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Radon Levels in Houston County, Georgia

EPA puts Houston County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 11.3% of 62 (2008 to 2017, laboratory totals) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Share at 4+ pCi/L

    11.3%

    13.5 pts below GA

    Houston
    11.3%
    Georgia
    24.8%

    62 tests, 2008 to 2017

  • Median result

    1.4pCi/L

    Below action level

    Houston
    1.4 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    62

    46th of 57 by tests

    Houston
    62
    Fulton
    4,858

    Reported to CDC before any fix, 2008 to 2017

  • 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

  • Rank in Georgia

    52 of 57

    Lowest quarter

    Houston
    11.3%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Houston County

Starts at Houston County's median, 1.4 pCi/L

1.4pCi/L

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

EPA’s reading of 1.4 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. Houston County's median reported result, 2008 to 2017.

The data

Houston County, At a glance

Houston County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Houston 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 Houston County, 2008 to 2017, laboratory

Reported results by concentration band, Houston County, 2008 to 2017, laboratory
Under 2 pCi/L: 68%2 to 4 pCi/L: 21%4 pCi/L and above: 11%

Of 62 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Houston County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L4267.7%
2 to 4 pCi/L1321.0%
4 pCi/L and above711.3%
What these figures count

These are the 62 tests reported to CDC for Houston 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

Houston County, Compared

Houston County radon figures, compared

Calculated by Radon411

Houston County reports fewer high tests than Georgia overall. 11.3% of its 62 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 13.5 points below the 24.8% pooled from 129 Georgia counties.

Ordered from highest share down, it comes 52nd of 57 Georgia counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Houston County sits 24.4 points below it.

Bibb County, the one bordering county with a figure for the same period, reported 1.0%. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 11.3% share point the same way here.

Half the tests came in under 1.4 pCi/L and half over it; the single highest reached 18.3 pCi/L. The rest split 67.7% under 2 pCi/L and 21.0% from 2 to 4 (Georgia: 44.0% and 31.2%).

CDC's ten-year totals for Houston County went from 49 tests (2005 to 2014) to 62 (2008 to 2017), the share going from 4.1% to 11.3%.

Houston County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Houston County
Houston County6211.3%1.4 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled+13.5 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+24.4 points
Barrow Countyhighest in the state32148.3%3.8 pCi/L+37.0 points
Richmond Countylowest in the state320.0%1.4 pCi/L−11.3 points
Peach County, GAborders it366.7%4.3 pCi/L+55.4 points
Twiggs County, GAborders it250.0%2.4 pCi/L+38.7 points
Crawford County, GAborders it250.0%2.2 pCi/L+38.7 points
Macon County, GAborders it333.3%1.3 pCi/L+22.0 points
Bibb County, GAborders it991.0%0.9 pCi/L−10.3 points
Bleckley County, GAborders it20.0%1.1 pCi/L−11.3 points
Pulaski County, GAborders it190.0%0.6 pCi/L−11.3 points
Where Houston County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultHouston County testsHouston County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L4267.7%44.0%39.6%+23.7 points
2 to 4 pCi/L1321.0%31.2%24.7%−10.2 points
4 pCi/L and above711.3%24.8%35.7%−13.5 points
Houston County ranked among the 57 Georgia counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Morgan County47 of 575416.7%1.5 pCi/L
Cobb County48 of 573,31516.3%1.9 pCi/L
Harris County49 of 575115.7%1.9 pCi/L
Forsyth County50 of 571,38313.0%1.9 pCi/L
Clarke County51 of 5758412.8%1.5 pCi/L
Houston County52 of 576211.3%1.4 pCi/L
Columbia County53 of 576311.1%0.9 pCi/L
Muscogee County54 of 571065.7%0.9 pCi/L
Bibb County55 of 57991.0%0.9 pCi/L
Chatham County56 of 57450.0%0.6 pCi/L
Richmond County56 of 57320.0%1.4 pCi/L
Houston County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 20176211.3%1.4 pCi/L18.3 pCi/L24.8%+3.1 points
2007 to 2016618.2%1.5 pCi/L18.3 pCi/L23.9%−0.6 points
2006 to 2015578.8%1.5 pCi/L18.3 pCi/L23.7%+4.7 points
2005 to 2014494.1%1.5 pCi/L4.5 pCi/L23.2%First on file

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

Houston County, Geology

The ground under Houston County

Predicted

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

USGS's geologic areas under Houston County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Coastal PlainCretaceous and Tertiary marine and coastal sediments including limestone, sandstone, sand, silt, and clay. Coastal plan sands containing glauconite may generate locally elevated radon.Low8100%

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

Houston County beside the ground around it

Across Georgia 26.5% of the land is rated moderate; none of Houston County's is. Of the 8 counties that border it, 1 has more moderate-potential ground, Crawford County the most at 0.1%.

Share of land by USGS radon potential: Houston County, the 8 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Houston CountyZone 3100%NoneNone
Peach CountyZone 3100%NoneNone
Twiggs CountyZone 3100%NoneNone
Bleckley CountyZone 3100%NoneNone
Pulaski CountyZone 3100%NoneNone
Bibb CountyZone 3100%NoneNone
Crawford CountyZone 399.9%0.1%None
Dooly CountyZone 3100%NoneNone
Macon CountyZone 3100%NoneNone
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

What it means

Houston County, Questions

Questions about radon in Houston County

Are radon levels high in Houston County?

Over the 2008 to 2017 laboratory totals, 11.3% of the radon tests reported to CDC for Houston County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 51 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Houston County?

Houston County borders 8 counties: Peach County, Twiggs County, Bleckley County, Pulaski County, Bibb County, Crawford County, Dooly County and Macon County.

Products

Houston County, Products

Testing a home in Houston County

In Houston County, 11.3% of 62 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.8% pooled across Georgia. 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 Houston County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Houston County homes, compared

Explore

Houston County, Bordering counties

Counties bordering Houston County

Calculated by Radon411

Houston County, Cities and towns

Cities and towns in Houston County

Houston County is growing: the Census Bureau puts it at 178,214 residents on July 1, 2025, up 8.5% from 164,325 in 2020. That works out to 474 people per square mile of land. Warner Robins, the largest place on its list (87,761 residents in all), extends beyond Houston County, so no share of the total is worked out for it. Reported testing is thin here: 62 tests over 2008 to 2017, or 0.3 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Warner Robins to Centerville, CDC publishes no figure by town: each reads Houston County's.

The cities and towns in Houston County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Warner Robinsextends beyond Houston County87,761+8.9%Counted whole
Perryextends beyond Houston County25,699+22.9%Counted whole
Centerville9,505+15.2%5.3%

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 Houston County is counted whole, so it has no share.

Houston County, Homes

Homes in Houston County

Of Houston County's 68,336 homes, 74% are detached houses, against 66% across Georgia; 11% are in buildings of five or more homes. Half of its homes were built before 1994, close to Georgia's 1991: 8% date from before 1960 and 39% from 2000 or later. 67% of occupied homes are lived in by their owner (Georgia: 65%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Houston County, Georgia, 2019 to 2023
HomesHouston CountyGeorgia
Housing units68,3364,483,873
Detached houses74%66%
In buildings of 5 or more11%16%
Mobile homes7%8%
Built before 19608%12%
Built since 200039%33%
Middle year built19941991
Owner-occupied67%65%

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