Oak Brook
PWSID: IL0430700
System Details
| Population Served | 9,400 |
| Service Connections | 3,295 |
| Water Source | Surface Water Purchased |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Oak Brook |
| Zip Code | 60523 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0029 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0021 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0008 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
Violation History (9 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2024-07-01 | Major | Returned to Compliance |
| | 2024-07-01 | Major | Acknowledged |
| | 2024-07-01 | Major | Returned to Compliance |
| | 2024-07-01 | Major | Returned to Compliance |
| | 2024-07-01 | | Returned to Compliance |
| | 2023-10-01 | | Returned to Compliance |
| | 2023-10-01 | | Returned to Compliance |
| | 2023-10-01 | | Returned to Compliance |
| | 2023-10-01 | | Returned to Compliance |