SUN PRAIRIE WATER DISTRICT
PWS ID: MT0000571 · GREAT FALLS, Montana 59404
Population Served
350
Total Violations
94
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 103
- County
- Cascade
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 77
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 13 | 2023 |
| Coliform (TCR) | MR | 10 | 1997 |
| Thallium, Total | MR | 7 | 2020 |
| Revised Total Coliform Rule | MON | 6 | 2021 |
| Nickel | MR | 4 | 1999 |
| Antimony, Total | MR | 4 | 1999 |
| Arsenic | MR | 4 | 1999 |
| Lead and Copper Rule | MR | 4 | 2020 |
| Beryllium, Total | MR | 4 | 1999 |
| TTHM | MR | 3 | 2009 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2009 |
| Chlorine | MR | 3 | 2012 |
| Revised Total Coliform Rule | Other | 3 | 2016 |
| Benzo(a)pyrene | MR | 1 | 1996 |
| Dinoseb | MR | 1 | 1996 |
| Pentachlorophenol | MR | 1 | 1996 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 1996 |
| Heptachlor epoxide | MR | 1 | 1996 |
| Heptachlor | MR | 1 | 1996 |
| Chlordane | MR | 1 | 1996 |
| Atrazine | MR | 1 | 1996 |
| Aldicarb sulfone | MR | 1 | 1996 |
| LASSO | MR | 1 | 1996 |
| 2,4-D | MR | 1 | 1996 |
| Methoxychlor | MR | 1 | 1996 |
| Endrin | MR | 1 | 1996 |
| Nitrate | MR | 1 | 1998 |
| Carbofuran | MR | 1 | 1996 |
| Aldicarb | MR | 1 | 1996 |
| Toxaphene | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.