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Radon Levels in Chambers County, Alabama

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

  • Highest bordering

    33.9%

    Troup County

    Troup
    33.9%
    Lee
    12.3%

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

  • Nearest county

    12.3%

    Lee County, 22 miles

    Lee
    12.3%
    Alabama
    21.9%

    Share at 4+ pCi/L, 81 tests, 2008 to 2017

  • Ground above low

    6.6%

    58.1 pts below Alabama

    Chambers
    6.6%
    Alabama
    64.7%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Chambers
    3
    Needed
    30

    2008 to 2017, 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 Chambers 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.

The data

Chambers County, At a glance

Chambers County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Chambers 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 93% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 3 reported tests for Chambers County over the 2008 to 2017 laboratory totals, with a median of 0.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Chambers County beside the counties around it is how this page reads it.

What these figures count

Only 3 tests were reported to CDC for Chambers 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

Chambers County, Compared

Chambers County radon figures, compared

Calculated by Radon411

CDC's largest figure for Chambers County rests on 3 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 0.8 pCi/L, with a middle value of 0.8 pCi/L.

Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Troup County, GA reported the largest share at or above 4 pCi/L, 33.9%, and Lee County the smallest, 12.3%, with Harris County, GA at 15.7% between. Farther out, Clay County (37 miles away) at 17.9%, Elmore County (49 miles away) at 22.2% and Cleburne County (53 miles away) at 18.8% have figures too. Pooled across 65 Alabama counties, 21.9% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Colbert County reported the highest share (36.2%) and Baldwin County the lowest (0.0%). EPA's 1993 map puts Chambers County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 93% of the county's land low radon potential.

Alabama, the United States and the counties around Chambers County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Alabama, pooled65 counties, pooled12,56921.9%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Colbert Countyhighest in the state87136.2%2.7 pCi/L
Baldwin Countylowest in the state310.0%1.0 pCi/L
Randolph County, ALborders it1540.0%3.7 pCi/L
Troup County, GAborders it5633.9%2.9 pCi/L
Harris County, GAborders it5115.7%1.9 pCi/L
Lee County, ALborders it8112.3%1.3 pCi/L
Tallapoosa County, ALborders it166.3%0.9 pCi/L
The nearest Alabama counties to Chambers County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Lee County22 mi8112.3%1.3 pCi/L
Clay County37 mi3917.9%0.9 pCi/L
Elmore County49 mi3622.2%1.2 pCi/L
Cleburne County53 mi6918.8%1.5 pCi/L
Talladega County55 mi12418.5%1.6 pCi/L
Calhoun County64 mi23818.9%1.4 pCi/L
Montgomery County67 mi1039.7%0.9 pCi/L
St. Clair County77 mi9314.0%1.2 pCi/L
Chambers County ten-year laboratory totals, against Alabama's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestAlabama, pooledChange from the row before
2008 to 201730.0%0.8 pCi/L0.8 pCi/L21.9%Level
2007 to 201630.0%0.8 pCi/L1.3 pCi/L22.0%Level
2006 to 201530.0%0.8 pCi/L1.3 pCi/L22.0%Level
2005 to 201430.0%0.8 pCi/L1.3 pCi/L22.4%First on file

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

Chambers County, Geology

The ground under Chambers County

Predicted

Most of the ground under Chambers County is one class on USGS's geologic map: 93.4% of its land is low radon potential, with 6.6% moderate. The map puts 93.4% of Chambers County in the area it calls Inner Piedmont and 5.4% in Southern Piedmont, with one smaller area beside them. USGS gives the first a radon index of 7, in the low band (5 to 8), and the second 9, in the moderate band (9 to 11).

USGS's geologic areas under Chambers County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Inner PiedmontAmphibolite, ultramafic rocks, gneiss, schist, minor granite.Low793.4%
Southern PiedmontPaleozoic carbonate and metamorphic rocks.Moderate95.4%
Northern PiedmontGraphitic schists, phyllites, and felsic gneiss.Moderate90.8%

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

Chambers County beside the ground around it

Across Alabama 14.3% of the land is rated high; none of Chambers County's is. Of the 5 counties that border it, 1 has more high-potential ground, Randolph County the most at 13.8%.

Share of land by USGS radon potential: Chambers County, the 5 counties bordering it and Alabama
AreaEPA zoneLow potentialModerate potentialHigh potential
Chambers CountyZone 393.4%6.6%None
Randolph CountyZone 216.6%69.6%13.8%
Troup County, GAZone 2None100%None
Tallapoosa CountyZone 357.3%42.7%None
Lee CountyZone 217.1%82.9%None
Harris County, GAZone 215.3%84.7%None
Alabama67 counties, pooled by land areaVaries35.2%50.4%14.3%

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

What it means

Chambers County, Questions

Questions about radon in Chambers County

Are radon levels high in Chambers County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Chambers County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.8 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Troup County, GA reported the largest share at or above 4 pCi/L, 33.9%, and Lee County the smallest, 12.3%, with Harris County, GA at 15.7% between.

Which counties border Chambers County?

Chambers County borders 5 counties: Randolph County, AL, Troup County, GA, Tallapoosa County, AL, Lee County, AL and Harris County, GA.

Products

Chambers County, Products

Testing a home in Chambers County

No CDC figure names Chambers County; the nearest county with one, Lee County (22 miles away), reported 12.3% 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 Chambers County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Chambers County homes, compared

Explore

Chambers County, Bordering counties

Counties bordering Chambers County

Calculated by Radon411

Chambers County, Cities and towns

Cities and towns in Chambers County

About 34,253 people live in Chambers County by the Census Bureau's estimate for July 1, 2025, 328 fewer than in 2020 (−0.9%). That works out to 57 people per square mile of land. Its largest town, Valley, has 10,294 residents, 30.1% of the total. Reported testing is thin here: 3 tests over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.4.

From Valley to Five Points, CDC publishes no figure by town: each reads Chambers County's.

The cities and towns in Chambers County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Valley10,294−1.2%30.1%
Lanett6,781−2.2%19.8%
La Fayette2,621−1.9%7.7%
Cusseta155+2.0%0.5%
Waverlyextends beyond Chambers County150LevelCounted whole
Five Points118Level0.3%

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

Chambers County, Homes

Homes in Chambers County

Of Chambers County's 16,427 homes, 70% are detached houses, against 69% across Alabama; 14% are mobile homes. Half of its homes were built before 1979, close to Alabama's 1985: 27% date from before 1960 and 21% from 2000 or later. 71% of occupied homes are lived in by their owner (Alabama: 70%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Chambers County, Alabama, 2019 to 2023
HomesChambers CountyAlabama
Housing units16,4272,316,192
Detached houses70%69%
In buildings of 5 or more11%12%
Mobile homes14%13%
Built before 196027%16%
Built since 200021%27%
Middle year built19791985
Owner-occupied71%70%

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