32%tests ≥ 4 pCi/L
41tests on record
2.2median pCi/L
Zone 2EPA zone (1993 prediction)

Test results in Carter County

ResultShareEPA guidance
Below 2 pCi/L49%Below EPA's levels
2 to 4 pCi/L20%Consider fixing
4 pCi/L or more32%EPA recommends fixing

What the data shows

Where Carter 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 Carter County compares

Carter County ranks 3 of 7 among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Elliott County40%Lewis County33%Carter County32%Rowan County19%Boyd County18%Greenup County13%Lawrence County0%Kentucky 44%
Data table
AreaTests ≥ 4 pCi/LTests
Elliott County40%5
Lewis County33%12
Carter County32%41
Rowan County19%74
Boyd County18%168
Greenup County13%104
Lawrence County0%9
Kentucky (120 counties)44%28,793

Same source as Carter County.

What it means for your home

About 1 in 3 results in Carter 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: 41. 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