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Radon Levels in Mecklenburg County, Virginia

EPA puts Mecklenburg County in Zone 2, its middle radon zone, and 37.9% of its 66 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

    37.9%

    7.5 pts above VA

    Mecklenburg
    37.9%
    Virginia
    30.4%

    66 tests, 2008 to 2017

  • Median result

    3.0pCi/L

    Below action level

    Mecklenburg
    3.0 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    66

    67th of 84 by tests

    Mecklenburg
    66
    Fairfax
    8,657

    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 Virginia

    35 of 84

    Middle half

    Mecklenburg
    37.9%
    Russell
    67.3%

    By share, of 84 with 30+ tests

Read a result for Mecklenburg County

Starts at Mecklenburg County's median, 3.0 pCi/L

3.0pCi/L

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

EPA’s reading of 3.0 pCi/L

Between 2 and 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 between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Mecklenburg County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Mecklenburg County, At a glance

Mecklenburg County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Mecklenburg 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 61% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Mecklenburg County, 2008 to 2017, laboratory

Reported results by concentration band, Mecklenburg County, 2008 to 2017, laboratory
Under 2 pCi/L: 38%2 to 4 pCi/L: 24%4 pCi/L and above: 38%

Of 66 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Mecklenburg County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L2537.9%
2 to 4 pCi/L1624.2%
4 pCi/L and above2537.9%
What these figures count

These are the 66 tests reported to CDC for Mecklenburg 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

Mecklenburg County, Compared

Mecklenburg County radon figures, compared

Calculated by Radon411

In Mecklenburg County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (25 of 66) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 2.2 points higher. Across 131 Virginia counties pooled together, 30.4% of tests reached that level, so Mecklenburg County runs 7.5 points above its state.

Of 5 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 3 a smaller one; the spread is 10.5% (Granville County, NC) to 42.7% (Warren County, NC). By share, Mecklenburg County is 35th of 84 Virginia counties with 30 or more tests for the same period.

Half the tests came in under 3.0 pCi/L and half over it; the single highest reached 34.1 pCi/L. Below the action level, 25 tests (37.9%) came in under 2 pCi/L, against 44.7% statewide, and 16 tests (24.2%) fell between 2 and 4, against 24.9% statewide.

Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 37.9% share point the same way here. USGS geology rates 61% of the county's land moderate radon potential.

CDC's ten-year totals for Mecklenburg County went from 24 tests (2005 to 2014) to 66 (2008 to 2017), the share going from 29.2% to 37.9%.

Mecklenburg County against Virginia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Mecklenburg County
Mecklenburg County6637.9%3.0 pCi/LThis county
Virginia, pooled131 counties, pooled53,19930.4%Not pooled−7.5 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−2.2 points
Russell Countyhighest in the state4967.3%6.7 pCi/L+29.4 points
Norfolk citylowest in the state732.7%0.5 pCi/L−35.2 points
Warren County, NCborders it8242.7%3.0 pCi/L+4.8 points
Charlotte County, VAborders it2040.0%3.7 pCi/L+2.1 points
Brunswick County, VAborders it3839.5%2.8 pCi/L+1.6 points
Lunenburg County, VAborders it425.0%0.5 pCi/L−12.9 points
Halifax County, VAborders it3718.9%2.2 pCi/L−19.0 points
Vance County, NCborders it10914.7%1.5 pCi/L−23.2 points
Granville County, NCborders it15310.5%0.8 pCi/L−27.4 points
Where Mecklenburg County's reported results fell, 2008 to 2017, laboratory, beside Virginia and the United States
ResultMecklenburg County testsMecklenburg County shareVirginia shareU.S. shareAgainst Virginia
Under 2 pCi/L2537.9%44.7%39.6%−6.8 points
2 to 4 pCi/L1624.2%24.9%24.7%−0.7 points
4 pCi/L and above2537.9%30.4%35.7%+7.5 points
Mecklenburg County ranked among the 84 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
Campbell County30 of 8436539.7%3.2 pCi/L
Brunswick County31 of 843839.5%2.8 pCi/L
Pittsylvania County32 of 8424238.4%3.0 pCi/L
Page County33 of 8414138.3%3.3 pCi/L
Louisa County34 of 8428938.1%2.8 pCi/L
Mecklenburg County35 of 846637.9%3.0 pCi/L
James City County36 of 848337.3%2.6 pCi/L
Warren County37 of 8453636.9%2.7 pCi/L
Amherst County38 of 8424736.8%2.9 pCi/L
Shenandoah County39 of 8439036.4%2.7 pCi/L
Orange County40 of 8446236.1%2.8 pCi/L
Mecklenburg County ten-year laboratory totals, against Virginia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestVirginia, pooledChange from the row before
2008 to 20176637.9%3.0 pCi/L34.1 pCi/L30.4%−1.8 points
2007 to 20165839.7%3.2 pCi/L34.1 pCi/L30.6%+5.5 points
2006 to 20153834.2%3.0 pCi/L34.1 pCi/L30.7%+5.0 points
2005 to 20142429.2%3.0 pCi/L34.1 pCi/L30.3%First on file

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

Mecklenburg County, Geology

The ground under Mecklenburg County

Predicted

USGS's geologic map splits Mecklenburg County: 61.4% of its land is moderate radon potential and 38.4% high and 0.2% low. The map puts 61.1% of Mecklenburg County in the area it calls Carolina Terrane and 38.4% in Goochland Terrane. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 13, in the high band (12 to 17).

