Osu Water Plant
PWSID OK1020910 · Stillwater, Oklahoma · serves 13,000 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBA | 7.9 ppt | — | 1/8/2024 |
| PFBA | 7.5 ppt | — | 10/8/2024 |
| PFBA | 6.9 ppt | — | 4/2/2024 |
| PFBA | 6.3 ppt | — | 7/8/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | TTHM | MCL | Yes | Resolved |
| 2025-06-30 | TTHM | MR | No | Resolved |
| 2025-04-01 | TTHM | MCL | Yes | Resolved |
| 2023-03-01 | Surface Water Treatment Rule | TT | Yes | Resolved |