Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Webster County, West Virginia
EPA puts Webster County in Zone 2, its middle radon zone, and only 14 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
52.3%
Greenbrier County
- Greenbrier
- 52.3%
- Randolph
- 36.4%
2 of 7 neighbours have 30+ tests, 2008 to 2017
Nearest county
36.4%
Randolph County, 35 miles
- Randolph
- 36.4%
- WV
- 37.5%
Share at 4+ pCi/L, 33 tests, 2008 to 2017
Ground above low
100.0%
14.0 pts above WV
- Webster
- 100.0%
- WV
- 86.0%
Share of land USGS rates moderate or high potential
Tests reported
15
Too few for a share
- Webster
- 15
- Needed
- 30
2006 to 2015, laboratory
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Webster County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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
Webster County, At a glance
Webster County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Webster 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
Radon tests reported for Webster County, 2008 to 2017, laboratory
CDC holds 14 reported tests for Webster County over the 2008 to 2017 laboratory totals, with a median of 1.3 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Webster County beside the counties around it is how this page reads it.
What these figures count
Only 14 tests were reported to CDC for Webster 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).
Webster County, Compared
Webster County radon figures, compared
Calculated by Radon411CDC's largest figure for Webster County rests on 15 tests over the 2006 to 2015 laboratory totals, 4 of them at or above 4 pCi/L, so each test moves its share by 6.7 points and no rank or comparison is drawn from it. Results reached as high as 11.9 pCi/L, with a middle value of 1.5 pCi/L.
Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Greenbrier County reported the largest share at or above 4 pCi/L, 52.3%, and Randolph County the smallest, 36.4%. Farther out, Harrison County (54 miles away) at 36.4%, Pendleton County (59 miles away) at 30.9% and Kanawha County (61 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 Webster 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.
Webster County, Geology
The ground under Webster County
PredictedUSGS's geologic map puts all of Webster County's mapped land in one class: moderate radon potential. The map puts 79.9% of Webster County in the area it calls Eastern Allegheny Plateau and Mtns and 18.4% in Southern Appalachian Valley and Ridge, with one smaller area beside them. USGS gives the first a radon index of 10 and the second 11, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Eastern Allegheny Plateau and Mtns | Devonian-Pennsylvanian shale, siltstone, sandstone, minor limestone and coal | Moderate | 10 | 79.9% |
| Southern Appalachian Valley and Ridge | Ordovician-Mississippian shale, siltstone, sandstone, limestone. | Moderate | 11 | 18.4% |
| Central Allegheny Plateau | Permian and Pennsylvanian shale, siltstone, sandstone, minor limestone. | Moderate | 10 | 1.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Webster County beside the ground around it
Across West Virginia 18.7% of the land is rated high; none of Webster County's is. Of the 7 counties that border it, 3 have more high-potential ground, Pocahontas County the most at 46.7%.
The map rates the ground, not the air in any home.
Local help
Webster County, Local resources
Radon testing and mitigation in Webster County
- OEHS Radon ProgramOEHS Radon Program, run by WV DHHR OEHS Radiation, Toxics & Indoor Air Division, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in West Virginia.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
West Virginia residents can request a free Radon Test Kit by emailing Radon@wv.gov or calling 304-352-5039
- Compare kits
- Professionals in West Virginia35 professionals are listed in West Virginia.
What West Virginia's program says
- Phone
- 304-352-5039
- 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
Webster County, Questions
Questions about radon in Webster County
Are radon levels high in Webster County?
Over the 2008 to 2017 laboratory totals, 21.4% of the radon tests reported to CDC for Webster County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Greenbrier County reported the largest share at or above 4 pCi/L, 52.3%, and Randolph County the smallest, 36.4%.
Which counties border Webster County?
Webster County borders 7 counties: Braxton County, Nicholas County, Pocahontas County, Upshur County, Lewis County, Greenbrier County and Randolph County.
Products
Webster County, Products
Testing a home in Webster County
No CDC figure names Webster County; the nearest county with one, Randolph County (35 miles away), reported 36.4% 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 Webster County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
EcoBlu plug-in digital radon monitor with a display
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Webster County, Bordering counties
Counties bordering Webster County
Calculated by Radon411- Radon levels in Greenbrier CountyEPA zone 1
52.3%at or above 4 pCi/L
Median 4.5 pCi/L · 176 tests
- Radon levels in Randolph CountyEPA zone 2
36.4%at or above 4 pCi/L
Median 2.5 pCi/L · 33 tests
- Radon levels in Nicholas CountyEPA zone 2
30.8%at or above 4 pCi/L
Median 2.6 pCi/L · 13 tests
- Radon levels in Braxton CountyEPA zone 2
25.0%at or above 4 pCi/L
Median 1.3 pCi/L · 12 tests
- Radon levels in Upshur CountyEPA zone 2
20.7%at or above 4 pCi/L
Median 2.6 pCi/L · 29 tests
- Radon levels in Lewis CountyEPA zone 2
13.0%at or above 4 pCi/L
Median 2.0 pCi/L · 23 tests
- Radon levels in Pocahontas CountyEPA zone 1
12.5%at or above 4 pCi/L
Median 1.0 pCi/L · 16 tests
Webster County, Cities and towns
Cities and towns in Webster County
Webster County has been losing residents: from 8,354 in 2020 to 7,760 on July 1, 2025, a fall of 7.1% by the Census Bureau's estimates. That works out to 14 people per square mile of land. No town dominates: Addison (Webster Springs), the largest, has 663 residents, 8.5% of the total. Together its 3 incorporated places hold 16.0% of those residents; the other 84.0% live outside any of them. Reported testing is thin here: 15 tests over 2006 to 2015, or 1.9 for every 1,000 residents (2025 estimate), where West Virginia as a whole comes to 5.3.
From Addison (Webster Springs) to Camden-on-Gauley, CDC publishes no figure by town: each reads Webster County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Addison (Webster Springs) | 663 | −8.9% | 8.5% |
| Cowen | 465 | −6.8% | 6.0% |
| Camden-on-Gauley | 114 | −8.1% | 1.5% |
3 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).
Webster County, Homes
Homes in Webster County
Of Webster County's 4,408 homes, 74% are detached houses, against 71% across West Virginia; 22% are mobile homes. Half of its homes were built before 1974, close to West Virginia's 1976: 36% date from before 1960 and 14% from 2000 or later. Owners live in 78% of the occupied homes (West Virginia: 74%), so for most households a test and a fix are their own to order.
| Homes | Webster County | West Virginia |
|---|---|---|
| Housing units | 4,408 | 859,653 |
| Detached houses | 74% | 71% |
| In buildings of 5 or more | 3% | 8% |
| Mobile homes | 22% | 14% |
| Built before 1960 | 36% | 33% |
| Built since 2000 | 14% | 18% |
| Middle year built | 1974 | 1976 |
| Owner-occupied | 78% | 74% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.