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Radon Levels in Brunswick County, Virginia

EPA puts Brunswick County in Zone 1, its highest radon zone, and 39.5% of its 38 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

    39.5%

    9.1 pts above VA

    Brunswick
    39.5%
    Virginia
    30.4%

    38 tests, 2008 to 2017

  • Median result

    2.8pCi/L

    Below action level

    Brunswick
    2.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    38

    80th of 84 by tests

    Brunswick
    38
    Fairfax
    8,657

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

  • Rank in Virginia

    31 of 84

    Middle half

    Brunswick
    39.5%
    Russell
    67.3%

    By share, of 84 with 30+ tests

Read a result for Brunswick County

Starts at Brunswick County's median, 2.8 pCi/L

2.8pCi/L

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

EPA’s reading of 2.8 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. Brunswick County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Brunswick County, At a glance

Brunswick County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Brunswick County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

USGS geologic potential: High across 87% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Brunswick County, 2008 to 2017, laboratory
Under 2 pCi/L: 18%2 to 4 pCi/L: 42%4 pCi/L and above: 40%

Of 38 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Brunswick County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L718.4%
2 to 4 pCi/L1642.1%
4 pCi/L and above1539.5%
What these figures count

These are the 38 tests reported to CDC for Brunswick 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

Brunswick County, Compared

Brunswick County radon figures, compared

Calculated by Radon411

In Brunswick County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (15 of 38) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 3.8 points higher. Across 131 Virginia counties pooled together, 30.4% of tests reached that level, so Brunswick County runs 9.1 points above its state.

Of 3 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 1 a smaller one; the spread is 37.9% (Mecklenburg County) to 42.7% (Warren County, NC). By share, Brunswick County is 31st of 84 Virginia counties with 30 or more tests for the same period.

Half the tests came in under 2.8 pCi/L and half over it; the single highest reached 40.9 pCi/L. Below the action level, 7 tests (18.4%) came in under 2 pCi/L, against 44.7% statewide, and 16 tests (42.1%) fell between 2 and 4, against 24.9% statewide.

Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 39.5% share point the same way here. USGS geology rates 87% of the county's land high radon potential.

CDC's ten-year totals for Brunswick County went from 32 tests (2005 to 2014) to 38 (2008 to 2017), the share going from 34.4% to 39.5%.

Brunswick County against Virginia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Brunswick County
Brunswick County3839.5%2.8 pCi/LThis county
Virginia, pooled131 counties, pooled53,19930.4%Not pooled−9.1 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−3.8 points
Russell Countyhighest in the state4967.3%6.7 pCi/L+27.8 points
Norfolk citylowest in the state732.7%0.5 pCi/L−36.8 points
Warren County, NCborders it8242.7%3.0 pCi/L+3.2 points
Northampton County, NCborders it6240.3%3.4 pCi/L+0.8 points
Mecklenburg County, VAborders it6637.9%3.0 pCi/L−1.6 points
Dinwiddie County, VAborders it2035.0%1.9 pCi/L−4.5 points
Lunenburg County, VAborders it425.0%0.5 pCi/L−14.5 points
Nottoway County, VAborders it825.0%2.1 pCi/L−14.5 points
Greensville County, VAborders it20.0%0.7 pCi/L−39.5 points
Where Brunswick County's reported results fell, 2008 to 2017, laboratory, beside Virginia and the United States
ResultBrunswick County testsBrunswick County shareVirginia shareU.S. shareAgainst Virginia
Under 2 pCi/L718.4%44.7%39.6%−26.3 points
2 to 4 pCi/L1642.1%24.9%24.7%+17.2 points
4 pCi/L and above1539.5%30.4%35.7%+9.1 points
Brunswick 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
Tazewell County26 of 8437240.3%2.8 pCi/L
Culpeper County27 of 8489140.1%3.2 pCi/L
Alleghany County28 of 845040.0%3.0 pCi/L
Prince Edward County28 of 845040.0%2.5 pCi/L
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
Brunswick County ten-year laboratory totals, against Virginia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestVirginia, pooledChange from the row before
2008 to 20173839.5%2.8 pCi/L40.9 pCi/L30.4%+0.6 points
2007 to 20163638.9%2.8 pCi/L33.6 pCi/L30.6%+2.5 points
2006 to 20153336.4%2.7 pCi/L33.6 pCi/L30.7%+2.0 points
2005 to 20143234.4%3.4 pCi/L33.6 pCi/L30.3%First on file

