Locations and reports
Radon Levels in Alabama
What this means for you
- Your area: EPA rates 13 of Alabama's 67 classified counties Zone 1, the highest of its three radon zones. Zones are predictions for whole counties, and homes with elevated levels occur in all three zones.
- Local tests: CDC publishes Alabama's radon test results by county. Open your county below to see its figures.
- Your home: The only way to know your home’s level is to test it.
pCi/L (picocuries per liter) is the unit radon is measured in. EPA recommends fixing a home at 4 pCi/L or above, its action level.
For Alabama, EPA's Map of Radon Zones places 13 of its 67 classified counties in Zone 1, highest predicted potential, a prediction for each county as a whole. Radon levels vary from home to home, so only a test measures the level in yours.
Predicted: EPA radon zone
67 of 67 counties classified
EPA classifies counties, not states. Of the 67 counties in Alabama with a zone, 13 are in Zone 1, 33 in Zone 2 and 21 in Zone 3.
- Zone 1: Highest predicted potentialgreater than 4 pCi/L13 of 67 counties · 19.4%
- Zone 2: Moderate predicted potential2 to 4 pCi/L33 of 67 counties · 49.3%
- Zone 3: Lower predicted potentialless than 2 pCi/L21 of 67 counties · 31.3%
An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.
This is a county-level geologic prediction. It is not a measurement of any address, and houses with elevated radon are found in all three zones.
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC publishes Alabama's radon test figures by county: 65 of its 67 counties have one. Each county's share is in the county list.
Alabama, In figures
Alabama in figures
What the published data says about Alabama, in words. A zone and a share of tests describe an area, never the level in any one home.
Predicted
PredictedEPA places 13 of Alabama's 67 counties in Zone 1, 33 in Zone 2 and 21 in Zone 3.
Zone 1 counties, A to Z, begin with Calhoun County, Clay County and Cleburne County; the county section below lists all 13.
Compared
Calculated by Radon41119% of Alabama's counties with a zone on file are in Zone 1, a smaller share than across all U.S. counties (34%). It is a share of counties, not of land, people or homes.
Reported tests
MeasuredCDC has no statewide testing figure for Alabama on file here.
65 of the 67 counties have a published county figure; the most tests in each one's latest year were reported for Madison County (2,959 in 2017), Lauderdale County (1,151 in 2017) and Jefferson County (630 in 2017).
Local record
Alabama's radon program is the Alabama Radon Program, run by Alabama Department of Public Health; its contacts are under Local resources.
One city has a page setting the figures of the counties it lies in side by side: Huntsville.
Alabama, Counties
Alabama counties by EPA zone
PredictedAll 67 counties, by the zone EPA predicts for each. Every county has its own report.
Zone 1: highest predicted potential13
- Calhoun County18.9% of reported tests at or above 4 pCi/L, 2017
- Clay County17.9% of reported tests at or above 4 pCi/L, 2017
- Cleburne County18.8% of reported tests at or above 4 pCi/L, 2017
- Colbert County36.2% of reported tests at or above 4 pCi/L, 2017
- Coosa County0.0% of reported tests at or above 4 pCi/L, 2017
- Franklin County18.1% of reported tests at or above 4 pCi/L, 2017
- Jackson County17.5% of reported tests at or above 4 pCi/L, 2017
- Lauderdale County27.2% of reported tests at or above 4 pCi/L, 2017
- Lawrence County16.2% of reported tests at or above 4 pCi/L, 2017
- Limestone County10.1% of reported tests at or above 4 pCi/L, 2017
- Madison County25.2% of reported tests at or above 4 pCi/L, 2017
- Morgan County14.6% of reported tests at or above 4 pCi/L, 2017
- Talladega County18.5% of reported tests at or above 4 pCi/L, 2017
Zone 2: moderate predicted potential33
- Autauga County17.1% of reported tests at or above 4 pCi/L, 2017
