 | 2002 |
| Carbofuran | MR | 3 | 2002 |
| LASSO | MR | 3 | 2002 |
| Heptachlor | MR | 3 | 2002 |
| Heptachlor epoxide | MR | 3 | 2002 |
| 2,4-D | MR | 3 | 2002 |
| 2,4,5-TP | MR | 3 | 2002 |
| Benzo(a)pyrene | MR | 3 | 2002 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2002 |
| Chlordane | MR | 3 | 2002 |
| DICHLOROMETHANE | MR | 3 | 2002 |
| o-Dichlorobenzene | MR | 3 | 2002 |
| p-Dichlorobenzene | MR | 3 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.