Great Oaks Wc Inc
PWSID CA4310022 · San Jose, California · serves 112,582 people · groundwater source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFHxS | 8 ppt | 10 ppt | 12/17/2025 |
| PFHxS | 6.6 ppt | 10 ppt | 12/16/2025 |
| PFHxS | 5.4 ppt | 10 ppt | 6/24/2025 |
| PFHxS | 5 ppt | 10 ppt | 6/24/2025 |
| PFPeA | 4.7 ppt | — | 12/17/2025 |
| PFOS | 4.6 ppt | 4 ppt | 12/17/2025 |
| PFHxS | 4.6 ppt | 10 ppt | 6/24/2025 |
| PFPeA | 4.5 ppt | — | 6/25/2025 |
| PFHxA | 4.5 ppt | — | 12/17/2025 |
| PFHxA | 4.3 ppt | — | 12/17/2025 |
| PFHxA | 4 ppt | — | 6/25/2025 |
| PFPeA | 3.9 ppt | — | 12/17/2025 |
| PFHxA | 3.6 ppt | — | 6/25/2025 |
| PFPeA | 3.6 ppt | — | 6/25/2025 |
| PFPeA | 3.6 ppt | — | 6/25/2025 |
| PFHxA | 3.2 ppt | — | 6/25/2025 |
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. 🎉