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Radon in Raleigh, North Carolina

Raleigh, North Carolina spans 2 counties, Durham County and Wake County. Radon data is published by county, so this page sets their figures side by side.

North CarolinaAbout 506,306 people

What this means for you

  • Your area: Raleigh lies in 2 counties. EPA rates Durham County Zone 3 and Wake County Zone 2, where Zone 1 is 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: For 2022, the share of radon tests reported to CDC that were at or above 4 pCi/L was 0.0% in Durham County (10 tests) and 2.3% in Wake County (88 tests). EPA's action level is 4 pCi/L.
  • 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.

Raleigh, What is published

What is published for Raleigh

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 Raleigh, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.

Each county has its own CDC test figures, shown below side by side. About 506,306 people live in Raleigh.

Raleigh, Counties

Raleigh's counties, side by side

Measured

Each county's own EPA zone and its own published CDC figures for 2022, 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.

  • Durham County
    EPA zone
    Zone 3: Lower predicted potential
    At or above 4 pCi/L
    0.0%
    Median result
    0.1 pCi/L
    Tests reported
    10 tests
    Annual years on file
    4
  • Wake County
    EPA zone
    Zone 2: Moderate predicted potential
    At or above 4 pCi/L
    2.3%
    Median result
    0.1 pCi/L
    Tests reported
    88 tests
    Annual years on file
    4
The counties Raleigh lies in, each with its own EPA zone and its own published CDC figures for 2022
CountyEPA zoneReported tests at or above 4 pCi/LMedian reported resultTests reportedAnnual years on file
Durham CountyZone 3: Lower predicted potential0.0%0.1 pCi/L10 tests4
Wake CountyZone 2: Moderate predicted potential2.3%0.1 pCi/L88 tests4

The median reported pre-mitigation result for 2022 was 0.1 pCi/L in Durham County and 0.1 pCi/L in Wake County.

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, 2022.

Raleigh, Local resources

Local resources for Raleigh

Who to ask in North Carolina: the state's radon program, test kits and professionals.

North Carolina Radon Program

NCDHHS

North Carolina’s radon program answers questions about testing, mitigation and the rules where you live.

Licensing of radon professionals
The North Carolina Radon Program is presently developing a Radon Proficiency Program as directed by Session Law 2023-91 House Bill 782 .
Visit the program's page(opens in a new tab)

Test kits

Ask the program whether it has free or discounted kits, or compare kits you can buy.

Free and low-cost kitsCompare kits

Radon professionals

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

Professionals in North Carolina

Raleigh, Questions

Questions about radon in Raleigh

What radon zone is Raleigh in?

EPA's Map of Radon Zones classifies counties, not cities. Wake County is in Zone 2 (moderate predicted potential); Durham County is in Zone 3 (lower predicted potential). The counties Raleigh lies in do not share one zone, so no single zone is given for Raleigh. 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 Raleigh's counties?

For 2022, the share of radon tests reported to CDC that were at or above 4 pCi/L was 0.0% in Durham County (10 tests) and 2.3% in Wake County (88 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 Raleigh?

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 Durham County and Wake County, the counties Raleigh lies in.

Raleigh, Keep reading

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Raleigh / Next steps

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