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Radon Levels in Pleasants County, West Virginia

EPA puts Pleasants County in Zone 2, its middle radon zone, and only 24 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

  • Highest bordering

    38.1%

    Washington County

    Washington
    38.1%
    Wood
    15.9%

    3 of 4 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    22.9%

    Tyler County, 16 miles

    Tyler
    22.9%
    WV
    37.5%

    Share at 4+ pCi/L, 35 tests, 2008 to 2017

  • Ground above low

    100.0%

    14.0 pts above WV

    Pleasants
    100.0%
    WV
    86.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    25

    Too few for a share

    Pleasants
    25
    Needed
    30

    2007 to 2016, 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 Pleasants 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.

The data

Pleasants County, At a glance

Pleasants County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Pleasants 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 Pleasants County, 2008 to 2017, laboratory

CDC holds 24 reported tests for Pleasants County over the 2008 to 2017 laboratory totals, with a median of 4.0 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Pleasants County beside the counties around it is how this page reads it.

What these figures count

Only 24 tests were reported to CDC for Pleasants 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

Pleasants County, Compared

Pleasants County radon figures, compared

Calculated by Radon411

CDC's largest figure for Pleasants County rests on 25 tests over the 2007 to 2016 laboratory totals, 13 of them at or above 4 pCi/L, so each test moves its share by 4.0 points and no rank or comparison is drawn from it. Results reached as high as 43.9 pCi/L, with a middle value of 4.2 pCi/L.

Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Washington County, OH reported the largest share at or above 4 pCi/L, 38.1%, and Wood County the smallest, 15.9%, with Tyler County at 22.9% between. Farther out, Wetzel County (32 miles away) at 35.2%, Harrison County (42 miles away) at 36.4% and Marshall County (43 miles away) at 31.9% 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 Pleasants 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 Pleasants 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
Washington County, OHborders it34938.1%3.1 pCi/L
Tyler County, WVborders it3522.9%1.8 pCi/L
Wood County, WVborders it90515.9%1.8 pCi/L
Ritchie County, WVborders it185.6%1.9 pCi/L
The nearest West Virginia counties to Pleasants County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tyler County16 mi3522.9%1.8 pCi/L
Wood County22 mi90515.9%1.8 pCi/L
Wetzel County32 mi5435.2%2.7 pCi/L
Harrison County42 mi18736.4%2.6 pCi/L
Marshall County43 mi25431.9%2.5 pCi/L
Marion County50 mi24429.1%2.6 pCi/L
Ohio County58 mi85340.3%3.2 pCi/L
Taylor County60 mi3228.1%2.2 pCi/L
Pleasants 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 20172450.0%4.0 pCi/L15.4 pCi/L37.5%−2.0 points
2007 to 20162552.0%4.2 pCi/L43.9 pCi/L37.3%Level
2006 to 20152552.0%4.2 pCi/L43.9 pCi/L37.7%Level
2005 to 20142552.0%4.2 pCi/L43.9 pCi/L37.3%First on file

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

Pleasants County, Geology

The ground under Pleasants County

Predicted

USGS's geologic map puts all of Pleasants County's mapped land in one class: moderate radon potential. 99.1% 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 Pleasants County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central Allegheny PlateauPermian and Pennsylvanian shale, siltstone, sandstone, minor limestone.Moderate1099.1%
Unglaciated PlateauMississippian through Permian limestone, dolomite, and shale.Moderate110.9%

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

Pleasants County beside the ground around it

Across West Virginia 18.7% of the land is rated high; none of Pleasants County's is. Of the 4 counties that border it, none has as large a share of moderate-potential ground; Ritchie County comes nearest at 100%.

Share of land by USGS radon potential: Pleasants County, the 4 counties bordering it and West Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Pleasants CountyZone 2None100%None
Ritchie CountyZone 2None100%None
Tyler CountyZone 2None100%None
Washington County, OHZone 2None100%None
Wood 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.

What it means

Pleasants County, Questions

Questions about radon in Pleasants County

Are radon levels high in Pleasants County?

Over the 2008 to 2017 laboratory totals, 50.0% of the radon tests reported to CDC for Pleasants County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.0 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Washington County, OH reported the largest share at or above 4 pCi/L, 38.1%, and Wood County the smallest, 15.9%, with Tyler County at 22.9% between.

Which counties border Pleasants County?

Pleasants County borders 4 counties: Ritchie County, WV, Tyler County, WV, Washington County, OH and Wood County, WV.

Products

Pleasants County, Products

Testing a home in Pleasants County

No CDC figure names Pleasants County; the nearest county with one, Tyler County (16 miles away), reported 22.9% 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 Pleasants County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Pleasants County homes, compared

Explore

Pleasants County, Bordering counties

Counties bordering Pleasants County

Calculated by Radon411

Pleasants County, Cities and towns

Cities and towns in Pleasants County

About 7,338 people live in Pleasants County by the Census Bureau's estimate for July 1, 2025, 317 fewer than in 2020 (−4.1%). That works out to 56 people per square mile of land. Its largest town, St. Marys, has 1,746 residents, 23.8% of the total. Together its 2 incorporated places hold 35.0% of those residents; the other 65.0% live outside any of them. Reported testing is thin here: 25 tests over 2007 to 2016, or 3.4 for every 1,000 residents (2025 estimate), where West Virginia as a whole comes to 5.5.

From St. Marys to Belmont, CDC publishes no figure by town: each reads Pleasants County's.

The cities and towns in Pleasants County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
St. Marys1,746−4.9%23.8%
Belmont820−5.3%11.2%

2 incorporated places, 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).

Pleasants County, Homes

Homes in Pleasants County

Of Pleasants County's 3,218 homes, 70% are detached houses, against 71% across West Virginia; 21% are mobile homes. Half of its homes were built before 1975, close to West Virginia's 1976: 35% date from before 1960 and 16% from 2000 or later. Owners live in 82% of the occupied homes (West Virginia: 74%), so for most households a test and a fix are their own to order.

Homes in Pleasants County, West Virginia, 2019 to 2023
HomesPleasants CountyWest Virginia
Housing units3,218859,653
Detached houses70%71%
In buildings of 5 or more3%8%
Mobile homes21%14%
Built before 196035%33%
Built since 200016%18%
Middle year built19751976
Owner-occupied82%74%

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