Skip to content
RADON411
$5

County radon report

Get it

Locations and reports

Radon in Greensboro, North Carolina

Greensboro, North Carolina lies in Guilford County, which EPA places in Zone 3, lower predicted potential. Radon data is published by county, so this page reads Guilford County's figures.

North CarolinaAbout 308,667 people

What this means for you

  • Your area: EPA rates Guilford County, where Greensboro is, Zone 3, the lowest 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 13 radon tests reported to CDC for Guilford County (2022), 15.4% 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.

Greensboro, What is published

What is published for Greensboro

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

Guilford County has an EPA zone and its own CDC test figures, shown below. About 308,667 people live in Greensboro.

Greensboro, Counties

The county Greensboro lies in

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.

Guilford CountyZone 3Lower predicted potential

15.4%
Reported tests at or above 4 pCi/L, 2022
1.0 pCi/L
Median reported result
13 tests
Tests reported to CDC
4
Annual years on file

The median reported pre-mitigation result for 2022 was 1.0 pCi/L in Guilford 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.

Greensboro, Local resources

Local resources for Greensboro

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

Greensboro, Questions

Questions about radon in Greensboro

What radon zone is Greensboro in?

EPA's Map of Radon Zones classifies counties, not cities. Guilford County is in Zone 3 (lower 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 Greensboro's counties?

For 2022, the share of radon tests reported to CDC that were at or above 4 pCi/L was 15.4% in Guilford County (13 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 Greensboro?

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 Guilford County, the county Greensboro lies in.

Greensboro, Keep reading

Keep reading

Greensboro / Next steps

What to do next