Locations and reports
Radon Levels in North Dakota
What this means for you
- Your area: EPA rates 53 of North Dakota's 53 classified counties Zone 1, 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: CDC publishes North Dakota's radon test results by county. Open your county below to see its figures.
- Your home: The only way to know your home’s level is to test it.
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.
For North Dakota, EPA's Map of Radon Zones places 53 of its 53 classified counties in Zone 1, highest predicted potential, a prediction for each county as a whole. Radon levels vary from home to home, so only a test measures the level in yours.
Predicted: EPA radon zone
53 of 53 counties classified
EPA classifies counties, not states. Of the 53 counties in North Dakota with a zone, 53 are in Zone 1.
- Zone 1: Highest predicted potentialgreater than 4 pCi/L53 of 53 counties · 100.0%
An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.
This is a county-level geologic prediction. It is not a measurement of any address, and houses with elevated radon are found in all three zones.
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC publishes North Dakota's radon test figures by county: 53 of its 53 counties have one. Each county's share is in the county list.
North Dakota, In figures
North Dakota in figures
What the published data says about North Dakota, in words. A zone and a share of tests describe an area, never the level in any one home.
Predicted
PredictedEPA places 53 of North Dakota's 53 counties in Zone 1.
Zone 1 counties, A to Z, begin with Adams County, Barnes County and Benson County; the county section below lists all 53.
Compared
Calculated by Radon411100% of North Dakota's counties with a zone on file are in Zone 1, a larger share than across all U.S. counties (34%). It is a share of counties, not of land, people or homes.
Reported tests
MeasuredCDC has no statewide testing figure for North Dakota on file here.
53 of the 53 counties have a published county figure; the most tests in each one's latest year were reported for Burleigh County (1,255 in 2017), Cass County (725 in 2017) and Grand Forks County (522 in 2017).
Local record
North Dakota's radon program and its page are under Local resources.
2 cities have a page setting the figures of the counties it lies in side by side: Fargo and Bismarck.
North Dakota, Counties
North Dakota counties by EPA zone
PredictedAll 53 counties, by the zone EPA predicts for each. Every county has its own report.
Zone 1: highest predicted potential53
- Adams County80.0% of reported tests at or above 4 pCi/L, 2017
- Barnes County67.5% of reported tests at or above 4 pCi/L, 2017
- Benson County77.4% of reported tests at or above 4 pCi/L, 2017
- Billings County85.0% of reported tests at or above 4 pCi/L, 2017
- Bottineau County64.0% of reported tests at or above 4 pCi/L, 2017
- Bowman County71.4% of reported tests at or above 4 pCi/L, 2017
- Burke County63.6% of reported tests at or above 4 pCi/L, 2017
- Burleigh County51.1% of reported tests at or above 4 pCi/L, 2017
- Cass County57.5% of reported tests at or above 4 pCi/L, 2017
- Cavalier County50.0% of reported tests at or above 4 pCi/L, 2017
- Dickey County67.1% of reported tests at or above 4 pCi/L, 2017
- Divide County50.0% of reported tests at or above 4 pCi/L, 2017
- Dunn County74.3% of reported tests at or above 4 pCi/L, 2017
- Eddy County12.5% of reported tests at or above 4 pCi/L, 2017
- Emmons County86.2% of reported tests at or above 4 pCi/L, 2017
- Foster County61.3% of reported tests at or above 4 pCi/L, 2017
- Golden Valley County71.4% of reported tests at or above 4 pCi/L, 2017
- Grand Forks County75.9% of reported tests at or above 4 pCi/L, 2017
- Grant County73.9% of reported tests at or above 4 pCi/L, 2017
- Griggs County54.5% of reported tests at or above 4 pCi/L, 2017
- Hettinger County62.5% of reported tests at or above 4 pCi/L, 2017
- Kidder County79.3% of reported tests at or above 4 pCi/L, 2017
- LaMoure County70.5% of reported tests at or above 4 pCi/L, 2017
- Logan County50.0% of reported tests at or above 4 pCi/L, 2017
- McHenry County64.3% of reported tests at or above 4 pCi/L, 2017
- McIntosh County71.9% of reported tests at or above 4 pCi/L, 2017
- McKenzie County56.1% of reported tests at or above 4 pCi/L, 2017
- McLean County63.2% of reported tests at or above 4 pCi/L, 2017
- Mercer County63.5% of reported tests at or above 4 pCi/L, 2017
- Morton County53.4% of reported tests at or above 4 pCi/L, 2017
- Mountrail County66.7% of reported tests at or above 4 pCi/L, 2017
- Nelson County63.2% of reported tests at or above 4 pCi/L, 2017
- Oliver County66.7% of reported tests at or above 4 pCi/L, 2017
- Pembina County82.5% of reported tests at or above 4 pCi/L, 2017
- Pierce County48.7% of reported tests at or above 4 pCi/L, 2017
- Ramsey County76.9% of reported tests at or above 4 pCi/L, 2017
- Ransom County61.6% of reported tests at or above 4 pCi/L, 2017
- Renville County72.7% of reported tests at or above 4 pCi/L, 2017
- Richland County43.0% of reported tests at or above 4 pCi/L, 2017
- Rolette County46.2% of reported tests at or above 4 pCi/L, 2017
- Sargent County75.0% of reported tests at or above 4 pCi/L, 2017
- Sheridan County54.5% of reported tests at or above 4 pCi/L, 2017
- Sioux County100.0% of reported tests at or above 4 pCi/L, 2017
- Slope County70.0% of reported tests at or above 4 pCi/L, 2017
- Stark County62.4% of reported tests at or above 4 pCi/L, 2017
- Steele County0.0% of reported tests at or above 4 pCi/L, 2017
- Stutsman County73.5% of reported tests at or above 4 pCi/L, 2017
- Towner County56.0% of reported tests at or above 4 pCi/L, 2017
- Traill County51.4% of reported tests at or above 4 pCi/L, 2017
- Walsh County79.5% of reported tests at or above 4 pCi/L, 2017
- Ward County43.0% of reported tests at or above 4 pCi/L, 2017
- Wells County48.1% of reported tests at or above 4 pCi/L, 2017
- Williams County33.8% of reported tests at or above 4 pCi/L, 2017
North Dakota, Cities
Cities in North Dakota with their own page
Radon data is published by county, not by city. Each city page sets the figures of the counties the city lies in side by side.
