Radon Zone Map

All counties

Radon zones in Wisconsin

Adams CountyWisconsin2
Ashland CountyWisconsin2
Barron CountyWisconsin2
Bayfield CountyWisconsin2
Brown CountyWisconsin2
Buffalo CountyWisconsin1
Burnett CountyWisconsin2
Calumet CountyWisconsin2
Chippewa CountyWisconsin2
Clark CountyWisconsin2
Columbia CountyWisconsin2
Crawford CountyWisconsin1
Dane CountyWisconsin1
Dodge CountyWisconsin1
Door CountyWisconsin1
Douglas CountyWisconsin2
Dunn CountyWisconsin2
Eau Claire CountyWisconsin2
Florence CountyWisconsin2
Fond du Lac CountyWisconsin1
Forest CountyWisconsin2
Grant CountyWisconsin1
Green CountyWisconsin1
Green Lake CountyWisconsin1
Iowa CountyWisconsin1
Iron CountyWisconsin2
Jackson CountyWisconsin2
Jefferson CountyWisconsin1
Juneau CountyWisconsin2
Kenosha CountyWisconsin2
La Crosse CountyWisconsin2
Lafayette CountyWisconsin1
Langlade CountyWisconsin1
Lincoln CountyWisconsin2
Manitowoc CountyWisconsin2
Marathon CountyWisconsin1
Marinette CountyWisconsin2
Marquette CountyWisconsin2
Menominee CountyWisconsin1
Monroe CountyWisconsin2
Oconto CountyWisconsin2
Oneida CountyWisconsin2
Outagamie CountyWisconsin2
Pepin CountyWisconsin1
Pierce CountyWisconsin1
Polk CountyWisconsin2
Portage CountyWisconsin1
Price CountyWisconsin2
Racine CountyWisconsin2
Richland CountyWisconsin1
Rock CountyWisconsin1
Rusk CountyWisconsin2
Sauk CountyWisconsin2
Sawyer CountyWisconsin2
Shawano CountyWisconsin1
St. Croix CountyWisconsin1
Taylor CountyWisconsin2
Trempealeau CountyWisconsin2
Vernon CountyWisconsin1
Vilas CountyWisconsin2
Walworth CountyWisconsin1
Washburn CountyWisconsin2
Waukesha CountyWisconsin1
Waupaca CountyWisconsin1
Waushara CountyWisconsin2
Winnebago CountyWisconsin2
Wood CountyWisconsin1

Sources

  1. Wisconsin: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  2. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  3. Wisconsin: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  4. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  5. Wisconsin: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  6. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  7. Wisconsin: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  8. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  9. Wisconsin: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  10. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  11. Wisconsin: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  12. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026

"Secondary" marks a source used only because the official page could not be read.