Porterville, City Of
PWSID CA5410010 · Porterville, California · serves 63,487 people · groundwater source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 23 ppt | 4 ppt | 11/20/2023 |
| PFOA | 22 ppt | 4 ppt | 11/20/2023 |
| PFOA | 20 ppt | 4 ppt | 5/15/2023 |
| PFOS | 12 ppt | 4 ppt | 11/20/2023 |
| PFOS | 11 ppt | 4 ppt | 5/15/2023 |
| PFOS | 11 ppt | 4 ppt | 5/15/2023 |
| PFPeA | 9.3 ppt | — | 5/15/2023 |
| PFOS | 9.1 ppt | 4 ppt | 5/22/2023 |
| PFBS | 9.1 ppt | — | 5/22/2023 |
| PFPeA | 9 ppt | — | 11/20/2023 |
| PFHxA | 8.5 ppt | — | 11/20/2023 |
| PFHxA | 7.9 ppt | — | 5/15/2023 |
| PFHpA | 6.5 ppt | — | 11/20/2023 |
| PFOS | 6.2 ppt | 4 ppt | 5/15/2023 |
| PFHpA | 5.9 ppt | — | 5/15/2023 |
| PFOS | 5.8 ppt | 4 ppt | 11/20/2023 |
| PFBA | 5.8 ppt | — | 5/15/2023 |
| PFOS | 5.7 ppt | 4 ppt | 11/20/2023 |
| PFOS | 5.5 ppt | 4 ppt | 11/20/2023 |
| PFBS | 5.5 ppt | — | 5/15/2023 |
| PFBS | 5.4 ppt | — | 11/20/2023 |
| PFBS | 5.3 ppt | — | 5/22/2023 |
| PFOS | 5.3 ppt | 4 ppt | 5/22/2023 |
| PFBA | 5.1 ppt | — | 11/20/2023 |
| PFOS | 4.9 ppt | 4 ppt | 5/15/2023 |
| PFBS | 4.7 ppt | — | 11/20/2023 |
| PFOS | 4 ppt | 4 ppt | 5/22/2023 |
| PFOS | 4 ppt | 4 ppt | 11/20/2023 |
| PFHxS | 3.6 ppt | 10 ppt | 11/20/2023 |
| PFHxS | 3.4 ppt | 10 ppt | 5/22/2023 |
| PFHxS | 3.3 ppt | 10 ppt | 5/15/2023 |
| PFHxS | 3.2 ppt | 10 ppt | 11/20/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | TT | Yes | Unaddressed |
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | RPT | No | Unaddressed |