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County radon report

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Locations and reports

Radon in Stamford, Connecticut

Stamford, Connecticut lies in Fairfield County, which EPA places in Zone 1, highest predicted potential. Radon data is published by county, so this page reads Fairfield County's figures.

ConnecticutAbout 139,535 people

What this means for you

  • Your area: EPA rates Fairfield County, where Stamford is, Zone 1, the highest 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 2,784 radon tests reported to CDC for Fairfield County (2019), 33.4% 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.

Stamford, What is published

What is published for Stamford

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

Fairfield County has an EPA zone and its own CDC test figures, shown below. About 139,535 people live in Stamford.

Stamford, Counties

The county Stamford lies in

Measured

Each county's own EPA zone and its own published CDC figures for 2019, 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.

Fairfield CountyZone 1Highest predicted potential

33.4%
Reported tests at or above 4 pCi/L, 2019
2.1 pCi/L
Median reported result
2,784 tests
Tests reported to CDC
6
Annual years on file

The median reported pre-mitigation result for 2019 was 2.1 pCi/L in Fairfield 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, 2019.

Stamford, Local resources

Local resources for Stamford

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

Radon Program

Department of Public Health

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

Phone
(860) 509-7300
Email
DPH.RadonReports@ct.gov
Licensing of radon professionals
The State of Connecticut does not license or otherwise certify radon professionals, however, the Radon Program maintains lists of nationally certified professionals...
Visit the program's page(opens in a new tab)

Test kits

The program says: A part of the partnership includes providing LHDs free short-term radon in air test kits for distribution to community residents.

Free and low-cost kitsCompare kits

Radon professionals

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

Professionals in Connecticut

Stamford, Questions

Questions about radon in Stamford

What radon zone is Stamford in?

EPA's Map of Radon Zones classifies counties, not cities. Fairfield County is in Zone 1 (highest 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 Stamford's counties?

For 2019, the share of radon tests reported to CDC that were at or above 4 pCi/L was 33.4% in Fairfield County (2,784 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 Stamford?

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 Fairfield County, the county Stamford lies in.

Stamford, Keep reading

Keep reading

Stamford / Next steps

What to do next