County Water Quality Report
St. Clair County, Illinois
County average grade
F
Utilities rated
1
Population served
131,368
🇪🇺 Would fail EU standards
1 of 1
Top water quality concerns in St. Clair County
- PFAS contaminationin 1 of 1 utilities
- Haloacetic acids (HAA9) significantly above health guidelinein 1 of 1 utilities
- Haloacetic acids (HAA5) significantly above health guidelinein 1 of 1 utilities
- Total trihalomethanes (TTHMs) significantly above health guidelinein 1 of 1 utilities
- Arsenic detectedin 1 of 1 utilities
All utilities in St. Clair County
Click any utility for full grade card, contaminant data, and treatment plant contact info.