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County radon report

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Radon in Fargo, North Dakota

Fargo, North Dakota lies in Cass County, which EPA places in Zone 1, highest predicted potential. Radon data is published by county, so this page reads Cass County's figures.

North DakotaAbout 136,275 people

What this means for you

  • Your area: EPA rates Cass County, where Fargo 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 862 radon tests reported to CDC for Cass County (2008 to 2017, laboratory), 57.5% 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.

Fargo, What is published

What is published for Fargo

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

Cass County has an EPA zone and its own CDC test figures, shown below. About 136,275 people live in Fargo.

Fargo, Counties

The county Fargo lies in

Measured

Each county's own EPA zone and its own published CDC figures for 2008 to 2017, laboratory, 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.

Cass CountyZone 1Highest predicted potential

57.5%
Reported tests at or above 4 pCi/L, 2008 to 2017, laboratory
4.7 pCi/L
Median reported result
862 tests
Tests reported to CDC
0
Annual years on file

The median reported pre-mitigation result for 2008 to 2017, laboratory was 4.7 pCi/L in Cass 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, 2008 to 2017, laboratory.

Fargo, Local resources

Local resources for Fargo

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

North Dakota's radon program

North Dakota Department of Environmental Quality

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

Phone
701-328-5166
Email
jOtto@nd.gov
Visit the program's page(opens in a new tab)

Test kits

The program says: Notice: The DEQ is out of free radon test kits.

Free and low-cost kitsCompare kits

Radon professionals

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

Professionals in North Dakota

Fargo, Questions

Questions about radon in Fargo

What radon zone is Fargo in?

EPA's Map of Radon Zones classifies counties, not cities. Cass 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 Fargo's counties?

For 2008 to 2017, laboratory, the share of radon tests reported to CDC that were at or above 4 pCi/L was 57.5% in Cass County (862 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 Fargo?

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 Cass County, the county Fargo lies in.

Fargo, Keep reading

Keep reading

Fargo / Next steps

What to do next