Radon levels in West Virginia

Verified county-level radon indicators are available for 55 West Virginia counties. Select a county for its source period and sample details.

High results are most common in Morgan County (58%) and least common in Grant County (10%)Share of tests at or above 4 pCi/L by county · Radon test results from laboratories, 2008–2017 · 55 of 55 counties have data
Barbour County: 25% of tests at or above 4 pCi/L · 12 testsBerkeley County: 51% of tests at or above 4 pCi/L · 2,888 testsBoone County: 14% of tests at or above 4 pCi/L · 7 testsBraxton County: 25% of tests at or above 4 pCi/L · 12 testsBrooke County: 44% of tests at or above 4 pCi/L · 157 testsCabell County: 17% of tests at or above 4 pCi/L · 145 testsCalhoun County: 0% of tests at or above 4 pCi/L · 4 testsClay County: 0% of tests at or above 4 pCi/L · 1 testsDoddridge County: 0% of tests at or above 4 pCi/L · 1 testsFayette County: 0% of tests at or above 4 pCi/L · 20 testsGilmer County: 13% of tests at or above 4 pCi/L · 8 testsGrant County: 10% of tests at or above 4 pCi/L · 164 testsGreenbrier County: 52% of tests at or above 4 pCi/L · 176 testsHampshire County: 39% of tests at or above 4 pCi/L · 90 testsHancock County: 49% of tests at or above 4 pCi/L · 326 testsHardy County: 23% of tests at or above 4 pCi/L · 53 testsHarrison County: 36% of tests at or above 4 pCi/L · 187 testsJackson County: 25% of tests at or above 4 pCi/L · 24 testsJefferson County: 53% of tests at or above 4 pCi/L · 898 testsKanawha County: 21% of tests at or above 4 pCi/L · 247 testsLewis County: 13% of tests at or above 4 pCi/L · 23 testsLincoln County: 18% of tests at or above 4 pCi/L · 11 testsLogan County: 0% of tests at or above 4 pCi/L · 9 testsMcDowell County: 0% of tests at or above 4 pCi/L · 3 testsMarion County: 29% of tests at or above 4 pCi/L · 244 testsMarshall County: 32% of tests at or above 4 pCi/L · 254 testsMason County: 23% of tests at or above 4 pCi/L · 13 testsMercer County: 34% of tests at or above 4 pCi/L · 101 testsMineral County: 42% of tests at or above 4 pCi/L · 107 testsMingo County: 0% of tests at or above 4 pCi/L · 5 testsMonongalia County: 19% of tests at or above 4 pCi/L · 1,176 testsMonroe County: 33% of tests at or above 4 pCi/L · 18 testsMorgan County: 58% of tests at or above 4 pCi/L · 241 testsNicholas County: 31% of tests at or above 4 pCi/L · 13 testsOhio County: 40% of tests at or above 4 pCi/L · 853 testsPendleton County: 31% of tests at or above 4 pCi/L · 55 testsPleasants County: 50% of tests at or above 4 pCi/L · 24 testsPocahontas County: 13% of tests at or above 4 pCi/L · 16 testsPreston County: 37% of tests at or above 4 pCi/L · 176 testsPutnam County: 23% of tests at or above 4 pCi/L · 52 testsRaleigh County: 17% of tests at or above 4 pCi/L · 42 testsRandolph County: 36% of tests at or above 4 pCi/L · 33 testsRitchie County: 6% of tests at or above 4 pCi/L · 18 testsRoane County: 36% of tests at or above 4 pCi/L · 22 testsSummers County: 13% of tests at or above 4 pCi/L · 15 testsTaylor County: 28% of tests at or above 4 pCi/L · 32 testsTucker County: 28% of tests at or above 4 pCi/L · 18 testsTyler County: 23% of tests at or above 4 pCi/L · 35 testsUpshur County: 21% of tests at or above 4 pCi/L · 29 testsWayne County: 16% of tests at or above 4 pCi/L · 19 testsWebster County: 21% of tests at or above 4 pCi/L · 14 testsWetzel County: 35% of tests at or above 4 pCi/L · 54 testsWirt County: 0% of tests at or above 4 pCi/L · 8 testsWood County: 16% of tests at or above 4 pCi/L · 905 testsWyoming County: 33% of tests at or above 4 pCi/L · 3 tests
  • Under 10%
  • 10–20%
  • 20–30%
  • 30–40%
  • 40% or more
  • No data

