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Kansas Radon Map and Levels by County

Kansas's counties span EPA Zones 1 and 2. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

Predicted
65 of 105counties in Zone 1, EPA's highest radon zone
Measured
By countyCDC publishes Kansas's test figures by county: 104 of 105 counties have one.
Your home
Test to knowNo area figure here is a reading of your home.
How to test this homeFind a certified tester

The data

Kansas, At a glance

Kansas at a glance

Predicted: EPA radon zone

105 of 105 counties classified

EPA classifies counties, not states. Of the 105 counties in Kansas with a zone, 65 are in Zone 1 and 40 in Zone 2.

  • Zone 1: Highest predicted potentialgreater than 4 pCi/L65 of 105 counties · 61.9%
  • Zone 2: Moderate predicted potential2 to 4 pCi/L40 of 105 counties · 38.1%

An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

CDC test figures, county by county

CDC publishes Kansas's radon test figures by county: 104 of its 105 counties have one. Each one's share is in the county list.

Kansas, Counties

Kansas counties by EPA zone

Predicted

Kansas's radon map, then all 105 counties by the zone EPA predicts for each, highest reported share of tests at or above 4 pCi/L first. Each has its own report.

Kansas radon map by county: EPA radon zones. Map of Kansas's 105 counties shaded by EPA radon zone: Zone 1 in red-orange, Zone 2 in amber. 65 in Zone 1, 40 in Zone 2, 0 in Zone 3.
Kansas radon map by countyEPA radon zones for Kansas's counties: 65 counties in Zone 1, 40 counties in Zone 2, 0 counties in Zone 3.Predicted potential for each county, not a reading of any home. Homes with elevated levels of radon have been found in all three zones.

Zone 1: highest predicted potential65

Local help

Kansas, Local resources

Local resources in Kansas

Who to ask in Kansas: its radon program, test kits and professionals.

What Kansas's program says
Phone
(800) 693-5343

Radon Action Brief

National Radon Action MonthPre-sale

The radon brief for your Kansas county, in one dated file.

  • Your area's radon record, explained.
  • Your plan to test this week.
  • Fix costs and pros near you.

Save 64%Sale price: $8.99Price after the sale: $25Ends Jan 31Then $25

Get your Kansas county's BriefSee a free sample

Area data, not a test of the building.

What it means

Kansas, Questions

Questions about radon in Kansas

Common questions

9 questions, answered from the figures above

Is radon a problem in Kansas?

EPA's Map of Radon Zones places 65 of the 105 Kansas counties it classifies in Zone 1, the highest predicted potential, 40 in Zone 2 and 0 in Zone 3. An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.

Kansas on the radon mapRadon levels by state

How do I get a radon test in Kansas?

EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. The Kansas radon program is the place to ask about certified testers and any test kit offer it runs.

How to test a homeFree and low-cost kits by stateKansas radon program

Which Kansas counties are in EPA radon Zone 1?

65 counties are in Zone 1: Atchison County, Barton County, Brown County, Cheyenne County, Clay County, Cloud County, Decatur County, Dickinson County, and 57 more in the county table on this page. Zone 1 is EPA's class for highest predicted potential, a predicted average indoor screening level greater than 4 pCi/L. A zone is a prediction for a county, not a measurement of any home.

Radon in Atchison CountyRadon in Barton CountyRadon in Brown County

Who does radon mitigation in Kansas?

Radon411's Kansas directory lists 177 radon businesses for testing, mitigation or both, each with the licensing list it was read from. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional.

How radon mitigation worksWhat mitigation costsRadon professionals in Kansas

Which Kansas counties have the highest radon?

105 of Kansas's 105 counties have an EPA radon zone published here. Radon411 will not rank counties on data it does not hold, and a zone is a prediction for an area rather than a measurement of any building.

What share of radon tests in Kansas are high?

CDC has published no statewide radon testing statistics for Kansas, so we cannot give a figure. Where CDC does publish one, the percentage describes radon tests reported to CDC, not homes.

Which EPA region is Kansas in?

Kansas is in EPA Region 7: Midwest.

Do I need to test my home in Kansas?

Yes, wherever you live in the state. 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.

Why does this page show coverage rather than one radon level for Kansas?

A statewide figure averages counties with very different geology and very different numbers of reported tests, so it hides more than it shows. The county report is the level at which the EPA zone, the geologic potential and the reported testing statistics are actually published, which is why the county table above links to every one of them.

If you own, buy, sell or rent

What these figures mean for each reader, with the guide that covers it

The zone counts on this page describe counties across Kansas. They are predictions for areas, and none of them measures your building.

Kansas in figures

The figures above, said in words

What the published data says about Kansas, in words. A zone and a share of tests describe an area, never the level in any one home.

    • Predicted

      Predicted

      EPA places 65 of Kansas's 105 counties in Zone 1 and 40 in Zone 2.

      Zone 1 counties, A to Z, begin with Atchison County, Barton County and Brown County; the county section below lists all 65.

    • Compared

      Calculated by Radon411

      62% of Kansas's counties with a zone on file are in Zone 1, a larger share than across all U.S. counties (34%). It is a share of counties, not of land, people or homes.

  • Reported tests

    Measured

    CDC has no statewide testing figure for Kansas on file here.

    104 of the 105 counties have a published county figure; the most tests in each one's latest year were reported for Johnson County (5,240 tests in 2022), Sedgwick County (4,911 tests in 2022) and Douglas County (868 tests in 2022).

  • Local record

    Kansas's radon program is the Kansas Radon Program; its contacts are under Local resources.

    3 cities have a page setting the figures of the counties it lies in side by side: Lawrence, Manhattan and Topeka.

Products

Kansas, Products

Testing and mitigation products

Whatever the figures for Kansas show, only a test tells you about one home.

Test kits and monitors42

See all products

As an Amazon Associate, Radon411 earns from qualifying purchases.

Best radon monitors for Kansas homes, compared

Testing

5

Mitigation

3

Explore

Cities in Kansas with their own page

Radon data is published by county, not by city. Each city page sets the figures of the counties the city lies in side by side.

Kansas, Next steps

What to do next

  1. LearnKnow what radon isWhat radon is, how it gets indoors, and why a county zone is not a reading for your home.Learn about radon
  2. TestTest the building you live inShort-term or long-term, where the device goes, and closed-house conditions.How to test
  3. FixBring a high level downHow a mitigation system works, and the retest that confirms it.How mitigation works
  4. Find a proHire a certified professionalMeasurement and mitigation professionals by state, with their certifications.Find a professional

Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.