Listed for: TestingMitigation
Verified:Kansas state license
Locations and reports
EPA puts Shawnee County, where Topeka is, in Zone 2, its middle radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
The data
Topeka, What is published
Radon data is published by county, not by city
Radon data is published by county, not by city. EPA assigns radon zones to counties, and CDC publishes radon test figures by county. Neither publishes a figure for Topeka, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.
Shawnee County has an EPA zone and its own CDC test figures, shown below. About 125,795 people live in Topeka.
Topeka, Counties
Each county's own EPA zone and its own published CDC figures for 2022, the newest period any of them has. A county without a figure for that period is shown without one, never with a figure from another year.
Shawnee CountyZone 2Moderate predicted potential
The median reported pre-mitigation result for 2022 was 2.6 pCi/L in Shawnee County.
CDC counts radon tests that were reported to it, not homes, and figures from few tests can swing widely from year to year. Each county’s report has its full history.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2022.
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Local help
Topeka, Professionals
Businesses whose listed city is Topeka, from the state registries and listings in the Radon411 directory, with the same business and certification status the directory shows.
Radon professionals listed in Topeka: 1 of 6
6 listings with Topeka as the city. See radon mitigation and testing in Topeka, or all radon professionals in Kansas.
Topeka, Local resources
Who to ask in Kansas: its radon program, test kits and professionals.
What it means
Topeka, Questions
EPA's Map of Radon Zones classifies counties, not cities. Shawnee County is in Zone 2 (moderate predicted potential). A zone is a prediction for a whole county and never tells you the level in one home.
For 2022, the share of radon tests reported to CDC that were at or above 4 pCi/L was 34.5% in Shawnee County (388 tests). Each is that county's own figure, counting tests reported to CDC, not homes. Radon411 does not average or combine them into a figure for the city.
Yes. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. How to test a home.
The answers use the published figures of Shawnee County, the county Topeka lies in.
Explore
Topeka, Next steps
What to do next: 1 of 4