Rock Falls
PWSID IL1950450 · Rock Falls, Illinois · serves 8,620 people · groundwater source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBA | 11 ppt | — | 4/7/2025 |
| PFBA | 9.7 ppt | — | 12/1/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2023-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2023-04-01 | Chlorine | MR | No | Resolved |
| 2022-12-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2022-10-01 | Chlorine | MR | No | Resolved |
| 2022-07-01 | Consumer Confidence Rule | Other | No | Resolved |