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Radon Levels in Walker County, Georgia

EPA puts Walker County in Zone 2, its middle radon zone, and 22.7% of its 44 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

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  • Share at 4+ pCi/L

    22.7%

    2.1 pts below GA

    Walker
    22.7%
    Georgia
    24.8%

    44 tests, 2008 to 2017

  • Median result

    1.6pCi/L

    Below action level

    Walker
    1.6 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    44

    53rd of 57 by tests

    Walker
    44
    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

    33 of 57

    Middle half

    Walker
    22.7%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Walker County

Starts at Walker County's median, 1.6 pCi/L

1.6pCi/L

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

EPA’s reading of 1.6 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. Walker County's median reported result, 2008 to 2017.

Interpret this reading

The data

Walker County, At a glance

Walker County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Walker 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: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Walker County, 2008 to 2017, laboratory
Under 2 pCi/L: 61%2 to 4 pCi/L: 16%4 pCi/L and above: 23%

Of 44 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Walker County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L2761.4%
2 to 4 pCi/L715.9%
4 pCi/L and above1022.7%
What these figures count

These are the 44 tests reported to CDC for Walker 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

Walker County, Compared

Walker County radon figures, compared

Calculated by Radon411

Walker County's 44 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.6 pCi/L and a maximum of 18.2 pCi/L, and 22.7% reached 4 pCi/L. Georgia as a whole (129 Georgia counties, pooled) comes to 24.8%: 2.1 points higher than here.

Among its state's counties it ranks 33rd of 57 Georgia counties with 30 or more tests for the same period. Statewide for the same period, Barrow County reported the highest share (48.3%) and Richmond County the lowest (0.0%).

Below the action level, 27 tests (61.4%) came in under 2 pCi/L, against 44.0% statewide, and 7 tests (15.9%) fell between 2 and 4, against 31.2% statewide. CDC's ten-year totals for Walker County went from 50 tests (2005 to 2014) to 44 (2008 to 2017), the share going from 18.0% to 22.7%.

EPA's 1993 zone map puts Walker County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Next door, the shares run from 13.2% in DeKalb County, AL to 31.4% in Gordon County, with Whitfield County, Floyd County and Hamilton County, TN below Walker County.

Walker County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Walker County
Walker County4422.7%1.6 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled+2.1 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+13.0 points
Barrow Countyhighest in the state32148.3%3.8 pCi/L+25.6 points
Richmond Countylowest in the state320.0%1.4 pCi/L−22.7 points
Chattooga County, GAborders it1560.0%5.0 pCi/L+37.3 points
Gordon County, GAborders it3531.4%2.1 pCi/L+8.7 points
Whitfield County, GAborders it10220.6%1.2 pCi/L−2.1 points
Floyd County, GAborders it11619.8%1.9 pCi/L−2.9 points
Hamilton County, TNborders it1,14819.3%1.7 pCi/L−3.4 points
Catoosa County, GAborders it5918.6%1.3 pCi/L−4.1 points
Dade County, GAborders it1717.6%1.5 pCi/L−5.1 points
DeKalb County, ALborders it6813.2%0.9 pCi/L−9.5 points
Where Walker County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultWalker County testsWalker County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L2761.4%44.0%39.6%+17.4 points
2 to 4 pCi/L715.9%31.2%24.7%−15.3 points
4 pCi/L and above1022.7%24.8%35.7%−2.1 points
Walker 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
Newton County28 of 5718625.8%2.1 pCi/L
Stephens County29 of 577925.3%2.2 pCi/L
White County30 of 579125.3%2.7 pCi/L
Bartow County31 of 5717724.9%2.2 pCi/L
Monroe County32 of 5724823.0%1.6 pCi/L
Walker County33 of 574422.7%1.6 pCi/L
Henry County34 of 5738422.7%2.1 pCi/L
Dawson County35 of 5714221.8%2.1 pCi/L
Fulton County36 of 574,85820.8%2.2 pCi/L
Whitfield County37 of 5710220.6%1.2 pCi/L
Clayton County38 of 5715420.1%1.6 pCi/L
Walker County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 20174422.7%1.6 pCi/L18.2 pCi/L24.8%+3.5 points
2007 to 20165219.2%1.4 pCi/L18.2 pCi/L23.9%+2.5 points
2006 to 20155416.7%1.4 pCi/L16.8 pCi/L23.7%−1.3 points
2005 to 20145018.0%1.4 pCi/L16.8 pCi/L23.2%First on file

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

Walker County, Geology

The ground under Walker County

Predicted

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

USGS's geologic areas under Walker County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Rome-Kingston Thrust StackLimestone and shale.Low8100%

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

Walker County beside the ground around it

Across Georgia 26.5% of the land is rated moderate; none of Walker County's is. Of the 8 counties that border it, 3 have more high-potential ground, Hamilton County, TN the most at 79.6%.

Share of land by USGS radon potential: Walker County, the 8 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Walker CountyZone 2100%NoneNone
Dade CountyZone 389.6%0.1%10.3%
Catoosa CountyZone 2100%NoneNone
Whitfield CountyZone 2100%NoneNone
Chattooga CountyZone 3100%NoneNone
DeKalb County, ALZone 2None99.7%0.2%
Hamilton County, TNZone 220.4%None79.6%
Gordon CountyZone 390.4%9.6%None
Floyd CountyZone 2100%NoneNone
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

Walker County, Local resources

Radon testing and mitigation in Walker 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

Walker County, Questions

Questions about radon in Walker County

Are radon levels high in Walker County?

Over the 2008 to 2017 laboratory totals, 22.7% of the radon tests reported to CDC for Walker County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.6 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 32 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Walker County?

Walker County borders 8 counties: Dade County, GA, Catoosa County, GA, Whitfield County, GA, Chattooga County, GA, DeKalb County, AL, Hamilton County, TN, Gordon County, GA and Floyd County, GA.

Products

Walker County, Products

Testing a home in Walker County

In Walker County, 22.7% of 44 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 Walker County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Walker County homes, compared

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Walker County, Bordering counties

Counties bordering Walker County

Calculated by Radon411

Walker County, Cities and towns

Cities and towns in Walker County

The Census Bureau estimates 70,250 residents in Walker County for July 1, 2025, 2,494 more than in 2020 (+3.7%). That works out to 157 people per square mile of land. Fort Oglethorpe, the largest place on its list (10,868 residents in all), extends beyond Walker County, so no share of the total is worked out for it. Reported testing is thin here: 44 tests over 2008 to 2017, or 0.6 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Fort Oglethorpe to Lookout Mountain, CDC publishes no figure by town: each reads Walker County's.

The cities and towns in Walker County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Fort Oglethorpeextends beyond Walker County10,868+5.4%Counted whole
LaFayette7,157+3.2%10.2%
Rossville3,922−1.1%5.6%
Chickamauga3,017+3.3%4.3%
Lookout Mountain1,662+1.1%2.4%

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

Walker County, Homes

Homes in Walker County

Walker County is a place of houses on their own lots: 77% of its 29,452 homes are detached single-family houses, against 66% across Georgia. The homes are older than Georgia's as a whole: half were built before 1978 (1991 for Georgia), and 26% date from before 1960. Owners live in 76% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.

Homes in Walker County, Georgia, 2019 to 2023
HomesWalker CountyGeorgia
Housing units29,4524,483,873
Detached houses77%66%
In buildings of 5 or more4%16%
Mobile homes13%8%
Built before 196026%12%
Built since 200020%33%
Middle year built19781991
Owner-occupied76%65%

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