EPA radon zones
Kentucky radon map: every county's zone
30 of Kentucky's 120 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 82 are zone 2 and 8 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
Adair CountyZone 1
Allen CountyZone 1
Anderson CountyZone 2
Ballard CountyZone 3
Barren CountyZone 1
Bath CountyZone 2
Bell CountyZone 2
Boone CountyZone 2
Bourbon CountyZone 1
Boyd CountyZone 2
Boyle CountyZone 1
Bracken CountyZone 2
Breathitt CountyZone 2
Breckinridge CountyZone 2
Bullitt CountyZone 1
Butler CountyZone 2
Caldwell CountyZone 2
Calloway CountyZone 3
Campbell CountyZone 2
Carlisle CountyZone 3
Carroll CountyZone 2
Carter CountyZone 2
Casey CountyZone 1
Christian CountyZone 2
Clark CountyZone 1
Clay CountyZone 2
Clinton CountyZone 2
Crittenden CountyZone 2
Cumberland CountyZone 1
Daviess CountyZone 2
Edmonson CountyZone 2
Elliott CountyZone 2
Estill CountyZone 2
Fayette CountyZone 1
Fleming CountyZone 2
Floyd CountyZone 2
Franklin CountyZone 1
Fulton CountyZone 3
Gallatin CountyZone 2
Garrard CountyZone 2
Grant CountyZone 2
Graves CountyZone 3
Grayson CountyZone 2
Green CountyZone 1
Greenup CountyZone 2
Hancock CountyZone 2
Hardin CountyZone 2
Harlan CountyZone 2
Harrison CountyZone 1
Hart CountyZone 1
Henderson CountyZone 2
Henry CountyZone 2
Hickman CountyZone 3
Hopkins CountyZone 2
Jackson CountyZone 2
Jefferson CountyZone 1
Jessamine CountyZone 1
Johnson CountyZone 2
Kenton CountyZone 2
Knott CountyZone 2
Knox CountyZone 2
Larue CountyZone 2
Laurel CountyZone 2
Lawrence CountyZone 2
Lee CountyZone 2
Leslie CountyZone 2
Letcher CountyZone 2
Lewis CountyZone 2
Lincoln CountyZone 1
Livingston CountyZone 2
Logan CountyZone 2
Lyon CountyZone 2
Madison CountyZone 2
Magoffin CountyZone 2
Marion CountyZone 1
Marshall CountyZone 3
Martin CountyZone 2
Mason CountyZone 2
McCracken CountyZone 3
McCreary CountyZone 2
McLean CountyZone 2
Meade CountyZone 2
Menifee CountyZone 2
Mercer CountyZone 1
Metcalfe CountyZone 1
Monroe CountyZone 1
Montgomery CountyZone 2
Morgan CountyZone 2
Muhlenberg CountyZone 2
Nelson CountyZone 1
Nicholas CountyZone 2
Ohio CountyZone 2
Oldham CountyZone 2
Owen CountyZone 2
Owsley CountyZone 2
Pendleton CountyZone 1
Perry CountyZone 2
Pike CountyZone 2
Powell CountyZone 2
Pulaski CountyZone 1
Robertson CountyZone 1
Rockcastle CountyZone 2
Rowan CountyZone 2
Russell CountyZone 1
Scott CountyZone 1
Shelby CountyZone 2
Simpson CountyZone 2
Spencer CountyZone 2
Taylor CountyZone 1
Todd CountyZone 2
Trigg CountyZone 2
Trimble CountyZone 2
Union CountyZone 2
Warren CountyZone 1
Washington CountyZone 2
Wayne CountyZone 2
Webster CountyZone 2
Whitley CountyZone 2
Wolfe CountyZone 2
Woodford 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.
Kentucky cities: water and radon
Source: EPA Map of Radon Zones.