POTEAU VALLEY IMPROVEMENT AUTHORITY
PWS ID: OK1020104 · WISTER, Oklahoma 74966-9124
Population Served
10
Total Violations
121
Health-Based Violations
61
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 147
- County
- Le Flore
- School/Daycare
- No
- MCL Violations
- 51
- Monitoring Violations
- 32
- Treatment Tech Violations
- 10
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 33 | 2023 |
| Total Haloacetic Acids (HAA5) | MCL | 13 | 2025 |
| Chlorite | MR | 10 | 2023 |
| Surface Water Treatment Rule | TT | 5 | 2018 |
| Coliform (TCR) | MCL | 5 | 2007 |
| Coliform (TCR) | MR | 5 | 2009 |
| Surface Water Treatment Rule | MR | 5 | 2017 |
| Glyphosate | MR | 4 | 2024 |
| 2,4-D | MR | 4 | 2024 |
| Atrazine | MR | 4 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | TT | 3 | 2025 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.