County Water Quality Report
Johnson County, Iowa
County average grade
C
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.