Monte Vista Wd
PWSID CA3610029 · Montclair, California · serves 56,390 people · surface water source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBA | 11 ppt | — | 9/9/2025 |
| PFBA | 9.3 ppt | — | 9/9/2025 |
| PFHxS | 7.4 ppt | 10 ppt | 3/18/2025 |
| PFHxS | 6.4 ppt | 10 ppt | 3/18/2025 |
| PFOS | 5.6 ppt | 4 ppt | 9/9/2025 |
| PFHxS | 5.4 ppt | 10 ppt | 9/9/2025 |
| PFHxS | 5.4 ppt | 10 ppt | 9/9/2025 |
| PFOS | 5.3 ppt | 4 ppt | 3/18/2025 |
| PFOS | 5 ppt | 4 ppt | 3/18/2025 |
| PFOS | 4.9 ppt | 4 ppt | 3/18/2025 |
| PFHxS | 4.5 ppt | 10 ppt | 3/18/2025 |
| PFHxS | 4.4 ppt | 10 ppt | 9/9/2025 |
| PFHxS | 4.1 ppt | 10 ppt | 9/9/2025 |
| PFPeA | 3.5 ppt | — | 9/9/2025 |
| PFHxA | 3.3 ppt | — | 9/9/2025 |
| PFHxA | 3.1 ppt | — | 12/22/2025 |
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. 🎉