County Water Quality Report

Johnson County, Iowa

1 public water system serving 68,753 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
65/100
Utilities rated 1
Population served 68,753

Top water quality concerns in Johnson County

  • Haloacetic acids (HAA9) significantly above health guidelinein 1 of 1 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 1 of 1 utilities
  • Bromodichloromethane significantly above health guidelinein 1 of 1 utilities

All utilities in Johnson County

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

C
65/100

IOWA CITY WATER DEPARTMENT

IOWA CITY · 68,753 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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