A row of brick houses with covered front porches

North Dakota radon directory

Radon Professionals in North Dakota

Find radon testing and mitigation companies near you. Search by your county or your city and town below, or enter a ZIP code to go straight to your area.

Counties on the map are shaded by EPA radon zone and every dot is a town with its own page. Select a county to see everything inside it, or a dot to go straight to the town.

Find radon pros in your area

Enter your ZIP code and we will take you straight to your town.

Or answer a few questions and have North Dakota radon pros reach out to you. Takes about 30 seconds, free and no obligation.

Browse By County

Zone 1, highestZone 2, moderateZone 3, lowerA town with a pageSelect a county or a town

Radon In North Dakota

Radon levels vary by geology, not by city limits, so two houses on the same street can read differently. The only way to know a home’s level is to test it. The map shows EPA radon zones across North Dakota, which predict what is likely rather than what any individual house will measure.

Every one of the 53 counties in North Dakota on this map is in EPA Zone 1, the highest of the three predicted levels.

Zone 1, highest: 53

Zones predict what is likely across a county. They say nothing about one house, and homes in every zone test high.

North Dakota runs its own radon program, and it is worth a call before you spend anything: several states hand out discounted or free test kits, and the office can tell you what the rules are where you live.

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