IMPORTANT: Consult the publication entitled "Preliminary Geologic Radon
Potential Assessment of Wisconsin" (USGS Open-file Report 93-292-E)
before using this map. http://energy.cr.usgs.gov/radon/grpinfo.html This
document contains information on radon potential variations within
counties. EPA also recommends that this map be supplemented with any
available local data in order to further understand and predict the radon
potential of a specific area.
Zone 1 Zone 2 Zone 3
BAYFIELD
DOUGLAS
ASHLAND
VILAS
SAWYER
WASHBURN I
BURNETT
ONEIDA
PRICE
MARINETTE
RUSK
POLK
BARRON
LINCOLN
LANGLADE
TAYLOR
CHIPPEWA
OCONTO
ST CROIX
DOOR
SHAWANO
CLARK
EAU CLAIRE
PORTAGE
OUTAGAMIE
KEWAUNEE
BROWN
WAUPACA
WOOD
BUFFALO
JACKSON
TREMP-
EALEAU
WAUSHARA
CALUME1
WINNEBAGt
ADAMS
MONROE
MAR- |
quette'
FOND DU LAC
SHEBOYGAN
GREEN
LAKE
VERNON
COLUMBIA
WASH-
ING-
TON
SAUK
OZAUKEE
CRAWFORI
IVILWAUKEE
WAUKESHA
DANE
GRANT
RACINE
ROCK
KENOSHA
LAFAYETTE
WISCONSIN - EPA Map of Radon Zones
http://www.epa.gov/radon/zonemap.html
The purpose of this map is to assist National, State and local organizations to target their resources and to
implement radon-resistant building codes.
This map is not intended to determine if a home in a given zone should be tested for radon.
Homes with elevated levels of radon have been found in all three zones.
All homes should be tested, regardless of zone designation.

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