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Radon in Ithaca, New York

Ithaca, New York lies in Tompkins County, which EPA places in Zone 1, highest predicted potential. Radon data is published by county, so this page reads Tompkins County's figures.

New YorkAbout 33,632 people

What this means for you

  • Your area: EPA rates Tompkins County, where Ithaca 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 18 radon tests reported to CDC for Tompkins County (2023), 38.9% 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.

Ithaca, What is published

What is published for Ithaca

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

Tompkins County has an EPA zone and its own CDC test figures, shown below. About 33,632 people live in Ithaca.

Ithaca, Counties

The county Ithaca 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.

Tompkins CountyZone 1Highest predicted potential

38.9%
Reported tests at or above 4 pCi/L, 2023
3.3 pCi/L
Median reported result
18 tests
Tests reported to CDC
10
Annual years on file

The median reported pre-mitigation result for 2023 was 3.3 pCi/L in Tompkins 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, 2023.

Ithaca, Local resources

Local resources for Ithaca

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

Radon Program

New York State Department of Health

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

Phone
518-402-7556
Email
radon@health.ny.gov
Licensing of radon professionals
NYS does not certify or license radon testers.
Visit the program's page(opens in a new tab)

Test kits

The program says: Providing patients with information about how low-cost test kits may be obtained from the Radon Program.

Free and low-cost kitsCompare kits

Radon professionals

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

Professionals in New York

Ithaca, Questions

Questions about radon in Ithaca

What radon zone is Ithaca in?

EPA's Map of Radon Zones classifies counties, not cities. Tompkins 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 Ithaca's counties?

For 2023, the share of radon tests reported to CDC that were at or above 4 pCi/L was 38.9% in Tompkins County (18 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 Ithaca?

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 Tompkins County, the county Ithaca lies in.

Ithaca, Keep reading

Keep reading

Ithaca / Next steps

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