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

Brunswick County, Geology

The ground under Brunswick County

Predicted

Most of the ground under Brunswick County is one class on USGS's geologic map: 86.9% of its land is high radon potential, with 0.2% moderate and 12.9% low. The map puts 86.9% of Brunswick County in the area it calls Goochland Terrane and 7.4% in Eastern Slate Belt, with one smaller area beside them. USGS gives the first a radon index of 13, in the high band (12 to 17), and the second 8, in the low band (5 to 8).

USGS's geologic areas under Brunswick County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Goochland TerraneGranite, pegmatites, granitic gneiss, schist and gneiss, slate, and phyllite.High1386.9%
Eastern Slate BeltProterozoic to Cambrian metamudstone and argillite, interbedded with metamorphosed sandstone, conglomerate, and volcanic rock.Low87.4%
Tertiary Coastal Plain SedimentsTertiary Coastal Plain sand, silt, clayLow85.5%

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

Brunswick County beside the ground around it

Brunswick County has more high-potential ground than Virginia as a whole: 86.9% of its land against 47.9%. Of the 7 counties that border it, 1 has more high-potential ground, Nottoway County the most at 100%.

Share of land by USGS radon potential: Brunswick County, the 7 counties bordering it and Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Brunswick CountyZone 112.9%0.2%86.9%
Greensville CountyZone 399.5%None0.5%
Dinwiddie CountyZone 132.6%None67.4%
Lunenburg CountyZone 2None40.5%59.5%
Nottoway CountyZone 1NoneNone100%
Mecklenburg CountyZone 20.2%61.4%38.4%
Warren County, NCZone 2None100%None
Northampton County, NCZone 397.5%2.5%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

Brunswick County, Local resources

Radon testing and mitigation in Brunswick 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

Brunswick County, Questions

Questions about radon in Brunswick County

Are radon levels high in Brunswick County?

Over the 2008 to 2017 laboratory totals, 39.5% of the radon tests reported to CDC for Brunswick County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.8 pCi/L. Of 84 Virginia counties with 30 or more tests for the same period, 30 reported a higher share; pooled, the state comes to 30.4%.

Which counties border Brunswick County?

Brunswick County borders 7 counties: Greensville County, VA, Dinwiddie County, VA, Lunenburg County, VA, Nottoway County, VA, Mecklenburg County, VA, Warren County, NC and Northampton County, NC.

Products

Brunswick County, Products

Testing a home in Brunswick County

In Brunswick County, 39.5% of 38 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 30.4% pooled across Virginia. In Zone 1 the year-round level in Brunswick County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.

Test kits and monitors3

See every kit and monitor

Brunswick County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Brunswick County

Explore

Brunswick County, Bordering counties

Counties bordering Brunswick County

Calculated by Radon411

Brunswick County, Cities and towns

Cities and towns in Brunswick County

About 15,727 people live in Brunswick County by the Census Bureau's estimate for July 1, 2025, 97 fewer than in 2020 (−0.6%). That works out to 28 people per square mile of land. No town dominates: Lawrenceville, the largest, has 985 residents, 6.3% of the total. Reported testing is thin here: 38 tests over 2008 to 2017, or 2.4 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 6.0.

From Lawrenceville to Brodnax, CDC publishes no figure by town: each reads Brunswick County's.

The cities and towns in Brunswick County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Lawrenceville985−1.6%6.3%
Alberta295−1.7%1.9%
Brodnaxextends beyond Brunswick County285−0.3%Counted whole

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

Brunswick County, Homes

Homes in Brunswick County

Of Brunswick County's 7,935 homes, 67% are detached houses, against 61% across Virginia; 27% are mobile homes. Half of its homes were built before 1981, close to Virginia's 1984: 24% date from before 1960 and 24% from 2000 or later. 73% 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 Brunswick County, Virginia, 2019 to 2023
HomesBrunswick CountyVirginia
Housing units7,9353,654,784
Detached houses67%61%
In buildings of 5 or more2%19%
Mobile homes27%4%
Built before 196024%19%
Built since 200024%25%
Middle year built19811984
Owner-occupied73%67%

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