County Water Quality Report

Winnebago County, Illinois

1 public water system serving 147,051 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
68/100
Utilities rated 1
Population served 147,051
🇪🇺 Would fail EU standards 1 of 1

Top water quality concerns in Winnebago County

  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 1 of 1 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 1 of 1 utilities
  • Arsenic significantly above health guidelinein 1 of 1 utilities

All utilities in Winnebago County

Click any utility for full grade card, contaminant data, and treatment plant contact info.

C
68/100

ROCKFORD

ROCKFORD · 147,051 residents

Top concern: Perfluorohexane sulfonate (PFHXS) significantly above health guideline

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