Radon Risk in Kansas
EPA zone data and CDC radon averages for all 105 counties in Kansas.
Tipper on radon in Kansas
The CDC doesn't have enough statewide testing data to calculate a reliable average for Kansas. That doesn't mean radon isn't a concern here. It means individual county data, where available, is your best guide. Use the county list below to find the most specific data for where you live.
Looking at the zone breakdown: 65 of Kansas's 105 counties are EPA Zone 1 (high risk), 40 are Zone 2 (moderate). That means 62% of the state falls into the highest risk category, counties where the EPA predicts average indoor levels above 4 pCi/L. Use the county list below to find your area and see the most specific data available.
Tipper's recommendation for Kansas residents: if you haven't tested your home, start there. A short-term test kit costs around $15 and gives you a result in 48 hours. If your home tests at or above 4 pCi/L, a professional mitigation system (typically $800–$2,000 depending on your foundation and home size) will reliably bring levels down.
Sources: EPA Radon Zone Map
Why Kansas's Geology Matters
Kansas has elevated radon in its eastern half, where limestone, shale, and glacial deposits produce uranium-bearing soils. The Flint Hills region and northeastern Kansas are particularly high. Western Kansas, with its younger sedimentary deposits and sandy soils, tends to have lower radon potential.
Radon Disclosure Laws
Kansas does not have a mandatory radon disclosure law, but the state's standard disclosure form includes a question about known radon conditions.
State Radon Program
Kansas Department of Health and Environment — Radon Program
All Counties in Kansas
Click any county to see its full radon data and local contractors.
Showing 105 of 105 counties in Kansas. Zone classifications from the EPA. Average pCi/L from CDC tracking data.
Not sure where to start?
A short-term test kit tells you your home's actual radon level in 48 hours. Tipper has picked the best options at every price point. All EPA-approved, all lab-fee included.
Contractors
Find certified radon pros in Kansas →