Radon levels in West Virginia: Moderate

The model predicts a population-weighted basement average of 2.4 pCi/L across West Virginia's 55 counties - about 1.3× the US average of 1.8 pCi/L. Above-ground floors average 1.4 pCi/L.

Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.

20 / 55

EPA Zone 1 counties (36%)

29 / 6

Zone 2 / Zone 3 counties

0

counties predicted ≥ 4 pCi/L

0.2%

of ZIP codes predicted ≥ 4 pCi/L

West Virginia counties by predicted radon

Sorted highest to lowest predicted basement average. 55 counties.

CountyPredicted basementUpstairsGradeEPA zoneZIPs
Morgan County3.7 pCi/L2.2ModerateEPA Zone 12
Berkeley County3.5 pCi/L2.1ModerateEPA Zone 19
Brooke County3.2 pCi/L1.9ModerateEPA Zone 15
Jefferson County3.1 pCi/L2.0ModerateEPA Zone 17
Greenbrier County2.9 pCi/L1.6ModerateEPA Zone 116
Hampshire County2.9 pCi/L1.4ModerateEPA Zone 116
Hancock County2.9 pCi/L1.8ModerateEPA Zone 14
Mineral County2.8 pCi/L1.4ModerateEPA Zone 18
Hardy County2.8 pCi/L1.3ModerateEPA Zone 17
Monroe County2.8 pCi/L1.4ModerateEPA Zone 19
Pendleton County2.7 pCi/L1.1ModerateEPA Zone 17
Pocahontas County2.6 pCi/L1.2ModerateEPA Zone 19
Ohio County2.6 pCi/L1.8ModerateEPA Zone 13
Mercer County2.5 pCi/L1.3ModerateEPA Zone 112
Summers County2.4 pCi/L1.3ModerateEPA Zone 19
Marshall County2.4 pCi/L1.4ModerateEPA Zone 18
Nicholas County2.4 pCi/L1.3ModerateEPA Zone 214
Raleigh County2.4 pCi/L1.3ModerateEPA Zone 230
Upshur County2.4 pCi/L1.4ModerateEPA Zone 25
Preston County2.3 pCi/L1.3ModerateEPA Zone 112
Randolph County2.3 pCi/L1.3ModerateEPA Zone 220
Tucker County2.3 pCi/L1.2ModerateEPA Zone 25
Barbour County2.3 pCi/L1.3ModerateEPA Zone 24
Taylor County2.3 pCi/L1.3ModerateEPA Zone 23
Webster County2.3 pCi/L1.2ModerateEPA Zone 28
Doddridge County2.3 pCi/L1.4ModerateEPA Zone 24
Lewis County2.3 pCi/L1.3ModerateEPA Zone 28
Roane County2.3 pCi/L1.4ModerateEPA Zone 28
Tyler County2.3 pCi/L1.4ModerateEPA Zone 24
Wetzel County2.3 pCi/L1.3ModerateEPA Zone 110
Marion County2.2 pCi/L1.4ModerateEPA Zone 28
Fayette County2.2 pCi/L1.2ModerateEPA Zone 224
Pleasants County2.2 pCi/L1.4ModerateEPA Zone 22
Braxton County2.2 pCi/L1.2ModerateEPA Zone 213
Jackson County2.2 pCi/L1.3ModerateEPA Zone 210
Gilmer County2.2 pCi/L1.3ModerateEPA Zone 29
Ritchie County2.2 pCi/L1.3ModerateEPA Zone 210
Lincoln County2.2 pCi/L1.2ModerateEPA Zone 213
Wirt County2.2 pCi/L1.4ModerateEPA Zone 22
Wayne County2.1 pCi/L1.2ModerateEPA Zone 212
Clay County2.1 pCi/L1.2ModerateEPA Zone 211
Harrison County2.1 pCi/L1.4ModerateEPA Zone 210
Putnam County2.1 pCi/L1.4ModerateEPA Zone 28
Mason County2.1 pCi/L1.3ModerateEPA Zone 211
Calhoun County2.1 pCi/L1.2ModerateEPA Zone 210
Kanawha County2.1 pCi/L1.3ModerateEPA Zone 330
Grant County2.1 pCi/L1.0ModerateEPA Zone 16
Wyoming County2.0 pCi/L1.0ModerateEPA Zone 322
Cabell County2.0 pCi/L1.3ModerateEPA Zone 211
Mingo County2.0 pCi/L1.0LowEPA Zone 310
McDowell County2.0 pCi/L1.0LowEPA Zone 39
Boone County1.9 pCi/L1.0LowEPA Zone 324
Wood County1.9 pCi/L1.3LowEPA Zone 211
Logan County1.9 pCi/L1.0LowEPA Zone 311
Monongalia County1.9 pCi/L1.3LowEPA Zone 18

West Virginia radon questions

Is radon high in West Virginia?
West Virginia's population-weighted predicted basement average is 2.4 pCi/L, about 1.3× the US average of 1.8. 0 of its 55 modeled counties are predicted at or above the EPA action level of 4 pCi/L, 49 are in the 2-4 "consider fixing" range and 6 are below 2. 0.2% of West Virginia ZIP codes are predicted at 4 or higher.
Which West Virginia county has the highest radon?
Morgan County has the highest predicted basement average in West Virginia at 3.7 pCi/L (EPA Zone 1). The lowest is Logan County at 1.9 pCi/L. These are modeled area averages; individual homes in any county can test far higher.
How many EPA Zone 1 counties are in West Virginia?
20 of West Virginia's 55 counties (36%) are EPA Zone 1 (highest potential), 29 are Zone 2 and 6 are Zone 3. The EPA zone map dates from 1993; the predicted values on this page come from a 2001-2021 model built on millions of actual tests, so the two can disagree for a given county.
Should I test for radon in West Virginia?
Yes - with some urgency. West Virginia's predicted average is in the moderate range, and 69.9% of its ZIP codes are predicted at 2 pCi/L or higher. A short-term charcoal kit or a continuous digital monitor will tell you your actual level within days.

West Virginia radon program

Many states offer free or discounted test kits and keep lists of certified mitigators. Find the West Virginia radon office through the EPA state radon contacts page. Then read how to test and what mitigation costs.