Radon by ZIP

Radon zones in Kansas

Last updated

EPA’s Map of Radon Zones places 105 Kansas counties in its three radon potential zones: 65 in Zone 1 (highest), 40 in Zone 2 (moderate), and 0 in Zone 3 (low).

65Zone 1 · Highest potential
40Zone 2 · Moderate potential
0Zone 3 · Low potential

What this means for Kansas homes

Most Kansas counties fall in Zone 1. EPA predicts average indoor screening levels above 4 pCi/L across much of Kansas, so elevated radon is common. Testing is especially worthwhile here, and radon-resistant construction features make sense for new homes.

EPA’s guidance is the same everywhere: test your home, fix it if the level is 4 pCi/L or higher, and consider fixing between 2 and 4 pCi/L. The zone map is from 1993 and should not be used to decide whether a single home needs testing.

Kansas radon program

EPA lists the following state contact for Kansas: Radiation Control Program, KS Department of Health and Environment, phone 785-296-4359. Website: www.kansasradonprogram.org. State programs can tell you about local testing data, free or discounted test kits, disclosure rules for home sales, and credentialed radon professionals.

Kansas counties and their EPA radon zones

CountyEPA radon zone
Allen CountyZone 2
Anderson CountyZone 2
Atchison CountyZone 1
Barber CountyZone 2
Barton CountyZone 1
Bourbon CountyZone 2
Brown CountyZone 1
Butler CountyZone 2
Chase CountyZone 2
Chautauqua CountyZone 2
Cherokee CountyZone 2
Cheyenne CountyZone 1
Clark CountyZone 2
Clay CountyZone 1
Cloud CountyZone 1
Coffey CountyZone 2
Comanche CountyZone 2
Cowley CountyZone 2
Crawford CountyZone 2
Decatur CountyZone 1
Dickinson CountyZone 1
Doniphan CountyZone 2
Douglas CountyZone 1
Edwards CountyZone 2
Elk CountyZone 2
Ellis CountyZone 1
Ellsworth CountyZone 1
Finney CountyZone 1
Ford CountyZone 1
Franklin CountyZone 2
Geary CountyZone 1
Gove CountyZone 1
Graham CountyZone 1
Grant CountyZone 1
Gray CountyZone 1
Greeley CountyZone 1
Greenwood CountyZone 2
Hamilton CountyZone 1
Harper CountyZone 2
Harvey CountyZone 2
Haskell CountyZone 1
Hodgeman CountyZone 1
Jackson CountyZone 1
Jefferson CountyZone 2
Jewell CountyZone 1
Johnson CountyZone 1
Kearny CountyZone 1
Kingman CountyZone 1
Kiowa CountyZone 1
Labette CountyZone 2
Lane CountyZone 1
Leavenworth CountyZone 1
Lincoln CountyZone 1
Linn CountyZone 2
Logan CountyZone 1
Lyon CountyZone 2
Marion CountyZone 1
Marshall CountyZone 1
McPherson CountyZone 1
Meade CountyZone 1
Miami CountyZone 2
Mitchell CountyZone 1
Montgomery CountyZone 2
Morris CountyZone 2
Morton CountyZone 2
Nemaha CountyZone 1
Neosho CountyZone 2
Ness CountyZone 1
Norton CountyZone 1
Osage CountyZone 2
Osborne CountyZone 1
Ottawa CountyZone 1
Pawnee CountyZone 1
Phillips CountyZone 1
Pottawatomie CountyZone 1
Pratt CountyZone 1
Rawlins CountyZone 1
Reno CountyZone 2
Republic CountyZone 1
Rice CountyZone 1
Riley CountyZone 1
Rooks CountyZone 1
Rush CountyZone 1
Russell CountyZone 1
Saline CountyZone 1
Scott CountyZone 1
Sedgwick CountyZone 2
Seward CountyZone 2
Shawnee CountyZone 2
Sheridan CountyZone 1
Sherman CountyZone 1
Smith CountyZone 1
Stafford CountyZone 2
Stanton CountyZone 1
Stevens CountyZone 2
Sumner CountyZone 2
Thomas CountyZone 1
Trego CountyZone 1
Wabaunsee CountyZone 2
Wallace CountyZone 1
Washington CountyZone 1
Wichita CountyZone 1
Wilson CountyZone 2
Woodson CountyZone 2
Wyandotte CountyZone 1

County names follow the 2020 Census. Zones from the EPA Map of Radon Zones (text version). Rows marked “zone of” use the zone EPA gave the predecessor or surrounding county.

Next steps: read how to test your home, check a result with the level calculator, or look up a single address by ZIP code.

Sources

  1. U.S. EPA, EPA Map of Radon Zones (text version)
  2. U.S. EPA, EPA Map of Radon Zones and Supplemental Information (state radon contacts)
  3. U.S. EPA, EPA Maps of Radon Zones and Supporting Documents by State