OAK PARK Water Quality Report
Population
54,583
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
Top 43%
of 49,184 US systems
5-Year Record
✅ Clean
no violations
A
Safe
Safety Grade
0 violations in the past 5 years, including 2 health-based
System Details
- PWSID
- IL0312250
- Population Served
- 54,583
- Water Source
- Surface Water
- Owner
- Local Government
- State
- Illinois
- EPA Region
- 5
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 5000 | ✕ Health-Based | 2 |
Violation History
1994
1
1992
1
Total violations on record: 2
Service Area
Cities Served
ZIP Codes Served
How does this compare?
This systemNational average
Grade A
Avg: B-C
2violations total
7% of national average
National avg: ~28 per system
📍 Mid-to-large system — serves 8× the national average.