City Of Rockville
PWSID MD0150003 · Maryland · serves 52,000 people · surface water source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 6.5 ppt | — | 12/4/2023 |
| PFPeA | 6.1 ppt | — | 10/16/2023 |
| PFHxA | 5.8 ppt | — | 12/4/2023 |
| PFHxA | 5.5 ppt | — | 10/16/2023 |
| PFBA | 5.2 ppt | — | 12/4/2023 |
| PFPeA | 3.8 ppt | — | 6/7/2023 |
| PFBS | 3.6 ppt | — | 10/16/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | LEAD AND COPPER RULE REVISIONS | RPT | No | Resolved |
| 2023-07-01 | Endrin | MR | No | Resolved |
| 2023-07-01 | BHC-GAMMA | MR | No | Resolved |
| 2023-07-01 | Methoxychlor | MR | No | Resolved |
| 2023-07-01 | Toxaphene | MR | No | Resolved |
| 2023-07-01 | Di(2-ethylhexyl) adipate | MR | No | Resolved |
| 2023-07-01 | Simazine | MR | No | Resolved |
| 2023-07-01 | Di(2-ethylhexyl) phthalate | MR | No | Resolved |
| 2023-07-01 | Hexachlorocyclopentadiene | MR | No | Resolved |
| 2023-07-01 | Atrazine | MR | No | Resolved |
| 2023-07-01 | LASSO | MR | No | Resolved |
| 2023-07-01 | Heptachlor | MR | No | Resolved |
| 2023-07-01 | Heptachlor epoxide | MR | No | Resolved |
| 2023-07-01 | HEXACHLOROBENZENE | MR | No | Resolved |
| 2023-07-01 | Benzo(a)pyrene | MR | No | Resolved |
| 2023-07-01 | Chlordane | MR | No | Resolved |