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Radon Levels in Bamberg County, South Carolina

EPA puts Bamberg County in Zone 3, its lowest radon zone, and only 20 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

How to test this homeFind a certified tester

  • Highest bordering

    5.7%

    Orangeburg County

    Orangeburg
    5.7%

    1 of 5 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    5.7%

    Orangeburg County, 21 miles

    Orangeburg
    5.7%
    SC
    19.4%

    Share at 4+ pCi/L, 53 tests, 2008 to 2017

  • Ground above low

    None

    18.5 pts below SC

    Bamberg
    0.0%
    SC
    18.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    21

    Too few for a share

    Bamberg
    21
    Needed
    30

    2007 to 2016, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Bamberg County

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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.

Interpret this readingWhat a fix costs

The data

Bamberg County, At a glance

Bamberg County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Bamberg County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 20 reported tests for Bamberg County over the 2008 to 2017 laboratory totals, with a median of 1.0 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Bamberg County beside the counties around it is how this page reads it.

What these figures count

Only 20 tests were reported to CDC for Bamberg 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).

How to read these figures

Bamberg County, Compared

Bamberg County radon figures, compared

Calculated by Radon411

CDC's largest figure for Bamberg County rests on 21 tests over the 2007 to 2016 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 4.8 points and no rank or comparison is drawn from it. Results reached as high as 4.0 pCi/L, with a middle value of 1.0 pCi/L.

Orangeburg County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 5.7% of its tests at or above 4 pCi/L. Farther out, Dorchester County (39 miles away) at 4.8%, Aiken County (41 miles away) at 13.3% and Lexington County (49 miles away) at 12.5% have figures too. Pooled across 46 South Carolina counties, 19.4% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Oconee County reported the highest share (42.6%) and Florence County the lowest (0.0%). EPA's 1993 map puts Bamberg County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

South Carolina, the United States and the counties around Bamberg County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
South Carolina, pooled46 counties, pooled26,48119.4%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Oconee Countyhighest in the state2,46942.6%3.3 pCi/L
Florence Countylowest in the state590.0%0.7 pCi/L
Colleton County, SCborders it119.1%0.1 pCi/L
Orangeburg County, SCborders it535.7%0.9 pCi/L
Hampton County, SCborders it60.0%0.1 pCi/L
Allendale County, SCborders it10.0%0.1 pCi/L
Barnwell County, SCborders it60.0%1.9 pCi/L
The nearest South Carolina counties to Bamberg County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Orangeburg County21 mi535.7%0.9 pCi/L
Dorchester County39 mi1044.8%1.0 pCi/L
Aiken County41 mi24113.3%1.3 pCi/L
Lexington County49 mi59112.5%0.9 pCi/L
Richland County56 mi6714.9%0.7 pCi/L
Beaufort County60 mi2462.0%0.7 pCi/L
Sumter County62 mi4211.9%1.3 pCi/L
Berkeley County64 mi994.0%0.7 pCi/L
Bamberg County ten-year laboratory totals, against South Carolina's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestSouth Carolina, pooledChange from the row before
2008 to 2017205.0%1.0 pCi/L4.0 pCi/L19.4%+0.2 points
2007 to 2016214.8%1.0 pCi/L4.0 pCi/L19.3%Level
2006 to 2015214.8%1.0 pCi/L4.0 pCi/L19.8%−6.3 points
2005 to 2014911.1%0.2 pCi/L4.0 pCi/L19.8%First on file

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

Bamberg County, Geology

The ground under Bamberg County

Predicted

USGS's geologic map puts all of Bamberg County's mapped land in one class: low radon potential. 97.4% of it lies in the area the map calls Upper and Middle Coastal Plain, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Bamberg County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Upper and Middle Coastal PlainTertiary coastal plain sandy and silty sediments and marsh deposits.Low897.4%
Lower Coastal PlainDune, beach, and marine sediments.Low72.6%

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

Bamberg County beside the ground around it

Across South Carolina 0.2% of the land is rated high; none of Bamberg County's is. None of the 5 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Bamberg County, the 5 counties bordering it and South Carolina
AreaEPA zoneLow potentialModerate potentialHigh potential
Bamberg CountyZone 3100%NoneNone
Orangeburg CountyZone 3100%NoneNone
Barnwell CountyZone 3100%NoneNone
Allendale CountyZone 3100%NoneNone
Hampton CountyZone 3100%NoneNone
Colleton CountyZone 398.9%NoneNone
South Carolina46 counties, pooled by land areaVaries80.8%18.2%0.2%

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

Local help

Bamberg County, Local resources

Radon testing and mitigation in Bamberg County

What South Carolina's program says
Phone
1-800-768-0362
Email
radon@des.sc.gov

What it means

Bamberg County, Questions

Questions about radon in Bamberg County

Are radon levels high in Bamberg County?

Over the 2008 to 2017 laboratory totals, 5.0% of the radon tests reported to CDC for Bamberg County, South Carolina were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.0 pCi/L. Orangeburg County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 5.7% of its tests at or above 4 pCi/L.

Which counties border Bamberg County?

Bamberg County borders 5 counties: Orangeburg County, Barnwell County, Allendale County, Hampton County and Colleton County.

Products

Bamberg County, Products

Testing a home in Bamberg County

No CDC figure names Bamberg County; the nearest county with one, Orangeburg County (21 miles away), reported 5.7% 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. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Bamberg County.

Test kits and monitors3

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Best radon monitors for Bamberg County homes, compared

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Bamberg County, Bordering counties

Counties bordering Bamberg County

Calculated by Radon411

Bamberg County, Cities and towns

Cities and towns in Bamberg County

About 12,796 people live in Bamberg County by the Census Bureau's estimate for July 1, 2025, 463 fewer than in 2020 (−3.5%). That works out to 33 people per square mile of land. Its largest town, Denmark, has 3,059 residents, 23.9% of the total. Together its 5 incorporated places hold 52.1% of those residents; the other 47.9% live outside any of them. Reported testing is thin here: 21 tests over 2007 to 2016, or 1.6 for every 1,000 residents (2025 estimate), where South Carolina as a whole comes to 4.6.

From Denmark to Govan, CDC publishes no figure by town: each reads Bamberg County's.

The cities and towns in Bamberg County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Denmark3,059−3.4%23.9%
Bamberg2,920−4.6%22.8%
Ehrhardt432−4.6%3.4%
Olar201−3.8%1.6%
Govan54−1.8%0.4%

5 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).

Bamberg County, Homes

Homes in Bamberg County

Of Bamberg County's 6,598 homes, 67% are detached houses, against 64% across South Carolina; 23% are mobile homes. The homes are older than South Carolina's as a whole: half were built before 1977 (1991 for South Carolina), and 28% date from before 1960. 74% of occupied homes are lived in by their owner (South Carolina: 71%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Bamberg County, South Carolina, 2019 to 2023
HomesBamberg CountySouth Carolina
Housing units6,5982,401,638
Detached houses67%64%
In buildings of 5 or more3%13%
Mobile homes23%15%
Built before 196028%13%
Built since 200013%35%
Middle year built19771991
Owner-occupied74%71%

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