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Map of Radon Zones in Wisconsin based on Environmental Protection Agency (EPA) data

Back to Radon Zones in the United States




Radon zones
 Zone 3 (0 counties)
 Zone 2 (48 counties)
 Zone 1 (29 counties)
  Highest Potential: counties have a predicted average indoor radon screening level greater than 4 pCi/L (pico curies per liter) (red zones)
  Moderate Potential: counties have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones)
  Low Potential: counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones)
Adams County
Radon zone : 2

Ashland County
Radon zone : 2

Barron County
Radon zone : 2

Bayfield County
Radon zone : 2

Brown County
Radon zone : 2

Buffalo County
Radon zone : 1

Burnett County
Radon zone : 2

Calumet County
Radon zone : 2

Chippewa County
Radon zone : 2

Clark County
Radon zone : 2

Columbia County
Radon zone : 2

Crawford County
Radon zone : 1

Dane County
Radon zone : 1

Dodge County
Radon zone : 1

Door County
Radon zone : 1

Douglas County
Radon zone : 2

Dunn County
Radon zone : 2

Eau Claire County
Radon zone : 2

Florence County
Radon zone : 2

Fond du Lac County
Radon zone : 1

Forest County
Radon zone : 2

Grant County
Radon zone : 1

Green County
Radon zone : 1

Green Lake County
Radon zone : 1

Iowa County
Radon zone : 1

Iron County
Radon zone : 2

Jackson County
Radon zone : 2

Jefferson County
Radon zone : 1

Juneau County
Radon zone : 2

Kenosha County
Radon zone : 2

Kewaunee County
Radon zone : 2

La Crosse County
Radon zone : 2

Lafayette County
Radon zone : 1

Langlade County
Radon zone : 1

Lincoln County
Radon zone : 2

Manitowoc County
Radon zone : 2

Marathon County
Radon zone : 1

Marinette County
Radon zone : 2

Marquette County
Radon zone : 2

Menominee County
Radon zone : 1

Milwaukee County
Radon zone : 2

Monroe County
Radon zone : 2

Oconto County
Radon zone : 2

Oneida County
Radon zone : 2

Outagamie County
Radon zone : 2

Ozaukee County
Radon zone : 2

Pepin County
Radon zone : 1

Pierce County
Radon zone : 1

Polk County
Radon zone : 2

Portage County
Radon zone : 1

Price County
Radon zone : 2

Racine County
Radon zone : 2

Richland County
Radon zone : 1

Rock County
Radon zone : 1

Rusk County
Radon zone : 2

Sauk County
Radon zone : 2

Sawyer County
Radon zone : 2

Shawano County
Radon zone : 1

Sheboygan County
Radon zone : 2

St. Croix County
Radon zone : 1

Taylor County
Radon zone : 2

Trempealeau County
Radon zone : 2

Vernon County
Radon zone : 1

Vilas County
Radon zone : 2

Walworth County
Radon zone : 1

Washburn County
Radon zone : 2

Washington County
Radon zone : 1

Waukesha County
Radon zone : 1

Waupaca County
Radon zone : 1

Waushara County
Radon zone : 2

Winnebago County
Radon zone : 2

Wood County
Radon zone : 1


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