62%tests ≥ 4 pCi/L
1,624tests on record
6.3median pCi/L
Zone 1EPA zone (1993 prediction)

Test results in Warren County

ResultShareEPA guidance
Below 2 pCi/L22%Below EPA's levels
2 to 4 pCi/L17%Consider fixing
4 pCi/L or more62%EPA recommends fixing

What the data shows

Where Warren County sits among Kentucky's 120 counties with dataEach dot is a county's share of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017
0%20%40%60%

How Warren County compares

Warren County has the highest share of high results among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Warren County62%Barren County52%Simpson County33%Logan County32%Allen County29%Edmonson County21%Butler County4%Kentucky 44%
Data table
AreaTests ≥ 4 pCi/LTests
Warren County62%1,624
Barren County52%186
Simpson County33%126
Logan County32%79
Allen County29%58
Edmonson County21%62
Butler County4%26
Kentucky (120 counties)44%28,793

Same source as Warren County.

What it means for your home

More than half of all results in Warren County were at or above 4 pCi/L, where the EPA recommends a fix. Only a test shows your own home's level.

Levels in pCi/L from the EPA. The WHO reference level is 100 Bq/m³, about 2.7 pCi/L.

Test your home

Start with a short-term test (2–90 days) and confirm a result of 4 pCi/L or more with a second test. EPA guide

Sponsored: we earn a commission on purchases through these links. We haven't tested Airthings monitors yet.

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Fixing high radon

No local job records yet. National range: $800–$2,500, average $1,200 (EPA, 2003). Cost guide →

About this data

Source: Radon test results from laboratories (CDC Environmental Public Health Tracking Network). Period: 2008–2017. Tests: 1,624. Read the methodology →

These are voluntary and real-estate tests, not a random sample of homes, so they describe tested homes rather than every home.

About this page

Published by Ray Roman, editor of Radon by County. Figures are loaded from the cited source and spot-checked against it. Editorial policy · About us