PIONEER WATER SERVICE
PWS ID: MT0004226 · BILLINGS, Montana 59101
Population Served
900
Total Violations
42
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 1
- County
- Yellowstone
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 26
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 16 | 2021 |
| Coliform (TCR) | MR | 11 | 2010 |
| Lead and Copper Rule | MR | 8 | 2024 |
| Revised Total Coliform Rule | MON | 7 | 2018 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.