Duncan Public Utilities Authority
PWSID OK1010809 · Duncan, Oklahoma · serves 23,000 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBA | 7.5 ppt | — | 4/2/2024 |
| PFBA | 7.5 ppt | — | 4/2/2024 |
| PFBA | 6.2 ppt | — | 1/10/2024 |
| PFBA | 5.9 ppt | — | 1/10/2024 |
| PFBA | 5.8 ppt | — | 10/3/2023 |
| PFBA | 5.6 ppt | — | 10/3/2023 |
| PFBA | 5 ppt | — | 7/10/2024 |
| PFPeA | 3.8 ppt | — | 1/10/2024 |
| PFPeA | 3.7 ppt | — | 1/10/2024 |
| PFPeA | 3.7 ppt | — | 7/10/2024 |
| PFHpA | 3.4 ppt | — | 1/10/2024 |
| PFHxA | 3.3 ppt | — | 1/10/2024 |
| PFHpA | 3.3 ppt | — | 1/10/2024 |
| PFPeA | 3.2 ppt | — | 10/3/2023 |
| PFHpA | 3.1 ppt | — | 4/2/2024 |
| PFPeA | 3.1 ppt | — | 4/2/2024 |
| PFHxA | 3 ppt | — | 1/10/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-12-01 | Revised Total Coliform Rule | MON | No | Archived |
| 2025-11-01 | Chloramine | MR | No | Resolved |
| 2024-11-01 | Chloramine | MR | No | Resolved |
| 2024-11-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2024-10-01 | CARBON, TOTAL | TT | Yes | Archived |
| 2024-08-01 | CARBON, TOTAL | MR | No | Resolved |
| 2024-08-01 | CARBON, TOTAL | MR | No | Resolved |
| 2024-07-01 | CARBON, TOTAL | TT | Yes | Archived |
| 2024-04-01 | CARBON, TOTAL | TT | Yes | Archived |
| 2024-01-01 | CARBON, TOTAL | TT | Yes | Archived |
| 2023-01-01 | TTHM | MCL | Yes | Archived |