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Radon Levels in Tyler County, West Virginia

EPA puts Tyler County in Zone 2, its middle radon zone, and 22.9% of its 35 reported radon tests (2008 to 2017, laboratory totals) were at or above 4 pCi/L. 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

  • Share at 4+ pCi/L

    22.9%

    14.6 pts below WV

    Tyler
    22.9%
    WV
    37.5%

    35 tests, 2008 to 2017

  • Median result

    1.8pCi/L

    Below action level

    Tyler
    1.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    35

    25th of 27 by tests

    Tyler
    35
    Berkeley
    2,888

    Reported to CDC before any fix, 2008 to 2017

  • 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

  • Rank in WV

    20 of 27

    Middle half

    Tyler
    22.9%
    Morgan
    58.1%

    By share, of 27 with 30+ tests

Read a result for Tyler County

Starts at Tyler County's median, 1.8 pCi/L

1.8pCi/L

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

EPA’s reading of 1.8 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Tyler County's median reported result, 2008 to 2017.

Interpret this reading

The data

Tyler County, At a glance

Tyler County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Tyler 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 Tyler County, 2008 to 2017, laboratory

Reported results by concentration band, Tyler County, 2008 to 2017, laboratory
Under 2 pCi/L: 57%2 to 4 pCi/L: 20%4 pCi/L and above: 23%

Of 35 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Tyler County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L2057.1%
2 to 4 pCi/L720.0%
4 pCi/L and above822.9%
What these figures count

These are the 35 tests reported to CDC for Tyler County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not 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

Tyler County, Compared

Tyler County radon figures, compared

Calculated by Radon411

Tyler County's 35 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.8 pCi/L and a maximum of 8.8 pCi/L, and 22.9% reached 4 pCi/L. West Virginia as a whole (55 West Virginia counties, pooled) comes to 37.5%: 14.6 points higher than here.

Among its state's counties it ranks 20th of 27 West Virginia counties with 30 or more tests for the same period. Statewide for the same period, Morgan County reported the highest share (58.1%) and Grant County the lowest (9.8%).

Below the action level, 20 tests (57.1%) came in under 2 pCi/L, against 37.7% statewide, and 7 tests (20.0%) fell between 2 and 4, against 24.7% statewide. CDC's ten-year totals for Tyler County went from 33 tests (2005 to 2014) to 35 (2008 to 2017), the share going from 12.1% to 22.9%.

EPA's 1993 zone map puts Tyler County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

Next door, the shares run from 35.2% in Wetzel County to 58.3% in Monroe County, OH.

Tyler County against West Virginia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Tyler County
Tyler County3522.9%1.8 pCi/LThis county
West Virginia, pooled55 counties, pooled10,06137.5%Not pooled+14.6 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+12.8 points
Morgan Countyhighest in the state24158.1%5.8 pCi/L+35.2 points
Grant Countylowest in the state1649.8%1.1 pCi/L−13.1 points
Monroe County, OHborders it4858.3%5.0 pCi/L+35.4 points
Pleasants County, WVborders it2450.0%4.0 pCi/L+27.1 points
Washington County, OHborders it34938.1%3.1 pCi/L+15.2 points
Wetzel County, WVborders it5435.2%2.7 pCi/L+12.3 points
Ritchie County, WVborders it185.6%1.9 pCi/L−17.3 points
Doddridge County, WVborders it10.0%0.5 pCi/L−22.9 points
Where Tyler County's reported results fell, 2008 to 2017, laboratory, beside West Virginia and the United States
ResultTyler County testsTyler County shareWest Virginia shareU.S. shareAgainst West Virginia
Under 2 pCi/L2057.1%37.7%39.6%+19.4 points
2 to 4 pCi/L720.0%24.7%24.7%−4.7 points
4 pCi/L and above822.9%37.5%35.7%−14.6 points
Tyler County ranked among the 27 West Virginia counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Marshall County15 of 2725431.9%2.5 pCi/L
Pendleton County16 of 275530.9%2.5 pCi/L
Marion County17 of 2724429.1%2.6 pCi/L
Taylor County18 of 273228.1%2.2 pCi/L
Putnam County19 of 275223.1%1.5 pCi/L
Tyler County20 of 273522.9%1.8 pCi/L
Hardy County21 of 275322.6%1.6 pCi/L
Kanawha County22 of 2724720.6%2.2 pCi/L
Monongalia County23 of 271,17619.0%1.9 pCi/L
Raleigh County24 of 274216.7%1.4 pCi/L
Cabell County25 of 2714516.6%2.0 pCi/L
Tyler 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 20173522.9%1.8 pCi/L8.8 pCi/L37.5%+2.9 points
2007 to 20163520.0%1.8 pCi/L8.8 pCi/L37.3%+7.5 points
2006 to 20153212.5%1.5 pCi/L8.8 pCi/L37.7%+0.4 points
2005 to 20143312.1%1.6 pCi/L8.8 pCi/L37.3%First on file