- Barbour County0.0% of reported tests at or above 4 pCi/L, 2017
- Bibb County25.0% of reported tests at or above 4 pCi/L, 2017
- Blount County13.6% of reported tests at or above 4 pCi/L, 2017
- Bullock CountyReported testing not yet available
- Cherokee County10.0% of reported tests at or above 4 pCi/L, 2017
- Chilton County11.1% of reported tests at or above 4 pCi/L, 2017
- Cullman County11.4% of reported tests at or above 4 pCi/L, 2017
- Dallas County0.0% of reported tests at or above 4 pCi/L, 2017
- DeKalb County13.2% of reported tests at or above 4 pCi/L, 2017
- Elmore County22.2% of reported tests at or above 4 pCi/L, 2017
- Etowah County19.6% of reported tests at or above 4 pCi/L, 2017
- Fayette County0.0% of reported tests at or above 4 pCi/L, 2017
- Greene County0.0% of reported tests at or above 4 pCi/L, 2017
- Hale County50.0% of reported tests at or above 4 pCi/L, 2017
- Jefferson County10.7% of reported tests at or above 4 pCi/L, 2017
- Lamar County75.0% of reported tests at or above 4 pCi/L, 2017
- Lee County12.3% of reported tests at or above 4 pCi/L, 2017
- Lowndes County0.0% of reported tests at or above 4 pCi/L, 2017
- Macon County22.2% of reported tests at or above 4 pCi/L, 2017
- Marion County8.0% of reported tests at or above 4 pCi/L, 2017
- Marshall County15.1% of reported tests at or above 4 pCi/L, 2017
- Montgomery County9.7% of reported tests at or above 4 pCi/L, 2017
- Perry County0.0% of reported tests at or above 4 pCi/L, 2017
- Pickens County0.0% of reported tests at or above 4 pCi/L, 2017
- Randolph County40.0% of reported tests at or above 4 pCi/L, 2017
- Russell County0.0% of reported tests at or above 4 pCi/L, 2017
- Shelby County11.3% of reported tests at or above 4 pCi/L, 2017
- St. Clair County14.0% of reported tests at or above 4 pCi/L, 2017
- Sumter County0.0% of reported tests at or above 4 pCi/L, 2017
- Tuscaloosa County8.5% of reported tests at or above 4 pCi/L, 2017
- Walker County33.3% of reported tests at or above 4 pCi/L, 2017
- Winston County16.7% of reported tests at or above 4 pCi/L, 2017
Zone 3: lower predicted potential21
- Baldwin County0.0% of reported tests at or above 4 pCi/L, 2017
- Butler County0.0% of reported tests at or above 4 pCi/L, 2017
- Chambers County0.0% of reported tests at or above 4 pCi/L, 2017
- Choctaw County0.0% of reported tests at or above 4 pCi/L, 2017
- Clarke County0.0% of reported tests at or above 4 pCi/L, 2017
- Coffee County16.7% of reported tests at or above 4 pCi/L, 2017
- Conecuh County0.0% of reported tests at or above 4 pCi/L, 2017
- Covington County0.0% of reported tests at or above 4 pCi/L, 2017
- Crenshaw County0.0% of reported tests at or above 4 pCi/L, 2017
- Dale County0.0% of reported tests at or above 4 pCi/L, 2017
- Escambia County0.0% of reported tests at or above 4 pCi/L, 2017
- Geneva County0.0% of reported tests at or above 4 pCi/L, 2017
- Henry County0.0% of reported tests at or above 4 pCi/L, 2017
- Houston County23.1% of reported tests at or above 4 pCi/L, 2017
- Marengo County50.0% of reported tests at or above 4 pCi/L, 2017
- Mobile County3.8% of reported tests at or above 4 pCi/L, 2017
- Monroe County0.0% of reported tests at or above 4 pCi/L, 2017
- Pike County44.4% of reported tests at or above 4 pCi/L, 2017
- Tallapoosa County6.3% of reported tests at or above 4 pCi/L, 2017
- Washington County0.0% of reported tests at or above 4 pCi/L, 2017
- Wilcox CountyReported testing not yet available
Alabama, Cities
Cities in Alabama with their own page
Radon data is published by county, not by city. Each city page sets the figures of the counties the city lies in side by side.
Alabama, Local resources
Local resources in Alabama
Who to ask in Alabama: the state's radon program, test kits and professionals.
Alabama Radon Program
Alabama Department of Public Health
Alabama’s radon program answers questions about testing, mitigation and the rules where you live.
