Lake Arrowhead Csd
PWSID CA3610005 · Lake Arrowhead, California · serves 7,038 people · surface water source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOA | 14 ppt | 4 ppt | 8/7/2023 |
| PFOA | 12 ppt | 4 ppt | 5/3/2023 |
| PFOA | 11 ppt | 4 ppt | 11/7/2023 |
| PFOA | 11 ppt | 4 ppt | 1/31/2024 |
| PFOA | 11 ppt | 4 ppt | 7/10/2024 |
| PFOA | 9.8 ppt | 4 ppt | 11/7/2023 |
| PFOA | 9.6 ppt | 4 ppt | 2/7/2023 |
| PFOA | 8.7 ppt | 4 ppt | 5/3/2023 |
| PFOS | 7.2 ppt | 4 ppt | 8/7/2023 |
| PFHxA | 6.7 ppt | — | 8/7/2023 |
| PFHxA | 6.6 ppt | — | 5/3/2023 |
| PFOS | 5.9 ppt | 4 ppt | 5/3/2023 |
| PFHpA | 5.7 ppt | — | 8/7/2023 |
| PFHpA | 5.6 ppt | — | 5/3/2023 |
| PFOS | 5.6 ppt | 4 ppt | 1/31/2024 |
| PFHxA | 5.4 ppt | — | 11/7/2023 |
| PFHxA | 5.3 ppt | — | 11/7/2023 |
| PFHxA | 5 ppt | — | 1/31/2024 |
| PFOS | 5 ppt | 4 ppt | 7/10/2024 |
| PFOS | 4.8 ppt | 4 ppt | 11/7/2023 |
| PFHpA | 4.8 ppt | — | 1/31/2024 |
| PFHxA | 4.8 ppt | — | 7/10/2024 |
| PFHxA | 4.7 ppt | — | 2/7/2023 |
| PFHpA | 4.7 ppt | — | 11/7/2023 |
| PFOS | 4.6 ppt | 4 ppt | 5/3/2023 |
| PFHxA | 4.6 ppt | — | 5/3/2023 |
| PFNA | 4.6 ppt | 10 ppt | 8/7/2023 |
| PFOS | 4.5 ppt | 4 ppt | 2/7/2023 |
| PFPeA | 4.5 ppt | — | 8/7/2023 |
| PFHpA | 4.4 ppt | — | 7/10/2024 |
| PFOS | 4.3 ppt | 4 ppt | 11/7/2023 |
| PFHpA | 4.3 ppt | — | 11/7/2023 |
| PFHpA | 4.1 ppt | — | 2/7/2023 |
| PFPeA | 3.9 ppt | — | 11/7/2023 |
| PFPeA | 3.9 ppt | — | 5/3/2023 |
| PFDA | 3.9 ppt | — | 8/7/2023 |
| PFPeA | 3.9 ppt | — | 1/31/2024 |
| PFHpA | 3.8 ppt | — | 5/3/2023 |
| PFPeA | 3.7 ppt | — | 5/3/2023 |
| PFPeA | 3.7 ppt | — | 7/10/2024 |
| PFPeA | 3.6 ppt | — | 11/7/2023 |
| PFPeA | 3.5 ppt | — | 2/7/2023 |
| PFDA | 3.4 ppt | — | 1/31/2024 |
| PFHxS | 3.3 ppt | 10 ppt | 8/7/2023 |
| PFDA | 3 ppt | — | 5/3/2023 |
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. 🎉