TWIN HILLS COLONY INC
PWS ID: MT0003978 · CARTER, Montana 59420
Population Served
78
Total Violations
101
Health-Based Violations
34
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 19
- County
- Chouteau
- School/Daycare
- No
- MCL Violations
- 34
- Monitoring Violations
- 65
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 18 | 2020 |
| TTHM | MR | 16 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 16 | 2022 |
| TTHM | MCL | 16 | 2020 |
| Lead and Copper Rule | MR | 15 | 2024 |
| Coliform (TCR) | MR | 9 | 2014 |
| Surface Water Treatment Rule | MR | 6 | 2024 |
| Revised Total Coliform Rule | MON | 3 | 2024 |
| Consumer Confidence Rule | Other | 2 | 2019 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.