
Short-term kit![]()
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
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
3 of 4 neighbours have 30+ tests, 2008 to 2017
Nearest county
22.9%
Tyler County, 16 miles
Share at 4+ pCi/L, 35 tests, 2008 to 2017
Ground above low
100.0%
14.0 pts above WV
Share of land USGS rates moderate or high potential
Tests reported
25
Too few for a share
2007 to 2016, laboratory
EPA radon zone
Zone 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Pleasants County
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
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
Predicted: EPA radon zone
Pleasants County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
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.
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).
Pleasants County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Pleasants County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Allegheny Plateau | Permian and Pennsylvanian shale, siltstone, sandstone, minor limestone. | Moderate | 10 | 99.1% |
| Unglaciated Plateau | Mississippian through Permian limestone, dolomite, and shale. | Moderate | 11 | 0.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Pleasants County, Local resources
West Virginia residents can request a free Radon Test Kit by emailing Radon@wv.gov or calling 304-352-5039
Complete listings of professionals licensed to perform Asbestos, Lead, Radon and Clandestine Drug Laboratory Remediation activities in West Virginia.
What it means
Pleasants County, Questions
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.
Pleasants County borders 4 counties: Ritchie County, WV, Tyler County, WV, Washington County, OH and Wood County, WV.
Products
Pleasants County, Products
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 monitors: 1 of 3
Explore
Pleasants County, Bordering counties
38.1%at or above 4 pCi/L
Median 3.1 pCi/L · 349 tests
22.9%at or above 4 pCi/L
Median 1.8 pCi/L · 35 tests
15.9%at or above 4 pCi/L
Median 1.8 pCi/L · 905 tests
5.6%at or above 4 pCi/L
Median 1.9 pCi/L · 18 tests
Pleasants County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| St. Marys | 1,746 | −4.9% | 23.8% |
| Belmont | 820 | −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
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 | Pleasants County | West Virginia |
|---|---|---|
| Housing units | 3,218 | 859,653 |
| Detached houses | 70% | 71% |
| In buildings of 5 or more | 3% | 8% |
| Mobile homes | 21% | 14% |
| Built before 1960 | 35% | 33% |
| Built since 2000 | 16% | 18% |
| Middle year built | 1975 | 1976 |
| Owner-occupied | 82% | 74% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.