Locations and reports
Radon Levels in Florida
What this means for you
- Your area: None of Florida's 67 classified counties is in EPA 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 Florida'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 Florida, EPA's Map of Radon Zones places 0 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 Florida with a zone, 9 are in Zone 2 and 58 in Zone 3.
- Zone 2: Moderate predicted potential2 to 4 pCi/L9 of 67 counties · 13.4%
- Zone 3: Lower predicted potentialless than 2 pCi/L58 of 67 counties · 86.6%
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 Florida's radon test figures by county: 65 of its 67 counties have one. Each county's share is in the county list.
Florida, In figures
Florida in figures
What the published data says about Florida, in words. A zone and a share of tests describe an area, never the level in any one home.
Predicted
PredictedEPA places 9 of Florida's 67 counties in Zone 2 and 58 in Zone 3.
No Florida county is in Zone 1.
Compared
Calculated by Radon4110% of Florida'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 Florida 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 Broward County (1,934 in 2023), Collier County (1,743 in 2023) and Palm Beach County (1,730 in 2023).
Local record
Florida's radon program is the Florida’s Radon Program, run by Florida Department of Health; its contacts are under Local resources.
4 cities have a page setting the figures of the counties it lies in side by side: Naples, Gainesville, Venice and Tampa.
Florida, Counties
Florida counties by EPA zone
PredictedAll 67 counties, by the zone EPA predicts for each. Every county has its own report.
Zone 2: moderate predicted potential9
- Alachua County21.4% of reported tests at or above 4 pCi/L, 2023
- Citrus County33.3% of reported tests at or above 4 pCi/L, 2023
- Columbia CountyReported testing not yet available
- Hillsborough7.5% of reported tests at or above 4 pCi/L, 2023
- Leon County19.1% of reported tests at or above 4 pCi/L, 2023
- Marion County44.5% of reported tests at or above 4 pCi/L, 2023
- Miami-Dade County39.6% of reported tests at or above 4 pCi/L, 2023
- Polk County11.0% of reported tests at or above 4 pCi/L, 2023
- Union County100.0% of reported tests at or above 4 pCi/L, 2022
Zone 3: lower predicted potential58
- Baker CountyReported testing not yet available
- Bay CountyReported testing not yet available
- Bradford County0.0% of reported tests at or above 4 pCi/L, 2021
- Brevard CountyReported testing not yet available
- Broward County9.4% of reported tests at or above 4 pCi/L, 2023
- Calhoun CountyReported testing not yet available
- Charlotte County31.9% of reported tests at or above 4 pCi/L, 2023
- Clay CountyReported testing not yet available
- Collier County22.7% of reported tests at or above 4 pCi/L, 2023
- DeSoto CountyReported testing not yet available
- Dixie County0.0% of reported tests at or above 4 pCi/L, 2022
- Duval County6.2% of reported tests at or above 4 pCi/L, 2023
- Escambia CountyReported testing not yet available
- Flagler County100.0% of reported tests at or above 4 pCi/L, 2023
- Franklin County0.0% of reported tests at or above 4 pCi/L, 2022
- Gadsden County14.6% of reported tests at or above 4 pCi/L, 2023
- Gilchrist County0.0% of reported tests at or above 4 pCi/L, 2022
- Glades County0.0% of reported tests at or above 4 pCi/L, 2017
- Gulf CountyReported testing not yet available
- Hamilton County0.0% of reported tests at or above 4 pCi/L, 2021
- Hardee County0.0% of reported tests at or above 4 pCi/L, 2022
- Hendry CountyReported testing not yet available
- Hernando CountyReported testing not yet available
- Highlands County0.0% of reported tests at or above 4 pCi/L, 2022
- Holmes County0.0% of reported tests at or above 4 pCi/L, 2017
- Indian River County6.7% of reported tests at or above 4 pCi/L, 2023
- Jackson CountyReported testing not yet available
- Jefferson CountyReported testing not yet available
- Lafayette CountyReported testing not yet available
- Lake CountyReported testing not yet available
- Lee County20.3% of reported tests at or above 4 pCi/L, 2023
- Levy CountyReported testing not yet available
- Liberty County50.0% of reported tests at or above 4 pCi/L, 2020
- Madison County20.0% of reported tests at or above 4 pCi/L, 2023
- Manatee County11.0% of reported tests at or above 4 pCi/L, 2023
- Martin County24.1% of reported tests at or above 4 pCi/L, 2023
- Monroe County12.5% of reported tests at or above 4 pCi/L, 2023
- Nassau CountyReported testing not yet available
- Okaloosa CountyReported testing not yet available
- Okeechobee County0.0% of reported tests at or above 4 pCi/L, 2018
- Orange County9.5% of reported tests at or above 4 pCi/L, 2023
- Osceola County1.4% of reported tests at or above 4 pCi/L, 2023
- Palm Beach County40.1% of reported tests at or above 4 pCi/L, 2023
- Pasco County0.6% of reported tests at or above 4 pCi/L, 2023
- Pinellas County5.9% of reported tests at or above 4 pCi/L, 2023
- Putnam CountyReported testing not yet available
- Santa Rosa County2.2% of reported tests at or above 4 pCi/L, 2022
- Sarasota County12.3% of reported tests at or above 4 pCi/L, 2023
- Seminole County1.6% of reported tests at or above 4 pCi/L, 2023
- St. Johns CountyReported testing not yet available
- St. Lucie CountyReported testing not yet available
- Sumter CountyReported testing not yet available
- Suwannee County0.0% of reported tests at or above 4 pCi/L, 2022
- Taylor County0.0% of reported tests at or above 4 pCi/L, 2022
- Volusia County1.2% of reported tests at or above 4 pCi/L, 2023
- Wakulla County3.2% of reported tests at or above 4 pCi/L, 2023
- Walton County0.0% of reported tests at or above 4 pCi/L, 2021
- Washington CountyReported testing not yet available
Florida, Cities
Cities in Florida 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.
Florida, Local resources
Local resources in Florida
Who to ask in Florida: the state's radon program, test kits and professionals.
Florida’s Radon Program
Florida Department of Health
Florida’s radon program answers questions about testing, mitigation and the rules where you live.
- Phone
- 850-245-4288
- PHtoxicology@FLhealth.gov
- Licensing of radon professionals
Florida Statutes require the certification of businesses and individuals providing radon services or any other radon related activity.
Test kits
The program says: Protect your family by requesting a FREE radon test kit.
Radon professionals
5 professionals are listed in Florida.
Professionals in FloridaFlorida, Questions
Questions about radon in Florida
Common questions8 questions, answered from the figures above
Is radon a problem in Florida?
EPA's Map of Radon Zones places 0 of the 67 Florida counties it classifies in Zone 1, the highest predicted potential, 9 in Zone 2 and 58 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.
How do I get a radon test in Florida?
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 Florida 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 stateFlorida radon program
Who does radon mitigation in Florida?
Radon411's Florida directory lists 5 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 Florida
Which Florida counties have the highest radon?
67 of Florida'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 Florida are high?
CDC has published no statewide radon testing statistics for Florida, 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 Florida in?
Florida is in EPA Region 4: Southeast.
Do I need to test my home in Florida?
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 Florida?
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 Florida. 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.
Florida, Products
Testing and mitigation products
Whatever the figures for Florida 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.
Florida / 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.