EPA radon zones
Minnesota radon map: every county's zone
68 of Minnesota's 87 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 19 are zone 2 and 0 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
Aitkin CountyZone 2
Anoka CountyZone 2
Becker CountyZone 1
Beltrami CountyZone 2
Benton CountyZone 2
Big Stone CountyZone 1
Blue Earth CountyZone 1
Brown CountyZone 1
Carlton CountyZone 2
Carver CountyZone 1
Cass CountyZone 2
Chippewa CountyZone 1
Chisago CountyZone 2
Clay CountyZone 1
Clearwater CountyZone 2
Cook CountyZone 2
Cottonwood CountyZone 1
Crow Wing CountyZone 2
Dakota CountyZone 1
Dodge CountyZone 1
Douglas CountyZone 1
Faribault CountyZone 1
Fillmore CountyZone 1
Freeborn CountyZone 1
Goodhue CountyZone 1
Grant CountyZone 1
Hennepin CountyZone 1
Houston CountyZone 1
Hubbard CountyZone 1
Isanti CountyZone 2
Itasca CountyZone 2
Jackson CountyZone 1
Kanabec CountyZone 1
Kandiyohi CountyZone 1
Kittson CountyZone 1
Koochiching CountyZone 2
Lac qui Parle CountyZone 1
Lake CountyZone 2
Lake of the Woods CountyZone 2
Le Sueur CountyZone 1
Lincoln CountyZone 1
Lyon CountyZone 1
Mahnomen CountyZone 1
Marshall CountyZone 1
Martin CountyZone 1
McLeod CountyZone 1
Meeker CountyZone 1
Mille Lacs CountyZone 2
Morrison CountyZone 2
Mower CountyZone 1
Murray CountyZone 1
Nicollet CountyZone 1
Nobles CountyZone 1
Norman CountyZone 1
Olmsted CountyZone 1
Otter Tail CountyZone 1
Pennington CountyZone 1
Pine CountyZone 2
Pipestone CountyZone 1
Polk CountyZone 1
Pope CountyZone 1
Ramsey CountyZone 1
Red Lake CountyZone 1
Redwood CountyZone 1
Renville CountyZone 1
Rice CountyZone 1
Rock CountyZone 1
Roseau CountyZone 1
Scott CountyZone 1
Sherburne CountyZone 1
Sibley CountyZone 1
St. Louis CountyZone 2
Stearns CountyZone 1
Steele CountyZone 1
Stevens CountyZone 1
Swift CountyZone 1
Todd CountyZone 1
Traverse CountyZone 1
Wabasha CountyZone 1
Wadena CountyZone 1
Waseca CountyZone 1
Washington CountyZone 1
Watonwan CountyZone 1
Wilkin CountyZone 1
Winona CountyZone 1
Wright CountyZone 1
Yellow Medicine CountyZone 1
How much does radon mitigation cost?
Most single-family systems cost $800 to $2,500 installed, depending on foundation type and how many suction points are needed. A follow-up test confirms the system works.
What do the zones mean?
EPA radon zones describe counties, not houses. Zone 1 counties have a predicted average indoor level above 4 picocuries per liter (pCi/L), Zone 2 between 2 and 4, Zone 3 below 2. Homes with high levels are found in every zone, which is why EPA recommends that every home be tested, and fixed at 4 pCi/L or above.
Minnesota cities: water and radon
Source: EPA Map of Radon Zones.