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Radon Levels in Walton County, Georgia

EPA puts Walton County in Zone 2, its middle radon zone, and high results are common there: 42.2% of the 830 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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

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  • Share at 4+ pCi/L

    42.2%

    17.4 pts above GA

    Walton
    42.2%
    Georgia
    24.8%

    830 tests, 2008 to 2017

  • Median result

    3.3pCi/L

    Below action level

    Walton
    3.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    830

    9th of 57 by tests

    Walton
    830
    Fulton
    4,858

    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 Georgia

    7 of 57

    Top quarter

    Walton
    42.2%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Walton County

Starts at Walton County's median, 3.3 pCi/L

3.3pCi/L

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

EPA’s reading of 3.3 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. Walton County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Walton County, At a glance

Walton County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Walton 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Walton County, 2008 to 2017, laboratory
Under 2 pCi/L: 30%2 to 4 pCi/L: 28%4 pCi/L and above: 42%

Of 830 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Walton County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L25230.4%
2 to 4 pCi/L22827.5%
4 pCi/L and above35042.2%
What these figures count

These are the 830 tests reported to CDC for Walton 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

Walton County, Compared

Walton County radon figures, compared

Calculated by Radon411

In Walton County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (350 of 830) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 6.5 points higher. Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Walton County runs 17.4 points above its state.

Of 6 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 5 a smaller one; the spread is 16.7% (Morgan County) to 48.3% (Barrow County). By share, Walton County is 7th of 57 Georgia counties with 30 or more tests for the same period.

Half the tests came in under 3.3 pCi/L and half over it; the single highest reached 34.2 pCi/L. Below the action level, 252 tests (30.4%) came in under 2 pCi/L, against 44.0% statewide, and 228 tests (27.5%) fell between 2 and 4, against 31.2% statewide.

Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 42.2% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 51 tests taken after mitigation in Walton County for the same period: tests in homes where a fix was already in.

CDC's ten-year totals for Walton County went from 1,050 tests (2005 to 2014) to 830 (2008 to 2017), the share going from 37.3% to 42.2%.

Walton County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Walton County
Walton County83042.2%3.3 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled−17.4 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−6.5 points
Douglas Countyhighest in the state35547.3%3.7 pCi/L+5.1 points
Richmond Countylowest in the state320.0%1.4 pCi/L−42.2 points
Barrow County, GAborders it32148.3%3.8 pCi/L+6.1 points
Gwinnett County, GAborders it4,18732.4%2.7 pCi/L−9.8 points
Rockdale County, GAborders it24729.1%2.3 pCi/L−13.1 points
Newton County, GAborders it18625.8%2.1 pCi/L−16.4 points
Oconee County, GAborders it48319.0%1.8 pCi/L−23.2 points
Morgan County, GAborders it5416.7%1.5 pCi/L−25.5 points
Where Walton County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultWalton County testsWalton County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L25230.4%44.0%39.6%−13.6 points
2 to 4 pCi/L22827.5%31.2%24.7%−3.7 points
4 pCi/L and above35042.2%24.8%35.7%+17.4 points
Walton 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
Douglas County2 of 5735547.3%3.7 pCi/L
Gilmer County3 of 5729046.6%3.8 pCi/L
Lumpkin County4 of 5713646.3%3.6 pCi/L
Fannin County5 of 5730044.7%3.5 pCi/L
Union County6 of 5727644.6%3.3 pCi/L
Walton County7 of 5783042.2%3.3 pCi/L
Carroll County8 of 5719040.5%3.4 pCi/L
Hart County9 of 5710740.2%3.4 pCi/L
Jackson County10 of 5746040.0%3.2 pCi/L
Hall County11 of 571,30339.8%3.2 pCi/L
Pickens County12 of 5713337.6%3.1 pCi/L
Walton County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201783042.2%3.3 pCi/L34.2 pCi/L24.8%+2.0 points
2007 to 201692240.2%3.2 pCi/L34.2 pCi/L23.9%+1.0 points
2006 to 20151,02139.2%3.0 pCi/L34.2 pCi/L23.7%+1.9 points
2005 to 20141,05037.3%2.8 pCi/L37.3 pCi/L23.2%First on file

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

Walton County, Geology

The ground under Walton County

Predicted

USGS's geologic map puts all of Walton County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Georgiabama Thrust Stack (South), to which USGS gives a radon index of 9, in the moderate band (9 to 11).

USGS's geologic areas under Walton County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Georgiabama Thrust Stack (South)Schist, amphibolite and granite.Moderate9100%

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

Walton County beside the ground around it

Walton County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Barrow County comes nearest at 100%.

Share of land by USGS radon potential: Walton County, the 6 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Walton CountyZone 2None100%None
Newton CountyZone 2None100%None
Rockdale CountyZone 2None100%None
Morgan CountyZone 27.8%92.2%None
Barrow CountyZone 2None100%None
Oconee CountyZone 2None100%None
Gwinnett CountyZone 1None100%None
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

Walton County, Local resources

Radon testing and mitigation in Walton County

What Georgia's program says
Licensing of radon professionals
There are no laws mandating a mitigator receive certification in Georgia, however, many mitigators choose to get certified by one of two national programs.

What it means

Walton County, Questions

Questions about radon in Walton County

Are radon levels high in Walton County?

Over the 2008 to 2017 laboratory totals, 42.2% of the radon tests reported to CDC for Walton County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.3 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 6 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Walton County?

Walton County borders 6 counties: Newton County, Rockdale County, Morgan County, Barrow County, Oconee County and Gwinnett County.

Products

Walton County, Products

Testing a home in Walton County

In Walton County, 42.2% of 830 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.8% pooled across Georgia. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Walton County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Walton County homes, compared

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Walton County, Bordering counties

Counties bordering Walton County

Calculated by Radon411

Walton County, Cities and towns

Cities and towns in Walton County

Walton County is growing: the Census Bureau puts it at 112,696 residents on July 1, 2025, up 16.0% from 97,115 in 2020. That works out to 345 people per square mile of land. Loganville, the largest place on its list (17,212 residents in all), extends beyond Walton County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 830 reported tests for 2008 to 2017 come to 7.4 for every 1,000 residents (2025 estimate), against 2.7 for Georgia.

From Loganville to Jersey, CDC publishes no figure by town: each reads Walton County's.

The cities and towns in Walton County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Loganvilleextends beyond Walton County17,212+20.9%Counted whole
Monroe16,507+9.8%14.6%
Social Circleextends beyond Walton County5,537+10.5%Counted whole
Walnut Grove1,735+31.1%1.5%
Between497+20.9%0.4%
Good Hope420+21.7%0.4%
Jersey157+8.3%0.1%

7 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 Walton County is counted whole, so it has no share.

Walton County, Homes

Homes in Walton County

Walton County is a place of houses on their own lots: 86% of its 36,613 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1997, close to Georgia's 1991: 8% date from before 1960 and 42% from 2000 or later. Owners live in 79% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.

Homes in Walton County, Georgia, 2019 to 2023
HomesWalton CountyGeorgia
Housing units36,6134,483,873
Detached houses86%66%
In buildings of 5 or more2%16%
Mobile homes6%8%
Built before 19608%12%
Built since 200042%33%
Middle year built19971991
Owner-occupied79%65%

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