Cliffdale West
PWSID NC0326332 · Cary, North Carolina · serves 15,220 people · groundwater source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 19.5 ppt | 4 ppt | 8/19/2025 |
| PFOA | 16.3 ppt | 4 ppt | 2/5/2025 |
| PFOS | 16.1 ppt | 4 ppt | 8/25/2025 |
| PFOA | 16 ppt | 4 ppt | 8/19/2025 |
| PFOS | 15.3 ppt | 4 ppt | 2/5/2025 |
| PFOS | 15.1 ppt | 4 ppt | 2/4/2025 |
| PFOS | 15 ppt | 4 ppt | 2/5/2025 |
| PFOS | 14.5 ppt | 4 ppt | 8/19/2025 |
| PFOS | 13.8 ppt | 4 ppt | 2/10/2025 |
| PFOS | 13.8 ppt | 4 ppt | 8/19/2025 |
| PFOA | 13.7 ppt | 4 ppt | 2/10/2025 |
| PFOS | 13.2 ppt | 4 ppt | 2/10/2025 |
| PFHxS | 12.5 ppt | 10 ppt | 8/20/2025 |
| PFHxS | 12.2 ppt | 10 ppt | 2/4/2025 |
| PFOA | 12.1 ppt | 4 ppt | 8/19/2025 |
| PFOA | 11.9 ppt | 4 ppt | 8/19/2025 |
| PFOA | 11.7 ppt | 4 ppt | 2/10/2025 |
| PFHxS | 11.6 ppt | 10 ppt | 2/10/2025 |
| PFHxS | 11.6 ppt | 10 ppt | 8/19/2025 |
| PFOA | 11.5 ppt | 4 ppt | 8/19/2025 |
| PFOA | 11.4 ppt | 4 ppt | 2/5/2025 |
| PFHxS | 11.2 ppt | 10 ppt | 2/5/2025 |
| PFBS | 10.8 ppt | — | 8/19/2025 |
| PFHxS | 10.5 ppt | 10 ppt | 8/19/2025 |
| PFBS | 10.4 ppt | — | 2/10/2025 |
| PFHxA | 10.2 ppt | — | 8/19/2025 |
| PFBS | 10.1 ppt | — | 2/5/2025 |
| PFBS | 10.1 ppt | — | 8/19/2025 |
| PFHxA | 9.8 ppt | — | 2/5/2025 |
| PFOS | 9.8 ppt | 4 ppt | 2/10/2025 |
| PFOS | 9.8 ppt | 4 ppt | 8/19/2025 |
| PFHxS | 9.5 ppt | 10 ppt | 8/25/2025 |
| PFOS | 9.5 ppt | 4 ppt | 2/5/2025 |
| PFHxS | 9.3 ppt | 10 ppt | 2/4/2025 |
| PFOS | 9.3 ppt | 4 ppt | 8/19/2025 |
| PFOA | 9 ppt | 4 ppt | 8/25/2025 |
| PFOA | 9 ppt | 4 ppt | 8/19/2025 |
| PFHxS | 8.9 ppt | 10 ppt | 2/4/2025 |
| PFPeA | 8.7 ppt | — | 8/19/2025 |
| PFPeA | 8.5 ppt | — | 2/5/2025 |
| PFHxS | 8.4 ppt | 10 ppt | 2/10/2025 |
| PFOA | 8.4 ppt | 4 ppt | 8/19/2025 |
| PFOA | 8.4 ppt | 4 ppt | 2/4/2025 |
| PFOA | 8.4 ppt | 4 ppt | 2/5/2025 |
| PFOS | 8.3 ppt | 4 ppt | 2/5/2025 |
| PFOA | 8.3 ppt | 4 ppt | 2/10/2025 |
| PFHxS | 8.3 ppt | 10 ppt | 8/18/2025 |
| PFBS | 8.1 ppt | — | 2/4/2025 |
| PFHxS | 7.9 ppt | 10 ppt | 8/19/2025 |
| PFBS | 7.9 ppt | — | 8/19/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2024-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2022-07-01 | Arsenic | MCL | Yes | Archived |