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

Tyler County, Geology

The ground under Tyler County

Predicted

USGS's geologic map puts all of Tyler County's mapped land in one class: moderate radon potential. 99.5% 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 Tyler County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central Allegheny PlateauPermian and Pennsylvanian shale, siltstone, sandstone, minor limestone.Moderate1099.5%
Unglaciated PlateauMississippian through Permian limestone, dolomite, and shale.Moderate110.5%

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

Tyler County beside the ground around it

Across West Virginia 18.7% of the land is rated high; none of Tyler County's is. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Doddridge County comes nearest at 100%.

Share of land by USGS radon potential: Tyler County, the 6 counties bordering it and West Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Tyler CountyZone 2None100%None
Wetzel CountyZone 1None100%None
Doddridge CountyZone 2None100%None
Pleasants CountyZone 2None100%None
Monroe County, OHZone 2None100%None
Ritchie CountyZone 2None100%None
Washington County, OHZone 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

Tyler County, Local resources

Radon testing and mitigation in Tyler 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

Tyler County, Questions

Questions about radon in Tyler County

Are radon levels high in Tyler County?

Over the 2008 to 2017 laboratory totals, 22.9% of the radon tests reported to CDC for Tyler County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of 27 West Virginia counties with 30 or more tests for the same period, 19 reported a higher share; pooled, the state comes to 37.5%.

Which counties border Tyler County?

Tyler County borders 6 counties: Wetzel County, WV, Doddridge County, WV, Pleasants County, WV, Monroe County, OH, Ritchie County, WV and Washington County, OH.

Products

Tyler County, Products

Testing a home in Tyler County

In Tyler County, 22.9% of 35 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 37.5% pooled across West Virginia. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Tyler County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Tyler County homes, compared

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Tyler County, Bordering counties

Counties bordering Tyler County

Calculated by Radon411

Tyler County, Cities and towns

Cities and towns in Tyler County

About 7,881 people live in Tyler County by the Census Bureau's estimate for July 1, 2025, 413 fewer than in 2020 (−5.0%). That works out to 31 people per square mile of land. Paden City, the largest place on its list (2,381 residents in all), extends beyond Tyler County, so no share of the total is worked out for it. CDC's 35 reported tests for 2008 to 2017 work out to 4.4 per 1,000 residents (2025 estimate), close to West Virginia's 5.7.

From Paden City to Friendly, CDC publishes no figure by town: each reads Tyler County's.

The cities and towns in Tyler County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Paden Cityextends beyond Tyler County2,381−5.9%Counted whole
Sistersville1,319−6.0%16.7%
Middlebourne676−5.5%8.6%
Friendly94−5.1%1.2%

4 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). A place that extends beyond Tyler County is counted whole, so it has no share.

Tyler County, Homes

Homes in Tyler County

Tyler County is a place of houses on their own lots: 79% of its 4,144 homes are detached single-family houses, against 71% across West Virginia. The homes are older than West Virginia's as a whole: half were built before 1968 (1976 for West Virginia), and 40% date from before 1960. Owners live in 87% of the occupied homes (West Virginia: 74%), so for most households a test and a fix are their own to order.

Homes in Tyler County, West Virginia, 2019 to 2023
HomesTyler CountyWest Virginia
Housing units4,144859,653
Detached houses79%71%
In buildings of 5 or more3%8%
Mobile homes15%14%
Built before 196040%33%
Built since 200012%18%
Middle year built19681976
Owner-occupied87%74%

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