36%tests ≥ 4 pCi/L
187tests on record
2.6median pCi/L
Zone 2EPA zone (1993 prediction)

Test results in Harrison County

ResultShareEPA guidance
Below 2 pCi/L36%Below EPA's levels
2 to 4 pCi/L27%Consider fixing
4 pCi/L or more36%EPA recommends fixing

What the data shows

Where Harrison 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 Harrison County compares

Harrison 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
Harrison County36%Wetzel County35%Marion County29%Taylor County28%Barbour County25%Upshur County21%Lewis County13%Doddridge County0%West Virginia 38%
Data table
AreaTests ≥ 4 pCi/LTests
Harrison County36%187
Wetzel County35%54
Marion County29%244
Taylor County28%32
Barbour County25%12
Upshur County21%29
Lewis County13%23
Doddridge County0%1
West Virginia (55 counties)38%10,061

Same source as Harrison County.

What it means for your home

About 1 in 3 results in Harrison 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.

Prefer a digital monitor? See Airthings radon monitors, or enter code radonbycounty-10OFF at their discount store for 10% off.

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: 187. 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