ANTELOPE COUNTY WATER AND SEWER
PWS ID: MT0003203 · ANTELOPE, Montana 59211
Population Served
59
Total Violations
133
Health-Based Violations
57
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 36
- County
- Sheridan
- School/Daycare
- No
- MCL Violations
- 57
- Monitoring Violations
- 61
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 29 | 2015 |
| Total Haloacetic Acids (HAA5) | MCL | 24 | 2015 |
| Revised Total Coliform Rule | MON | 15 | 2024 |
| Coliform (TCR) | MR | 11 | 2001 |
| Lead and Copper Rule | MR | 9 | 2013 |
| Consumer Confidence Rule | Other | 9 | 2021 |
| Chlorine | MR | 7 | 2014 |
| TTHM | MR | 6 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2023 |
| E. COLI | MR | 4 | 2012 |
| Coliform (TCR) | MCL | 4 | 1999 |
| Nitrate-Nitrite | MR | 3 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.