Blackwell Municipal Authority
PWSID OK1021101 · Blackwell, Oklahoma · serves 7,668 people · surface water source
F
Failing
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2025-06-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2025-05-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2025-05-01 | Chlorine dioxide | MR | No | Resolved |
| 2025-04-01 | TTHM | MR | No | Resolved |
| 2025-01-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-06-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-03-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-03-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2023-01-01 | TTHM | MCL | Yes | Resolved |
| 2022-10-01 | TTHM | MCL | Yes | Resolved |
| 2022-09-01 | Surface Water Treatment Rule | TT | Yes | Resolved |