North Dakota, Local resources
Local resources in North Dakota
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
- jOtto@nd.gov
Test kits
The program says: Notice: The DEQ is out of free radon test kits.
Radon professionals
No professionals are listed in North Dakota yet. The state program can point you to registered testers and mitigators.
See the North Dakota directoryNorth Dakota, Questions
Questions about radon in North Dakota
Common questions9 questions, answered from the figures above
Is radon a problem in North Dakota?
EPA's Map of Radon Zones places 53 of the 53 North Dakota counties it classifies in Zone 1, the highest predicted potential, 0 in Zone 2 and 0 in Zone 3. An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.
Which North Dakota counties are in EPA radon Zone 1?
53 counties are in Zone 1: Adams County, Barnes County, Benson County, Billings County, Bottineau County, Bowman County, Burke County, Burleigh County, and 45 more in the county table on this page. Zone 1 is EPA's class for highest predicted potential, a predicted average indoor screening level greater than 4 pCi/L. A zone is a prediction for a county, not a measurement of any home.
Radon in Adams CountyRadon in Barnes CountyRadon in Benson County
How do I get a radon test in North Dakota?
EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. The North Dakota radon program is the place to ask about certified testers and any test kit offer it runs.
How to test a homeFree and low-cost kits by stateNorth Dakota radon program
Who does radon mitigation in North Dakota?
Radon411 has no certified mitigators listed for North Dakota yet. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional.
How radon mitigation worksWhat mitigation costsRadon professionals in North Dakota
Which North Dakota counties have the highest radon?
53 of North Dakota's 53 counties have an EPA radon zone published here. Radon411 will not rank counties on data it does not hold, and a zone is a prediction for an area rather than a measurement of any building.
What share of radon tests in North Dakota are high?
CDC has published no statewide radon testing statistics for North Dakota, so we cannot give a figure. Where CDC does publish one, the percentage describes radon tests reported to CDC, not homes.
Which EPA region is North Dakota in?
North Dakota is in EPA Region 8: Mountains and Plains.
Do I need to test my home in North Dakota?
Yes, wherever you live in the state. 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.
Why does this page show coverage rather than one radon level for North Dakota?
A statewide figure averages counties with very different geology and very different numbers of reported tests, so it hides more than it shows. The county report is the level at which the EPA zone, the geologic potential and the reported testing statistics are actually published, which is why the county table above links to every one of them.
What these figures mean if you own, buy, sell or rent
The zone counts on this page describe counties across North Dakota. They are predictions for areas, and none of them measures your building.
- How to test a home
If you own your home
Test the lowest lived-in level; a short-term kit screens in days, a long-term kit reflects the year.
- Buying a house: radon guide
If you are buying
Ask for past results and any system's post-mitigation test, and test during the sale.
- Selling a house: radon guide
If you are selling
Testing before you list puts the timing in your hands; disclosure rules differ by state.
- Radon in rental homes
If you rent, or rent out a home
A tenant can test; a fix is the owner's to make, and duties differ by state.
How long a test has to run, under what conditions, and what EPA says a result means: the testing standard, in full.
North Dakota, Products
Testing and mitigation products
Whatever the figures for North Dakota show, only a test tells you about one home.
Testing
- Short-term test kitsPassive detectors exposed for a few days under closed-building conditions, then analyzed by a lab.
- Long-term test kitsDetectors exposed for more than 90 days, for a closer picture of the annual average.
- Continuous monitorsPowered devices that log radon on a repeating cycle, often used for transaction tests.
- Digital detectorsConsumer devices that display a running radon reading without a lab.
- Water radon testsKits for radon dissolved in well water, analyzed by a lab.
Mitigation
- Mitigation fansThe inline fan that keeps a soil depressurization system running, sized by the installer.
- System indicatorsU-tube manometers and fan alarms that show whether a mitigation system is still working.
- Sealing materialsCrack, joint and sump sealing used alongside a mitigation system, not instead of one.
North Dakota / Next steps
What to do next
Learn
Know what radon is
What radon is, how it gets indoors, and why a county zone is not a reading for your home.
Learn about radonTest
Test the building you live in
Short-term or long-term, where the device goes, and closed-house conditions.
How to testFix
Bring a high level down
How a mitigation system works, and the retest that confirms it.
How mitigation worksFind a pro
Hire a certified professional
Measurement and mitigation professionals by state, with their certifications.
Find a professional
Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.