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

Back to Radon Zones in the United States




Radon zones
 Zone 3 (0 counties)
 Zone 2 (18 counties)
 Zone 1 (48 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)
Aurora County
Radon zone : 1

Beadle County
Radon zone : 1

Bennett County
Radon zone : 2

Bon Homme County
Radon zone : 1

Brookings County
Radon zone : 1

Brown County
Radon zone : 1

Brule County
Radon zone : 1

Buffalo County
Radon zone : 1

Butte County
Radon zone : 2

Campbell County
Radon zone : 1

Charles Mix County
Radon zone : 1

Clark County
Radon zone : 1

Clay County
Radon zone : 1

Codington County
Radon zone : 1

Corson County
Radon zone : 1

Custer County
Radon zone : 2

Davison County
Radon zone : 1

Day County
Radon zone : 1

Deuel County
Radon zone : 1

Dewey County
Radon zone : 2

Douglas County
Radon zone : 1

Edmunds County
Radon zone : 1

Fall River County
Radon zone : 2

Faulk County
Radon zone : 1

Grant County
Radon zone : 1

Gregory County
Radon zone : 2

Haakon County
Radon zone : 2

Hamlin County
Radon zone : 1

Hand County
Radon zone : 1

Hanson County
Radon zone : 1

Harding County
Radon zone : 2

Hughes County
Radon zone : 1

Hutchinson County
Radon zone : 1

Hyde County
Radon zone : 1

Jackson County
Radon zone : 2

Jerauld County
Radon zone : 1

Jones County
Radon zone : 2

Kingsbury County
Radon zone : 1

Lake County
Radon zone : 1

Lawrence County
Radon zone : 2

Lincoln County
Radon zone : 1

Lyman County
Radon zone : 1

Marshall County
Radon zone : 1

McCook County
Radon zone : 1

McPherson County
Radon zone : 1

Meade County
Radon zone : 2

Mellette County
Radon zone : 2

Miner County
Radon zone : 1

Minnehaha County
Radon zone : 1

Moody County
Radon zone : 1

Pennington County
Radon zone : 2

Perkins County
Radon zone : 1

Potter County
Radon zone : 1

Roberts County
Radon zone : 1

Sanborn County
Radon zone : 1

Shannon County
Radon zone : 2

Spink County
Radon zone : 1

Stanley County
Radon zone : 1

Sully County
Radon zone : 1

Todd County
Radon zone : 2

Tripp County
Radon zone : 2

Turner County
Radon zone : 1

Union County
Radon zone : 1

Walworth County
Radon zone : 1

Yankton County
Radon zone : 1

Ziebach County
Radon zone : 2


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