- Phone
- (334) 290-6244
Test kits
The program says: Due to high demand, the free radon test kits are currently unavailable.
Radon professionals
2 professionals are listed in Alabama.
Professionals in AlabamaAlabama, Questions
Questions about radon in Alabama
Common questions9 questions, answered from the figures above
Is radon a problem in Alabama?
EPA's Map of Radon Zones places 13 of the 67 Alabama counties it classifies in Zone 1, the highest predicted potential, 33 in Zone 2 and 21 in Zone 3. An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.
Which Alabama counties are in EPA radon Zone 1?
13 counties are in Zone 1: Calhoun County, Clay County, Cleburne County, Colbert County, Coosa County, Franklin County, Jackson County, Lauderdale County, and 5 more in the county table on this page. Zone 1 is EPA's class for highest predicted potential, a predicted average indoor screening level greater than 4 pCi/L. A zone is a prediction for a county, not a measurement of any home.
Radon in Calhoun CountyRadon in Clay CountyRadon in Cleburne County
How do I get a radon test in Alabama?
EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. The Alabama radon program is the place to ask about certified testers and any test kit offer it runs.
How to test a homeFree and low-cost kits by stateAlabama radon program
Who does radon mitigation in Alabama?
Radon411's Alabama directory lists 2 certified radon companies. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional.
How radon mitigation worksWhat mitigation costsRadon professionals in Alabama
Which Alabama counties have the highest radon?
67 of Alabama's 67 counties have an EPA radon zone published here. Radon411 will not rank counties on data it does not hold, and a zone is a prediction for an area rather than a measurement of any building.
What share of radon tests in Alabama are high?
CDC has published no statewide radon testing statistics for Alabama, so we cannot give a figure. Where CDC does publish one, the percentage describes radon tests reported to CDC, not homes.
Which EPA region is Alabama in?
Alabama is in EPA Region 4: Southeast.
Do I need to test my home in Alabama?
Yes, wherever you live in the state. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L.
Why does this page show coverage rather than one radon level for Alabama?
A statewide figure averages counties with very different geology and very different numbers of reported tests, so it hides more than it shows. The county report is the level at which the EPA zone, the geologic potential and the reported testing statistics are actually published, which is why the county table above links to every one of them.
What these figures mean if you own, buy, sell or rent
The zone counts on this page describe counties across Alabama. They are predictions for areas, and none of them measures your building.
- How to test a home
If you own your home
Test the lowest lived-in level; a short-term kit screens in days, a long-term kit reflects the year.
- Buying a house: radon guide
If you are buying
Ask for past results and any system's post-mitigation test, and test during the sale.
- Selling a house: radon guide
If you are selling
Testing before you list puts the timing in your hands; disclosure rules differ by state.
- Radon in rental homes
If you rent, or rent out a home
A tenant can test; a fix is the owner's to make, and duties differ by state.
How long a test has to run, under what conditions, and what EPA says a result means: the testing standard, in full.
Alabama, Products
Testing and mitigation products
Whatever the figures for Alabama show, only a test tells you about one home.
Testing
- Short-term test kitsPassive detectors exposed for a few days under closed-building conditions, then analyzed by a lab.
- Long-term test kitsDetectors exposed for more than 90 days, for a closer picture of the annual average.
- Continuous monitorsPowered devices that log radon on a repeating cycle, often used for transaction tests.
- Digital detectorsConsumer devices that display a running radon reading without a lab.
- Water radon testsKits for radon dissolved in well water, analyzed by a lab.
Mitigation
- Mitigation fansThe inline fan that keeps a soil depressurization system running, sized by the installer.
- System indicatorsU-tube manometers and fan alarms that show whether a mitigation system is still working.
- Sealing materialsCrack, joint and sump sealing used alongside a mitigation system, not instead of one.
Alabama / Next steps
What to do next
Learn
Know what radon is
What radon is, how it gets indoors, and why a county zone is not a reading for your home.
Learn about radonTest
Test the building you live in
Short-term or long-term, where the device goes, and closed-house conditions.
How to testFix
Bring a high level down
How a mitigation system works, and the retest that confirms it.
How mitigation worksFind a pro
Hire a certified professional
Measurement and mitigation professionals by state, with their certifications.
Find a professional
Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.