Kansas Radon Map, Levels & Testing Guide
Browse the 105 listed county pages surfaced for Kansas. Open a listed county to compare its EPA zone, source caveats, testing meaning, and when mitigation pricing becomes worth checking.
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Official Evidence in Kansas
105 of 105 listed counties have official evidence
Open a county page to see the official source context: measurement fields, local burden, state percentile, and the next step for no reading, 2.0-3.9, or 4.0+ pCi/L.
100%
covered
Measured
105
State source
105
CDC source
0
Needs source detail
0
Measured Risk Leaders in Kansas
County rankings from actual reported radon tests
These lists rank the visible Kansas county pages by measured radon signals, not by the EPA zone label alone. Use them to spot where the state hub has a real data story before opening individual county pages.
105
measured counties
State-level evidence read
This hub has measured high-burden counties, so the first click should be evidence-led.
The state hub is now doing a decision job: it separates first-click counties, retest counties, and lower-signal counties from 105 visible county measurement rows. 58 counties cross the high measured-burden band, so those pages should answer testing and 4.0+ action questions most directly.
First-click counties
Open Greeley County first when you need the strongest local answer. It is tagged Test-now from 100.0% 4.0+ - 15.3 pCi/L primary - 1 tests. 83 visible measured counties are elevated or high enough to review before lower-signal counties.
Buyer/seller lane
Buyer/seller lane: start with the elevated or high counties, require a fresh lowest-level test, and turn any 4.0+ property result into quote or credit math. The hub has 105 state-source county rows to support that routing.
Retest lane
Retest lane: 2.0-3.9 pCi/L deserves more caution in the elevated/high county set than in lower-signal counties. The hub should send those users to county pages before product or cost paths.
Best county pages to open first
Start with these local evidence pages
Ranked by measured burden, 4.0+ share, test volume, and whether the EPA zone understates the measurement signal.
Greeley County
KDHE
100.0% 4.0+ - 15.3 pCi/L primary - 1 tests
Greeley County is a first-click page: 100.0% of reported tests at or above 4.0 and 15.3 pCi/L primary result. Route no-reading users to a test now and 4.0+ users to quote or credit planning.
Wallace County
KDHE
100.0% 4.0+ - 11.4 pCi/L primary - 2 tests
Wallace County is a first-click page: 100.0% of reported tests at or above 4.0 and 11.4 pCi/L primary result. Route no-reading users to a test now and 4.0+ users to quote or credit planning.
Sheridan County
KDHE
100.0% 4.0+ - 10.9 pCi/L primary - 5 tests
Sheridan County is a first-click page: 100.0% of reported tests at or above 4.0 and 10.9 pCi/L primary result. Route no-reading users to a test now and 4.0+ users to quote or credit planning.
Lane County
KDHE
100.0% 4.0+ - 9.0 pCi/L primary - 5 tests
Lane County is a first-click page: 100.0% of reported tests at or above 4.0 and 9.0 pCi/L primary result. Route no-reading users to a test now and 4.0+ users to quote or credit planning.
Highest 4.0+ share
Primary result 6.1 pCi/L - high-end 7.7 pCi/L
KDHE
Primary result 15.3 pCi/L - high-end 15.3 pCi/L
KDHE
Primary result 4.5 pCi/L - high-end 4.5 pCi/L
KDHE
Primary result 4.4 pCi/L - high-end 4.4 pCi/L
KDHE
Primary result 9.0 pCi/L - high-end 13.5 pCi/L
KDHE
Highest high-end reading
4.0+ share 39.7% - primary result 4.6 pCi/L
KDHE
4.0+ share 23.7% - primary result 5.1 pCi/L
KDHE
4.0+ share 28.5% - primary result 3.5 pCi/L
KDHE
4.0+ share 65.5% - primary result 6.9 pCi/L
KDHE
4.0+ share 31.1% - primary result 3.6 pCi/L
KDHE
Most reported tests
4.0+ share 39.7% - primary result 4.6 pCi/L
KDHE
4.0+ share 18.1% - primary result 2.3 pCi/L
KDHE
4.0+ share 28.5% - primary result 3.5 pCi/L
KDHE
4.0+ share 27.8% - primary result 3.6 pCi/L
KDHE
4.0+ share 34.5% - primary result 3.8 pCi/L
KDHE
Measured pattern
Among 105 visible counties with measurement tables, 58 land in the high measured-burden band and 83 land in high or elevated measured-burden bands. That lets this hub rank counties by observed test distribution instead of repeating the EPA map.
Map vs measurements
24 elevated measured counties are not EPA Zone 1. Those are the pages where the actual test distribution matters more than a map-only answer.
Source strategy
All measured rows shown here use state-specific official sources, so this hub can make source-backed county comparisons without leaning on a national fallback.
Already Tested
View Kansas Cost Estimates
If you already have a radon result, skip the directory and move straight to local price guidance.
Understand the Number
2.0 vs 4.0 vs 8.0 pCi/L
Use the parent levels guide if you need the plain-English meaning of a radon result before browsing counties.
Need a Number First
Read the Testing Guide
Use the fastest valid radon test setup before you compare quotes or ask whether mitigation is worth it.
Browse Counties
Jump to the Directory
Open your county to see its EPA zone, testing meaning, and the point where mitigation becomes worth pricing.
Official State Resource
Kansas radon program and rules
Use the state program link to verify local radon guidance, disclosure language, and contractor credential expectations before you act on an estimate.
Disclosure rule tracked
Kansas requires sellers to disclose known material defects through the Seller's Disclosure Statement.
State licensing required
Kansas requires radon professionals to be certified by the KDHE.
Already tested? Get your itemized mitigation cost estimate.
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