ST CHARLES SCHOOL
PWS ID: MT0003131 · ASHLAND, Montana 59003
Population Served
152
Total Violations
1,793
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 4
- County
- Big Horn
- School/Daycare
- Yes
- MCL Violations
- 9
- Monitoring Violations
- 1,784
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| 1,2,4-Trichlorobenzene | MR | 68 | 2020 |
| cis-1,2-Dichloroethylene | MR | 68 | 2020 |
| Xylenes, Total | MR | 68 | 2020 |
| DICHLOROMETHANE | MR | 68 | 2020 |
| o-Dichlorobenzene | MR | 68 | 2020 |
| trans-1,2-Dichloroethylene | MR | 68 | 2020 |
| 1,2-Dichloroethane | MR | 68 | 2020 |
| Carbon tetrachloride | MR | 68 | 2020 |
| 1,2-Dichloropropane | MR | 68 | 2020 |
| Trichloroethylene | MR | 68 | 2020 |
| Tetrachloroethylene | MR | 68 | 2020 |
| Benzene | MR | 68 | 2020 |
| Ethylbenzene | MR | 68 | 2020 |
| Vinyl chloride | MR | 68 | 2020 |
| 1,1,1-Trichloroethane | MR | 68 | 2020 |
| 1,1,2-Trichloroethane | MR | 68 | 2020 |
| p-Dichlorobenzene | MR | 68 | 2020 |
| 1,1-Dichloroethylene | MR | 68 | 2020 |
| Toluene | MR | 68 | 2020 |
| CHLOROBENZENE | MR | 68 | 2020 |
| Styrene | MR | 68 | 2020 |
| Nitrate-Nitrite | MR | 39 | 2017 |
| Lead and Copper Rule | MR | 17 | 2024 |
| Coliform (TCR) | MR | 12 | 2000 |
| Fluoride | MR | 10 | 2011 |
| Coliform (TCR) | MCL | 9 | 2002 |
| Barium | MR | 7 | 2002 |
| Cadmium | MR | 7 | 2002 |
| Chromium | MR | 7 | 2002 |
| Mercury | MR | 7 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.