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RADON411
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County radon report

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Locations and reports

Radon in Tampa, Florida

Tampa, Florida lies in Hillsborough, which EPA places in Zone 2, moderate predicted potential. Radon data is published by county, so this page reads Hillsborough's figures.

FloridaAbout 413,554 people

What this means for you

  • Your area: EPA rates Hillsborough, where Tampa is, Zone 2, the middle of its three radon zones. That is a prediction for the whole county, and homes with elevated levels occur in all three zones.
  • Local tests: Of 984 radon tests reported to CDC for Hillsborough (2023), 7.5% were at or above 4 pCi/L, EPA's action level.
  • Your home: The only way to know your home’s level is to test it.
How to testFind a certified tester

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.

Tampa, What is published

What is published for Tampa

Information:

Radon data is published by county, not by city

Radon data is published by county, not by city. EPA assigns radon zones to counties, and CDC publishes radon test figures by county. Neither publishes a figure for Tampa, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.

Hillsborough has an EPA zone and its own CDC test figures, shown below. About 413,554 people live in Tampa.

Tampa, Counties

The county Tampa lies in

Measured

Each county's own EPA zone and its own published CDC figures for 2023, the newest period any of them has. A county without a figure for that period is shown without one, never with a figure from another year.

HillsboroughZone 2Moderate predicted potential

7.5%
Reported tests at or above 4 pCi/L, 2023
0.9 pCi/L
Median reported result
984 tests
Tests reported to CDC
10
Annual years on file

The median reported pre-mitigation result for 2023 was 0.9 pCi/L in Hillsborough.

CDC counts radon tests that were reported to it, not homes, and figures from few tests can swing widely from year to year. Each county’s report has its full history.

Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.

Tampa, Local resources

Local resources for Tampa

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
Email
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.
Visit the program's page(opens in a new tab)

Test kits

The program says: Protect your family by requesting a FREE radon test kit.

Free and low-cost kitsCompare kits

Radon professionals

Radon testers and mitigators in Florida, each with how its listing was checked.

Professionals in Florida

Tampa, Questions

Questions about radon in Tampa

What radon zone is Tampa in?

EPA's Map of Radon Zones classifies counties, not cities. Hillsborough is in Zone 2 (moderate predicted potential). A zone is a prediction for a whole county and never tells you the level in one home.

How many radon tests come back high in Tampa's counties?

For 2023, the share of radon tests reported to CDC that were at or above 4 pCi/L was 7.5% in Hillsborough (984 tests). Each is that county's own figure, counting tests reported to CDC, not homes. Radon411 does not average or combine them into a figure for the city.

Should I test my home in Tampa?

Yes. 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. How to test a home.

The answers use the published figures of Hillsborough, the county Tampa lies in.

Tampa, Keep reading

Keep reading

Tampa / Next steps

What to do next