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Radon Levels in Wirt County, West Virginia

EPA puts Wirt County in Zone 2, its middle radon zone, and only 8 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

How to test this homeFind a certified tester

  • Highest bordering

    15.9%

    Wood County

    Wood
    15.9%

    1 of 5 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    15.9%

    Wood County, 15 miles

    Wood
    15.9%
    WV
    37.5%

    Share at 4+ pCi/L, 905 tests, 2008 to 2017

  • Ground above low

    100.0%

    14.0 pts above WV

    Wirt
    100.0%
    WV
    86.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    10

    Too few for a share

    Wirt
    10
    Needed
    30

    2006 to 2015, laboratory

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

Read a result for Wirt County

Starts at EPA's action level

4.0pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 4.0 pCi/L

At or above 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.

Interpret this readingWhat a fix costs

The data

Wirt County, At a glance

Wirt County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Wirt County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Wirt County, 2008 to 2017, laboratory

CDC holds 8 reported tests for Wirt County over the 2008 to 2017 laboratory totals, with a median of 1.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Wirt County beside the counties around it is how this page reads it.

What these figures count

Only 8 tests were reported to CDC for Wirt County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.

Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

How to read these figures

Wirt County, Compared

Wirt County radon figures, compared

Calculated by Radon411

CDC's largest figure for Wirt County rests on 10 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 10.0 points and no rank or comparison is drawn from it. Results reached as high as 2.7 pCi/L, with a middle value of 1.4 pCi/L.

Wood County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 15.9% of its tests at or above 4 pCi/L. Farther out, Tyler County (40 miles away) at 22.9%, Putnam County (46 miles away) at 23.1% and Kanawha County (48 miles away) at 20.6% have figures too. Pooled across 55 West Virginia counties, 37.5% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Morgan County reported the highest share (58.1%) and Grant County the lowest (9.8%). EPA's 1993 map puts Wirt County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

West Virginia, the United States and the counties around Wirt County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
West Virginia, pooled55 counties, pooled10,06137.5%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Morgan Countyhighest in the state24158.1%5.8 pCi/L
Grant Countylowest in the state1649.8%1.1 pCi/L
Roane County, WVborders it2236.4%2.3 pCi/L
Jackson County, WVborders it2425.0%2.5 pCi/L
Wood County, WVborders it90515.9%1.8 pCi/L
Ritchie County, WVborders it185.6%1.9 pCi/L
Calhoun County, WVborders it40.0%2.4 pCi/L
The nearest West Virginia counties to Wirt County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Wood County15 mi90515.9%1.8 pCi/L
Tyler County40 mi3522.9%1.8 pCi/L
Putnam County46 mi5223.1%1.5 pCi/L
Kanawha County48 mi24720.6%2.2 pCi/L
Wetzel County56 mi5435.2%2.7 pCi/L
Harrison County57 mi18736.4%2.6 pCi/L
Cabell County62 mi14516.6%2.0 pCi/L
Marshall County69 mi25431.9%2.5 pCi/L
Wirt County ten-year laboratory totals, against West Virginia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestWest Virginia, pooledChange from the row before
2008 to 201780.0%1.6 pCi/L2.7 pCi/L37.5%Level
2007 to 201680.0%1.6 pCi/L2.7 pCi/L37.3%Level
2006 to 2015100.0%1.4 pCi/L2.7 pCi/L37.7%Level
2005 to 201490.0%1.4 pCi/L2.2 pCi/L37.3%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Wirt County, Geology

The ground under Wirt County

Predicted

USGS's geologic map puts all of Wirt County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Central Allegheny Plateau, to which USGS gives a radon index of 10, in the moderate band (9 to 11).

USGS's geologic areas under Wirt County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central Allegheny PlateauPermian and Pennsylvanian shale, siltstone, sandstone, minor limestone.Moderate10100%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Wirt County beside the ground around it

Across West Virginia 18.7% of the land is rated high; none of Wirt County's is. Of the 5 counties that border it, none has as large a share of moderate-potential ground; Calhoun County comes nearest at 100%.

Share of land by USGS radon potential: Wirt County, the 5 counties bordering it and West Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Wirt CountyZone 2None100%None
Wood CountyZone 2None100%None
Ritchie CountyZone 2None100%None
Jackson CountyZone 2None100%None
Calhoun CountyZone 2None100%None
Roane CountyZone 2None100%None
West Virginia55 counties, pooled by land areaVaries14.0%67.3%18.7%

The map rates the ground, not the air in any home.

Local help

Wirt County, Local resources

Radon testing and mitigation in Wirt County

What West Virginia's program says
Phone
304-352-5039
Email
Radon@wv.gov
Licensing of radon professionals
Complete listings of professionals licensed to perform Asbestos, Lead, Radon and Clandestine Drug Laboratory Remediation activities in West Virginia.

What it means

Wirt County, Questions

Questions about radon in Wirt County

Are radon levels high in Wirt County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Wirt County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.6 pCi/L. Wood County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 15.9% of its tests at or above 4 pCi/L.

Which counties border Wirt County?

Wirt County borders 5 counties: Wood County, Ritchie County, Jackson County, Calhoun County and Roane County.

Products

Wirt County, Products

Testing a home in Wirt County

No CDC figure names Wirt County; the nearest county with one, Wood County (15 miles away), reported 15.9% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Wirt County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Wirt County homes, compared

Explore

Wirt County, Bordering counties

Counties bordering Wirt County

Calculated by Radon411

Wirt County, Cities and towns

Cities and towns in Wirt County

Wirt County has been losing residents: from 5,187 in 2020 to 4,879 on July 1, 2025, a fall of 5.9% by the Census Bureau's estimates. That works out to 21 people per square mile of land. Elizabeth, its one incorporated place, has 676 residents, 13.9% of the total. Reported testing is thin here: 10 tests over 2006 to 2015, or 2.0 for every 1,000 residents (2025 estimate), where West Virginia as a whole comes to 5.3.

Elizabeth is the one incorporated place here; CDC publishes no figure by town, so it reads Wirt County's.

Elizabeth, Wirt County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Elizabeth676−5.8%13.9%

One incorporated place, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).

Wirt County, Homes

Homes in Wirt County

Of Wirt County's 2,723 homes, 72% are detached houses, against 71% across West Virginia; 24% are mobile homes. Much of Wirt County is recent building: 27% of its homes have gone up since 2000 and the middle year built is 1986, against 1976 for West Virginia. Owners live in 86% of the occupied homes (West Virginia: 74%), so for most households a test and a fix are their own to order.

Homes in Wirt County, West Virginia, 2019 to 2023
HomesWirt CountyWest Virginia
Housing units2,723859,653
Detached houses72%71%
In buildings of 5 or moreunder 1%8%
Mobile homes24%14%
Built before 196019%33%
Built since 200027%18%
Middle year built19861976
Owner-occupied86%74%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.