40%tests ≥ 4 pCi/L
853tests on record
3.2median pCi/L
Zone 1EPA zone (1993 prediction)

Test results in Ohio County

ResultShareEPA guidance
Below 2 pCi/L27%Below EPA's levels
2 to 4 pCi/L33%Consider fixing
4 pCi/L or more40%EPA recommends fixing

What the data shows

Where Ohio County sits among West Virginia's 55 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 Ohio County compares

Ohio County ranks 4 of 5 among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Jefferson County, Ohio50%Belmont County, Ohio45%Brooke County44%Ohio County40%Marshall County32%West Virginia 38%
Data table
AreaTests ≥ 4 pCi/LTests
Jefferson County, Ohio50%271
Belmont County, Ohio45%697
Brooke County44%157
Ohio County40%853
Marshall County32%254
West Virginia (55 counties)38%10,061

Same source as Ohio County. Other bordering counties: Washington County, Pennsylvania.

What it means for your home

About 1 in 2 results in Ohio 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: 853. 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