Town Of Mount Airy
PWSID MD0060007 · Mount Airy, Maryland · serves 9,890 people · groundwater source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 22.7 ppt | — | 10/11/2023 |
| PFHxA | 18.4 ppt | — | 10/11/2023 |
| PFOA | 12.7 ppt | 4 ppt | 10/11/2023 |
| PFBA | 11.6 ppt | — | 10/11/2023 |
| PFBS | 6.6 ppt | — | 10/11/2023 |
| PFBS | 6.3 ppt | — | 6/6/2023 |
| PFOS | 6 ppt | 4 ppt | 4/12/2023 |
| PFOA | 6 ppt | 4 ppt | 10/11/2023 |
| PFPeA | 6 ppt | — | 10/11/2023 |
| PFOS | 5.9 ppt | 4 ppt | 10/11/2023 |
| PFHpA | 5.9 ppt | — | 10/11/2023 |
| PFPeA | 5.3 ppt | — | 4/12/2023 |
| PFHxA | 5.2 ppt | — | 10/11/2023 |
| PFOA | 5.1 ppt | 4 ppt | 4/12/2023 |
| PFPeA | 4.9 ppt | — | 10/11/2023 |
| PFPeA | 4.8 ppt | — | 4/12/2023 |
| PFHxA | 4.7 ppt | — | 4/12/2023 |
| PFPeA | 4.6 ppt | — | 6/6/2023 |
| PFHxA | 4.6 ppt | — | 4/12/2023 |
| PFHxA | 4.6 ppt | — | 4/12/2023 |
| PFHxA | 4.5 ppt | — | 10/11/2023 |
| PFOA | 4.5 ppt | 4 ppt | 10/11/2023 |
| PFPeA | 4.4 ppt | — | 4/12/2023 |
| PFOA | 4.4 ppt | 4 ppt | 4/12/2023 |
| PFHxA | 4.2 ppt | — | 10/11/2023 |
| PFOA | 4.2 ppt | 4 ppt | 4/12/2023 |
| PFPeA | 4.2 ppt | — | 10/11/2023 |
| PFHxA | 4.1 ppt | — | 6/6/2023 |
| PFOA | 4 ppt | 4 ppt | 10/11/2023 |
| PFBS | 4 ppt | — | 10/11/2023 |
| PFBS | 3.9 ppt | — | 4/12/2023 |
| PFBS | 3.8 ppt | — | 4/12/2023 |
| PFHpA | 3 ppt | — | 10/11/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | Lead and Copper Rule | MR | No | Resolved |
| 2022-01-01 | Fluoride | MR | No | Resolved |
| 2022-01-01 | Fluoride | MR | No | Resolved |