USGS's geologic areas under Mecklenburg County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Carolina TerraneMetavolcanic rocks, granite and granitic gneiss.Moderate1061.1%
Goochland TerraneGranite, pegmatites, granitic gneiss, schist and gneiss, slate, and phyllite.High1338.4%

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

Mecklenburg County beside the ground around it

On high-potential ground Mecklenburg County is close to Virginia as a whole: 38.4% of its land against 47.9%. Of the 7 counties that border it, 2 have more high-potential ground, Brunswick County the most at 86.9%.

Share of land by USGS radon potential: Mecklenburg County, the 7 counties bordering it and Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Mecklenburg CountyZone 20.2%61.4%38.4%
Lunenburg CountyZone 2None40.5%59.5%
Charlotte CountyZone 2None100%None
Vance County, NCZone 236.7%63.3%None
Brunswick CountyZone 112.9%0.2%86.9%
Warren County, NCZone 2None100%None
Granville County, NCZone 387.8%12.2%None
Halifax CountyZone 20.2%99.8%None
Virginia133 counties, pooled by land areaVaries20.6%30.0%47.9%

The map rates the ground, not the air in any home.

Local help

Mecklenburg County, Local resources

Radon testing and mitigation in Mecklenburg County

What Virginia's program says
Phone
(804) 864-8161
Email
Radon@vdh.virginia.gov
Licensing of radon professionals
The Code of Virginia requires that Radon testers and mitigators be currently certified by either the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB).

What it means

Mecklenburg County, Questions

Questions about radon in Mecklenburg County

Are radon levels high in Mecklenburg County?

Over the 2008 to 2017 laboratory totals, 37.9% of the radon tests reported to CDC for Mecklenburg County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.0 pCi/L. Of 84 Virginia counties with 30 or more tests for the same period, 34 reported a higher share; pooled, the state comes to 30.4%.

Which counties border Mecklenburg County?

Mecklenburg County borders 7 counties: Lunenburg County, VA, Charlotte County, VA, Vance County, NC, Brunswick County, VA, Warren County, NC, Granville County, NC and Halifax County, VA.

Products

Mecklenburg County, Products

Testing a home in Mecklenburg County

In Mecklenburg County, 37.9% of 66 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 30.4% pooled across Virginia. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Mecklenburg County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Mecklenburg County homes, compared

Explore

Mecklenburg County, Bordering counties

Counties bordering Mecklenburg County

Calculated by Radon411

Mecklenburg County, Cities and towns

Cities and towns in Mecklenburg County

The Census Bureau estimates 30,747 residents in Mecklenburg County for July 1, 2025, 462 more than in 2020 (+1.5%). That works out to 49 people per square mile of land. No town dominates: South Hill, the largest, has 4,889 residents, 15.9% of the total. Reported testing is thin here: 66 tests over 2008 to 2017, or 2.1 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 6.0.

From South Hill to Brodnax, CDC publishes no figure by town: each reads Mecklenburg County's.

The cities and towns in Mecklenburg County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
South Hill4,889+4.2%15.9%
Chase City2,054+0.3%6.7%
Clarksvilleextends beyond Mecklenburg County1,303+0.2%Counted whole
La Crosse605+0.3%2.0%
Boydton301+0.7%1.0%
Brodnaxextends beyond Mecklenburg County285−0.3%Counted whole

6 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 Mecklenburg County is counted whole, so it has no share.

Mecklenburg County, Homes

Homes in Mecklenburg County

Of Mecklenburg County's 19,184 homes, 73% are detached houses, against 61% across Virginia; 20% are mobile homes. Half of its homes were built before 1982, close to Virginia's 1984: 22% date from before 1960 and 23% from 2000 or later. 72% of occupied homes are lived in by their owner (Virginia: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Mecklenburg County, Virginia, 2019 to 2023
HomesMecklenburg CountyVirginia
Housing units19,1843,654,784
Detached houses73%61%
In buildings of 5 or more4%19%
Mobile homes20%4%
Built before 196022%19%
Built since 200023%25%
Middle year built19821984
Owner-occupied72%67%

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