Presidio Of San Francisco
PWSID CA3810700 · San Francisco, California · serves 3,500 people · surface water source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 8.9 ppt | — | 3/11/2025 |
| PFPeA | 7.6 ppt | — | 12/2/2025 |
| PFPeA | 7 ppt | — | 9/15/2025 |
| PFHxA | 6.8 ppt | — | 3/11/2025 |
| PFPeA | 6.8 ppt | — | 6/10/2025 |
| PFHxA | 6.3 ppt | — | 12/2/2025 |
| PFBA | 6.2 ppt | — | 3/11/2025 |
| PFHxA | 5.9 ppt | — | 9/15/2025 |
| PFHxA | 5.8 ppt | — | 6/10/2025 |
| PFBS | 4.9 ppt | — | 3/11/2025 |
| PFHxS | 4.6 ppt | 10 ppt | 3/11/2025 |
| PFBS | 4.6 ppt | — | 9/15/2025 |
| PFBS | 4.5 ppt | — | 12/2/2025 |
| PFBS | 4.4 ppt | — | 6/10/2025 |
| PFHxS | 4.2 ppt | 10 ppt | 12/2/2025 |
| PFHxS | 4.1 ppt | 10 ppt | 9/15/2025 |
| PFOA | 4 ppt | 4 ppt | 3/11/2025 |
| PFHxS | 3.9 ppt | 10 ppt | 6/10/2025 |
| PFHpA | 3.1 ppt | — | 3/11/2025 |
| PFHpA | 3 ppt | — | 12/2/2025 |
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. 🎉