Counties

CountyTests% ≥ 4 pCi/LMedian (pCi/L)EPA zone (1993)Source
Barbour County1225%2.0Zone 2Radon test results from laboratories through 2017
Berkeley County2,88851%4.0Zone 1Radon test results from laboratories through 2017
Boone County714%0.1Zone 3Radon test results from laboratories through 2017
Braxton County1225%1.3Zone 2Radon test results from laboratories through 2017
Brooke County15744%3.4Zone 1Radon test results from laboratories through 2017
Cabell County14517%2.0Zone 2Radon test results from laboratories through 2017
Calhoun County40%2.4Zone 2Radon test results from laboratories through 2017
Clay County10%0.1Zone 2Radon test results from laboratories through 2017
Doddridge County10%0.5Zone 2Radon test results from laboratories through 2017
Fayette County200%0.8Zone 2Radon test results from laboratories through 2017
Gilmer County813%2.1Zone 2Radon test results from laboratories through 2017
Grant County16410%1.1Zone 1Radon test results from laboratories through 2017
Greenbrier County17652%4.5Zone 1Radon test results from laboratories through 2017
Hampshire County9039%2.8Zone 1Radon test results from laboratories through 2017
Hancock County32649%3.9Zone 1Radon test results from laboratories through 2017
Hardy County5323%1.6Zone 1Radon test results from laboratories through 2017
Harrison County18736%2.6Zone 2Radon test results from laboratories through 2017
Jackson County2425%2.5Zone 2Radon test results from laboratories through 2017
Jefferson County89853%4.4Zone 1Radon test results from laboratories through 2017
Kanawha County24721%2.2Zone 3Radon test results from laboratories through 2017
Lewis County2313%2.0Zone 2Radon test results from laboratories through 2017
Lincoln County1118%1.9Zone 2Radon test results from laboratories through 2017
Logan County90%1.4Zone 3Radon test results from laboratories through 2017
Marion County24429%2.6Zone 2Radon test results from laboratories through 2017
Marshall County25432%2.5Zone 1Radon test results from laboratories through 2017
Mason County1323%2.4Zone 2Radon test results from laboratories through 2017
McDowell County30%2.5Zone 3Radon test results from laboratories through 2017
Mercer County10134%2.1Zone 1Radon test results from laboratories through 2017
Mineral County10742%2.8Zone 1Radon test results from laboratories through 2017
Mingo County50%1.0Zone 3Radon test results from laboratories through 2017
Monongalia County1,17619%1.9Zone 1Radon test results from laboratories through 2017
Monroe County1833%3.6Zone 1Radon test results from laboratories through 2017
Morgan County24158%5.8Zone 1Radon test results from laboratories through 2017
Nicholas County1331%2.6Zone 2Radon test results from laboratories through 2017
Ohio County85340%3.2Zone 1Radon test results from laboratories through 2017
Pendleton County5531%2.5Zone 1Radon test results from laboratories through 2017
Pleasants County2450%4.0Zone 2Radon test results from laboratories through 2017
Pocahontas County1613%1.0Zone 1Radon test results from laboratories through 2017
Preston County17637%2.5Zone 1Radon test results from laboratories through 2017
Putnam County5223%1.5Zone 2Radon test results from laboratories through 2017
Raleigh County4217%1.4Zone 2Radon test results from laboratories through 2017
Randolph County3336%2.5Zone 2Radon test results from laboratories through 2017
Ritchie County186%1.9Zone 2Radon test results from laboratories through 2017
Roane County2236%2.3Zone 2Radon test results from laboratories through 2017
Summers County1513%1.5Zone 1Radon test results from laboratories through 2017
Taylor County3228%2.2Zone 2Radon test results from laboratories through 2017
Tucker County1828%1.8Zone 2Radon test results from laboratories through 2017
Tyler County3523%1.8Zone 2Radon test results from laboratories through 2017
Upshur County2921%2.6Zone 2Radon test results from laboratories through 2017
Wayne County1916%1.7Zone 2Radon test results from laboratories through 2017
Webster County1421%1.3Zone 2Radon test results from laboratories through 2017
Wetzel County5435%2.7Zone 1Radon test results from laboratories through 2017
Wirt County80%1.6Zone 2Radon test results from laboratories through 2017
Wood County90516%1.8Zone 2Radon test results from laboratories through 2017
Wyoming County333%0.8Zone 3Radon test results from laboratories through 2017

Test your home

County figures show how often tests come back high, not the level in your home. Only a test tells you that: see how to test for radon.

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