DEVON WATER INC
PWS ID: MT0000200 · SHELBY, Montana 59474
Population Served
75
Total Violations
787
Health-Based Violations
58
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 24
- County
- Toole
- School/Daycare
- No
- MCL Violations
- 56
- Monitoring Violations
- 707
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MR | 31 | 2017 |
| Total Haloacetic Acids (HAA5) | MCL | 30 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 26 | 2020 |
| TTHM | MR | 26 | 2020 |
| TTHM | MCL | 26 | 2019 |
| Lead and Copper Rule | MR | 24 | 2025 |
| Xylenes, Total | MR | 20 | 2019 |
| p-Dichlorobenzene | MR | 20 | 2019 |
| Vinyl chloride | MR | 20 | 2019 |
| o-Dichlorobenzene | MR | 20 | 2019 |
| CHLOROBENZENE | MR | 20 | 2019 |
| 1,1,2-Trichloroethane | MR | 20 | 2019 |
| 1,2-Dichloropropane | MR | 20 | 2019 |
| cis-1,2-Dichloroethylene | MR | 20 | 2019 |
| trans-1,2-Dichloroethylene | MR | 20 | 2019 |
| 1,1-Dichloroethylene | MR | 20 | 2019 |
| Trichloroethylene | MR | 20 | 2019 |
| Benzene | MR | 20 | 2019 |
| 1,2-Dichloroethane | MR | 20 | 2019 |
| 1,1,1-Trichloroethane | MR | 20 | 2019 |
| Carbon tetrachloride | MR | 20 | 2019 |
| Tetrachloroethylene | MR | 20 | 2019 |
| Toluene | MR | 20 | 2019 |
| Styrene | MR | 20 | 2019 |
| 1,2,4-Trichlorobenzene | MR | 20 | 2019 |
| Consumer Confidence Rule | Other | 20 | 2024 |
| Ethylbenzene | MR | 20 | 2019 |
| DICHLOROMETHANE | MR | 19 | 2019 |
| Surface Water Treatment Rule | MR | 18 | 2008 |
| Thallium, Total | MR | 16 | 2014 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.