Downey - City, Water Dept.
PWSID CA1910034 · Downey, California · serves 110,556 people · groundwater source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 44 ppt | 4 ppt | 7/1/2025 |
| PFOS | 38 ppt | 4 ppt | 1/14/2025 |
| PFOS | 33 ppt | 4 ppt | 7/1/2025 |
| PFOS | 32 ppt | 4 ppt | 1/14/2025 |
| PFOS | 29 ppt | 4 ppt | 7/1/2025 |
| PFPeA | 27 ppt | — | 7/1/2025 |
| PFOS | 27 ppt | 4 ppt | 1/14/2025 |
| PFHxA | 21 ppt | — | 7/1/2025 |
| PFPeA | 19 ppt | — | 1/14/2025 |
| PFPeA | 19 ppt | — | 7/1/2025 |
| PFOS | 19 ppt | 4 ppt | 7/1/2025 |
| PFPeA | 17 ppt | — | 1/14/2025 |
| PFHxA | 15 ppt | — | 1/14/2025 |
| PFOA | 15 ppt | 4 ppt | 7/1/2025 |
| PFOS | 14 ppt | 4 ppt | 7/1/2025 |
| PFHxA | 14 ppt | — | 1/14/2025 |
| PFOS | 14 ppt | 4 ppt | 1/14/2025 |
| PFHxA | 14 ppt | — | 7/1/2025 |
| PFPeA | 14 ppt | — | 7/1/2025 |
| PFOA | 13 ppt | 4 ppt | 7/1/2025 |
| PFOS | 12 ppt | 4 ppt | 1/14/2025 |
| PFOA | 12 ppt | 4 ppt | 7/1/2025 |
| PFOA | 12 ppt | 4 ppt | 1/14/2025 |
| PFOA | 11 ppt | 4 ppt | 7/1/2025 |
| PFOA | 11 ppt | 4 ppt | 1/14/2025 |
| PFHxA | 11 ppt | — | 7/1/2025 |
| PFBA | 10 ppt | — | 7/1/2025 |
| PFPeA | 10 ppt | — | 1/14/2025 |
| PFOA | 10 ppt | 4 ppt | 1/14/2025 |
| PFOA | 10 ppt | 4 ppt | 7/1/2025 |
| PFPeA | 9.8 ppt | — | 7/1/2025 |
| PFBS | 8.9 ppt | — | 7/1/2025 |
| PFHxS | 8.9 ppt | 10 ppt | 7/1/2025 |
| PFBA | 8.8 ppt | — | 7/1/2025 |
| PFOA | 8.6 ppt | 4 ppt | 1/14/2025 |
| PFPeA | 8.4 ppt | — | 1/14/2025 |
| PFOA | 8.3 ppt | 4 ppt | 1/14/2025 |
| PFPeA | 8.1 ppt | — | 1/14/2025 |
| PFHxA | 7.9 ppt | — | 1/14/2025 |
| PFBS | 7.9 ppt | — | 7/1/2025 |
| PFBS | 7.5 ppt | — | 7/1/2025 |
| PFBA | 7.4 ppt | — | 7/1/2025 |
| PFBS | 7.2 ppt | — | 7/1/2025 |
| PFHxA | 7.2 ppt | — | 1/14/2025 |
| PFHxS | 6.9 ppt | 10 ppt | 7/1/2025 |
| PFBS | 6.8 ppt | — | 1/14/2025 |
| PFHxA | 6.7 ppt | — | 1/14/2025 |
| PFBA | 6.7 ppt | — | 1/14/2025 |
| PFBA | 6.7 ppt | — | 1/14/2025 |
| PFBS | 6.6 ppt | — | 1/14/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
No violations on record in the period covered. 🎉