
Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
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
3 of 5 neighbours have 30+ tests, 2008 to 2017
Nearest county
12.3%
Lee County, 22 miles
Share at 4+ pCi/L, 81 tests, 2008 to 2017
Ground above low
6.6%
58.1 pts below Alabama
Share of land USGS rates moderate or high potential
Tests reported
3
Too few for a share
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Chambers County
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
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
Predicted: EPA radon zone
USGS geologic potential: Low across 93% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
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.
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).
Chambers County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Chambers County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Inner Piedmont | Amphibolite, ultramafic rocks, gneiss, schist, minor granite. | Low | 7 | 93.4% |
| Southern Piedmont | Paleozoic carbonate and metamorphic rocks. | Moderate | 9 | 5.4% |
| Northern Piedmont | Graphitic schists, phyllites, and felsic gneiss. | Moderate | 9 | 0.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Chambers County, Local resources
What it means
Chambers County, Questions
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.
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
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 monitors: 1 of 3
Explore
Chambers County, Bordering counties
40.0%at or above 4 pCi/L
Median 3.7 pCi/L · 15 tests
33.9%at or above 4 pCi/L
Median 2.9 pCi/L · 56 tests
15.7%at or above 4 pCi/L
Median 1.9 pCi/L · 51 tests
12.3%at or above 4 pCi/L
Median 1.3 pCi/L · 81 tests
6.3%at or above 4 pCi/L
Median 0.9 pCi/L · 16 tests
Chambers County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Valley | 10,294 | −1.2% | 30.1% |
| Lanett | 6,781 | −2.2% | 19.8% |
| La Fayette | 2,621 | −1.9% | 7.7% |
| Cusseta | 155 | +2.0% | 0.5% |
| Waverlyextends beyond Chambers County | 150 | Level | Counted whole |
| Five Points | 118 | Level | 0.3% |
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
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 | Chambers County | Alabama |
|---|---|---|
| Housing units | 16,427 | 2,316,192 |
| Detached houses | 70% | 69% |
| In buildings of 5 or more | 11% | 12% |
| Mobile homes | 14% | 13% |
| Built before 1960 | 27% | 16% |
| Built since 2000 | 21% | 27% |
| Middle year built | 1979 | 1985 |
| Owner-occupied | 71% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.