County Water Quality Report

Winnebago County, Wisconsin

1 public water system serving 63,000 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
50/100
Utilities rated 1
Population served 63,000

Top water quality concerns in Winnebago County

  • PFAS contaminationin 1 of 1 utilities
  • Total PFOS and PFOA significantly above health guidelinein 1 of 1 utilities
  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 1 of 1 utilities
  • Haloacetic acids (HAA9) 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.

F
50/100

OSHKOSH WATERWORKS

OSHKOSH · 63,000 residents

Top concern: PFAS contamination

View report →