Ottawa
PWSID IL0990800 · Ottawa, Illinois · serves 18,097 people · groundwater source
C
Fair
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | TTHM | MR | No | Resolved |
| 2025-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2025-07-02 | LEAD AND COPPER RULE REVISIONS | RPT | No | Resolved |
| 2023-07-01 | Combined Radium (-226 and -228) | MCL | Yes | Resolved |
| 2023-01-01 | TTHM | MR | No | Resolved |
| 2023-01-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2022-10-01 | Combined Radium (-226 and -228) | MR | No | Resolved |
| 2022-07-01 | Combined Radium (-226 and -228) | MR | No | Resolved |
| 2022-01-01 | TTHM | MR | No | Resolved |
| 2022-01-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |