Northbrook
PWSID IL0312070 · Northbrook, Illinois · serves 34,200 people · surface water source
A
Excellent
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2026-04-01 | Endothall | MR | No | Archived |
| 2026-04-01 | Diquat | MR | No | Archived |
| 2023-07-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |