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Verified:Kansas state license
Locations and reports
Manhattan lies in 2 counties, in EPA Zone 1. Homes with elevated levels occur in all three zones, so the only way to know your home's level is to test it.
Data checked By Radon411Methodology
The data
Manhattan, 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 Manhattan, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.
Each county has its own CDC test figures, shown below side by side. About 54,673 people live in Manhattan.
Manhattan, 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.
| County | EPA zone | Reported tests at or above 4 pCi/L | Median reported result | Tests reported | Annual years on file |
|---|---|---|---|---|---|
| Pottawatomie County | Zone 1: Highest predicted potential | 25.2% | 1.7 pCi/L | 206 tests | 7 |
| Riley County | Zone 1: Highest predicted potential | 31.3% | 1.9 pCi/L | 800 tests | 7 |
The median reported pre-mitigation result for 2022 was 1.7 pCi/L in Pottawatomie County and 1.9 pCi/L in Riley 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
Manhattan, Professionals
Businesses whose listed city is Manhattan, from the state registries and listings in the Radon411 directory, with the same business and certification status the directory shows.
Radon professionals listed in Manhattan: 1 of 6
7 listings with Manhattan as the city. See radon mitigation and testing in Manhattan, or all radon professionals in Kansas.
Manhattan, Local resources
Who to ask in Kansas: its radon program, test kits and professionals.
What it means
Manhattan, Questions
EPA's Map of Radon Zones classifies counties, not cities. Pottawatomie County and Riley County are in Zone 1 (highest 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 25.2% in Pottawatomie County (206 tests) and 31.3% in Riley County (800 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 Pottawatomie County and Riley County, the counties Manhattan lies in.
Explore
Manhattan, Next steps
What to do next: 1 of 4