Illinois
Water Quality Report
85 Good
Average Score
85/100
Water Systems
2,800
Population
12.7M
Violations
1 all resolved
Score Distribution
3 A
3 B
0 C
0 D
0 F
Top Contaminant Violations
| Contaminant | Violations |
|---|---|
| Manganese | 1 |
| Uranium | 1 |
| Chromium (Total) | 1 |
| Fluoride | 1 |
Lowest Scoring Water Systems
73
Suburban Cook County Water B
IL0310002 Chicago, IL 1,500,000 served
85
City Water Light and Power Springfield B
IL1670100 Springfield, IL 114,230 served
89
Chicago Department of Water Management B
IL0310001 Chicago, IL 2,700,000 served
93
Rockford Water Division A
IL2010600 Rockford, IL 148,655 served
97
City of Aurora Water A
IL0890230 Aurora, IL 180,542 served