EPA radon zones
North Carolina radon map: every county's zone
8 of North Carolina's 100 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 31 are zone 2 and 61 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
Alamance CountyZone 3
Alexander CountyZone 2
Alleghany CountyZone 1
Anson CountyZone 3
Ashe CountyZone 2
Avery CountyZone 2
Beaufort CountyZone 3
Bertie CountyZone 3
Bladen CountyZone 3
Brunswick CountyZone 3
Buncombe CountyZone 1
Burke CountyZone 2
Cabarrus CountyZone 3
Caldwell CountyZone 2
Camden CountyZone 3
Carteret CountyZone 3
Caswell CountyZone 2
Catawba CountyZone 2
Chatham CountyZone 3
Cherokee CountyZone 1
Chowan CountyZone 3
Clay CountyZone 2
Cleveland CountyZone 2
Columbus CountyZone 3
Craven CountyZone 3
Cumberland CountyZone 3
Currituck CountyZone 3
Dare CountyZone 3
Davidson CountyZone 3
Davie CountyZone 3
Duplin CountyZone 3
Durham CountyZone 3
Edgecombe CountyZone 3
Forsyth CountyZone 2
Franklin CountyZone 2
Gaston CountyZone 2
Gates CountyZone 3
Graham CountyZone 2
Granville CountyZone 3
Greene CountyZone 3
Guilford CountyZone 3
Halifax CountyZone 3
Harnett CountyZone 3
Haywood CountyZone 2
Henderson CountyZone 1
Hertford CountyZone 3
Hoke CountyZone 3
Hyde CountyZone 3
Iredell CountyZone 2
Jackson CountyZone 2
Johnston CountyZone 3
Jones CountyZone 3
Lee CountyZone 3
Lenoir CountyZone 3
Lincoln CountyZone 2
Macon CountyZone 2
Madison CountyZone 2
Martin CountyZone 3
McDowell CountyZone 2
Mecklenburg CountyZone 3
Mitchell CountyZone 1
Montgomery CountyZone 3
Moore CountyZone 3
Nash CountyZone 3
New Hanover CountyZone 3
Northampton CountyZone 3
Onslow CountyZone 3
Orange CountyZone 3
Pamlico CountyZone 3
Pasquotank CountyZone 3
Pender CountyZone 3
Perquimans CountyZone 3
Person CountyZone 3
Pitt CountyZone 3
Polk CountyZone 2
Randolph CountyZone 3
Richmond CountyZone 3
Robeson CountyZone 3
Rockingham CountyZone 1
Rowan CountyZone 3
Rutherford CountyZone 2
Sampson CountyZone 3
Scotland CountyZone 3
Stanly CountyZone 3
Stokes CountyZone 2
Surry CountyZone 2
Swain CountyZone 2
Transylvania CountyZone 1
Tyrrell CountyZone 3
Union CountyZone 3
Vance CountyZone 2
Wake CountyZone 2
Warren CountyZone 2
Washington CountyZone 3
Watauga CountyZone 1
Wayne CountyZone 3
Wilkes CountyZone 2
Wilson CountyZone 3
Yadkin CountyZone 2
Yancey CountyZone 2
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.
North Carolina cities: water and radon
Source: EPA Map of Radon Zones.