Ukiah, City Of
PWSID CA2310003 · Ukiah, California · serves 16,067 people · surface water source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| 6:2 FTS | 17.8 ppt | — | 7/19/2023 |
| PFBA | 9.2 ppt | — | 1/17/2023 |
| PFOS | 7.4 ppt | 4 ppt | 1/17/2023 |
| PFHxS | 7.3 ppt | 10 ppt | 1/17/2023 |
| PFOA | 6.9 ppt | 4 ppt | 1/17/2023 |
| PFBS | 6.2 ppt | — | 1/17/2023 |
| PFPeA | 5.1 ppt | — | 1/17/2023 |
| PFOS | 4.6 ppt | 4 ppt | 7/19/2023 |
| PFOS | 4.5 ppt | 4 ppt | 10/18/2023 |
| PFHxA | 4.4 ppt | — | 1/17/2023 |
| PFOS | 4.3 ppt | 4 ppt | 10/18/2023 |
| PFOS | 4.1 ppt | 4 ppt | 7/19/2023 |
| PFBS | 4.1 ppt | — | 1/17/2023 |
| PFBS | 3.9 ppt | — | 1/17/2023 |
| PFBS | 3.6 ppt | — | 10/18/2023 |
| PFHxS | 3.6 ppt | 10 ppt | 10/18/2023 |
| PFBS | 3.4 ppt | — | 7/19/2023 |
| PFHpA | 3.3 ppt | — | 1/17/2023 |
| PFHxS | 3 ppt | 10 ppt | 7/19/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2022-10-01 | Lead and Copper Rule | MR | No | Unaddressed |