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

Back to Radon Zones in the United States




Radon zones
 Zone 3 (37 counties)
 Zone 2 (9 counties)
 Zone 1 (1 county)
  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)
Abbeville County
Radon zone : 2

Aiken County
Radon zone : 3

Allendale County
Radon zone : 3

Anderson County
Radon zone : 2

Bamberg County
Radon zone : 3

Barnwell County
Radon zone : 3

Beaufort County
Radon zone : 3

Berkeley County
Radon zone : 3

Calhoun County
Radon zone : 3

Charleston County
Radon zone : 3

Cherokee County
Radon zone : 2

Chester County
Radon zone : 3

Chesterfield County
Radon zone : 3

Clarendon County
Radon zone : 3

Colleton County
Radon zone : 3

Darlington County
Radon zone : 3

Dillon County
Radon zone : 3

Dorchester County
Radon zone : 3

Edgefield County
Radon zone : 3

Fairfield County
Radon zone : 3

Florence County
Radon zone : 3

Georgetown County
Radon zone : 3

Greenville County
Radon zone : 1

Greenwood County
Radon zone : 3

Hampton County
Radon zone : 3

Horry County
Radon zone : 3

Jasper County
Radon zone : 3

Kershaw County
Radon zone : 3

Lancaster County
Radon zone : 3

Laurens County
Radon zone : 2

Lee County
Radon zone : 3

Lexington County
Radon zone : 3

Marion County
Radon zone : 3

Marlboro County
Radon zone : 3

McCormick County
Radon zone : 3

Newberry County
Radon zone : 3

Oconee County
Radon zone : 2

Orangeburg County
Radon zone : 3

Pickens County
Radon zone : 2

Richland County
Radon zone : 3

Saluda County
Radon zone : 3

Spartanburg County
Radon zone : 2

Sumter County
Radon zone : 3

Union County
Radon zone : 3

Williamsburg County
Radon zone : 3

York County
Radon zone : 2


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