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Radon Levels in Newton County, Georgia

EPA puts Newton County in Zone 2, its middle radon zone, and 25.8% of its 186 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

    25.8%

    1.0 pts above GA

    Newton
    25.8%
    Georgia
    24.8%

    186 tests, 2008 to 2017

  • Median result

    2.1pCi/L

    Below action level

    Newton
    2.1 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    186

    25th of 57 by tests

    Newton
    186
    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

    28 of 57

    Middle half

    Newton
    25.8%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Newton County

Starts at Newton County's median, 2.1 pCi/L

2.1pCi/L

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

EPA’s reading of 2.1 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. Newton County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Newton County, At a glance

Newton County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Newton 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 Newton County, 2008 to 2017, laboratory

Reported results by concentration band, Newton County, 2008 to 2017, laboratory
Under 2 pCi/L: 43%2 to 4 pCi/L: 31%4 pCi/L and above: 26%

Of 186 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Newton County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L8043.0%
2 to 4 pCi/L5831.2%
4 pCi/L and above4825.8%
What these figures count

These are the 186 tests reported to CDC for Newton 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

Newton County, Compared

Newton County radon figures, compared

Calculated by Radon411

Newton County's 186 reported tests over the 2008 to 2017 laboratory totals had a middle value of 2.1 pCi/L and a maximum of 14.5 pCi/L, and 25.8% reached 4 pCi/L. Georgia as a whole (129 Georgia counties, pooled) comes to 24.8%: 1.0 points lower than here.

Among its state's counties it ranks 28th 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, 80 tests (43.0%) came in under 2 pCi/L, against 44.0% statewide, and 58 tests (31.2%) fell between 2 and 4, against 31.2% statewide. CDC's ten-year totals for Newton County went from 150 tests (2005 to 2014) to 186 (2008 to 2017), the share going from 24.0% to 25.8%.

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

Next door, the shares run from 16.7% in Morgan County to 42.2% in Walton County, with Henry County and Morgan County below Newton County.

CDC also counts 13 tests taken after mitigation in Newton County for the same period: tests in homes where a fix was already in.

Newton County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Newton County
Newton County18625.8%2.1 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled−1.0 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+9.9 points
Barrow Countyhighest in the state32148.3%3.8 pCi/L+22.5 points
Richmond Countylowest in the state320.0%1.4 pCi/L−25.8 points
Walton County, GAborders it83042.2%3.3 pCi/L+16.4 points
Rockdale County, GAborders it24729.1%2.3 pCi/L+3.3 points
Jasper County, GAborders it2227.3%2.3 pCi/L+1.5 points
Henry County, GAborders it38422.7%2.1 pCi/L−3.1 points
Morgan County, GAborders it5416.7%1.5 pCi/L−9.1 points
Butts County, GAborders it156.7%2.8 pCi/L−19.1 points
Where Newton County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultNewton County testsNewton County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L8043.0%44.0%39.6%−1.0 points
2 to 4 pCi/L5831.2%31.2%24.7%Level
4 pCi/L and above4825.8%24.8%35.7%+1.0 points
Newton 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
Rockdale County23 of 5724729.1%2.3 pCi/L
Jones County24 of 573129.0%2.2 pCi/L
Rabun County25 of 576926.1%2.0 pCi/L
Madison County26 of 5721126.1%2.4 pCi/L
Paulding County27 of 5728926.0%2.3 pCi/L
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
Newton County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201718625.8%2.1 pCi/L14.5 pCi/L24.8%+0.5 points
2007 to 201617425.3%2.1 pCi/L16.2 pCi/L23.9%+0.5 points
2006 to 201516124.8%2.2 pCi/L16.2 pCi/L23.7%+0.8 points
2005 to 201415024.0%2.2 pCi/L16.2 pCi/L23.2%First on file

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

Newton County, Geology

The ground under Newton County

Predicted

USGS's geologic map puts all of Newton 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 Newton 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.

Newton County beside the ground around it

Newton 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; Henry County comes nearest at 100%.

Share of land by USGS radon potential: Newton County, the 6 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Newton CountyZone 2None100%None
Rockdale CountyZone 2None100%None
Walton CountyZone 2None100%None
Henry CountyZone 2None100%None
Jasper CountyZone 246.1%53.9%None
Butts CountyZone 20.6%99.4%None
Morgan CountyZone 27.8%92.2%None
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

Newton County, Local resources

Radon testing and mitigation in Newton 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

Newton County, Questions

Questions about radon in Newton County

Are radon levels high in Newton County?

Over the 2008 to 2017 laboratory totals, 25.8% of the radon tests reported to CDC for Newton County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.1 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 27 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Newton County?

Newton County borders 6 counties: Rockdale County, Walton County, Henry County, Jasper County, Butts County and Morgan County.

Products

Newton County, Products

Testing a home in Newton County

In Newton County, 25.8% of 186 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 Newton County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Newton County homes, compared

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Newton County, Bordering counties

Counties bordering Newton County

Calculated by Radon411

Newton County, Cities and towns

Cities and towns in Newton County

Newton County is growing: the Census Bureau puts it at 125,583 residents on July 1, 2025, up 11.2% from 112,902 in 2020. That works out to 459 people per square mile of land. No town dominates: Covington, the largest, has 17,477 residents, 13.9% of the total. Reported testing is thin here: 186 tests over 2008 to 2017, or 1.5 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Covington to Mansfield, CDC publishes no figure by town: each reads Newton County's.

The cities and towns in Newton County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Covington17,477+22.8%13.9%
Social Circleextends beyond Newton County5,537+10.5%Counted whole
Oxford2,291Level1.8%
Porterdale1,913+5.7%1.5%
Newborn742+10.3%0.6%
Mansfield492+8.8%0.4%

6 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 Newton County is counted whole, so it has no share.

Newton County, Homes

Homes in Newton County

Newton County is a place of houses on their own lots: 87% of its 42,836 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1998, close to Georgia's 1991: 7% date from before 1960 and 45% from 2000 or later. 74% 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 Newton County, Georgia, 2019 to 2023
HomesNewton CountyGeorgia
Housing units42,8364,483,873
Detached houses87%66%
In buildings of 5 or more5%16%
Mobile homes4%8%
Built before 19607%12%
Built since 200045%33%
Middle year built19981991
Owner-occupied74%65%

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