Chicago
Cook County, Illinois
83 Good
Water Quality Score
83/100
Grade
B
Water Systems
2
Population
2.7M
Key Contaminants
Manganese Violation
118.7171 / 50 μg/L
0 μg/L MCL: 50 μg/L
Fluoride Violation
8.5818 / 4 mg/L
0 mg/L MCL: 4 mg/L
Chromium (Total) Violation
152.8825 / 100 μg/L
0 μg/L MCL: 100 μg/L
Lead
13.241 / 15 μg/L
0 μg/L MCL: 15 μg/L
Chlorine
3.4236 / 4 mg/L
0 mg/L MCL: 4 mg/L
Selenium
41.8473 / 50 μg/L
0 μg/L MCL: 50 μg/L
Total Trihalomethanes
43.7253 / 80 μg/L
0 μg/L MCL: 80 μg/L
Uranium
13.6564 / 30 μg/L
0 μg/L MCL: 30 μg/L
Water Systems Serving Chicago (2)
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