Dcwa Knightsville (Sc1820001)
PWSID SC1820001 · Summerville, South Carolina · serves 40,141 people · surface water source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 8.1 ppt | 4 ppt | 9/24/2025 |
| PFOS | 7.9 ppt | 4 ppt | 9/11/2024 |
| PFPeA | 7.2 ppt | — | 9/11/2024 |
| PFPeA | 7 ppt | — | 9/24/2025 |
| PFOS | 6.9 ppt | 4 ppt | 6/24/2025 |
| PFOA | 6.5 ppt | 4 ppt | 9/24/2025 |
| PFHxA | 6.2 ppt | — | 9/11/2024 |
| PFHxA | 6.1 ppt | — | 9/24/2025 |
| PFOA | 6 ppt | 4 ppt | 9/11/2024 |
| PFOS | 5.8 ppt | 4 ppt | 2/14/2025 |
| PFOA | 5.5 ppt | 4 ppt | 2/14/2025 |
| PFPeA | 5.5 ppt | — | 2/14/2025 |
| PFOA | 5.4 ppt | 4 ppt | 6/24/2025 |
| PFPeA | 5.1 ppt | — | 6/24/2025 |
| PFBA | 5 ppt | — | 9/11/2024 |
| PFHxA | 5 ppt | — | 2/14/2025 |
| PFHxA | 4.8 ppt | — | 6/24/2025 |
| PFBS | 4.6 ppt | — | 9/24/2025 |
| PFBS | 4.2 ppt | — | 9/11/2024 |
| PFBS | 4.1 ppt | — | 2/14/2025 |
| PFBS | 3.5 ppt | — | 6/24/2025 |
| PFHpA | 3 ppt | — | 9/24/2025 |
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. 🎉