Siler City, Town Of
PWSID NC0319010 · Sanford, North Carolina · serves 8,520 people · surface water source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 12.1 ppt | 4 ppt | 8/13/2025 |
| PFOS | 11.7 ppt | 4 ppt | 8/13/2025 |
| PFOS | 6.9 ppt | 4 ppt | 5/13/2025 |
| PFOS | 6.8 ppt | 4 ppt | 5/13/2025 |
| PFOS | 5.1 ppt | 4 ppt | 2/10/2025 |
| PFOA | 4.7 ppt | 4 ppt | 2/10/2025 |
| PFOS | 4.6 ppt | 4 ppt | 11/12/2025 |
| PFOS | 4.6 ppt | 4 ppt | 11/12/2025 |
| PFOA | 4.5 ppt | 4 ppt | 8/13/2025 |
| PFOA | 4.3 ppt | 4 ppt | 5/13/2025 |
| PFOA | 4.2 ppt | 4 ppt | 5/13/2025 |
| PFOA | 4.1 ppt | 4 ppt | 8/13/2025 |
| PFPeA | 3.4 ppt | — | 8/13/2025 |
| PFPeA | 3.4 ppt | — | 8/13/2025 |
| PFHxA | 3.2 ppt | — | 2/10/2025 |
| PFPeA | 3.2 ppt | — | 5/13/2025 |
| PFHxA | 3.1 ppt | — | 5/13/2025 |
| PFPeA | 3.1 ppt | — | 5/13/2025 |
| PFHxA | 3.1 ppt | — | 5/13/2025 |
| PFPeA | 3 ppt | — | 2/10/2025 |
| PFPeA | 3 ppt | — | 2/10/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2026-01-01 | Lead and Copper Rule | MR | No | Addressed |
| 2022-01-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2022-01-01 | Chlorine | MR | No | Resolved |