Free Minnesota radon tools, from public MDH data
The most radioactive thing in your house is probably the basement air.
35.9% of Minnesota homes tested come back at or above the radon action level. See your county's numbers, get a plain verdict on whether you're due for a test, and verify any pro's license before you pay them. Lookups are anonymous and never stored.
County radon lookup
Enter an address or pick any of 87counties: the share of local tests at or above 4 pCi/L, the median result, and what it means, from MDH's published data.
Should I test? checkup
Five questions about your home, one plain verdict: test now, test soon, or you're current. Runs in your browser; nothing you answer is stored.
Licensed pro directory
Minnesota licenses radon measurement and mitigation work. Every MDH licensee, searchable, refreshed weekly, so you can verify before you hire.
Why trust this?The numbers come from the Minnesota Department of Health's public radon data, republished with the date we last checked them; when our copy and MDH's page disagree, MDH's page controls. The site is built by a named Minnesota attorney (meet Dan), not an anonymous lead farm, and your lookups are never stored.
Frequently asked questions
- Is anything I look up on this site saved?
- No. The county lookup discards your address the moment it finds the county, and the should-I-test checkup runs entirely in your browser. Your address, county search, and answers are never stored. The only information this site ever keeps is what you type into a quote or reminder form and submit yourself.
- What is radon and why does Minnesota care?
- Radon is a naturally occurring radioactive gas you cannot see or smell. It seeps from the soil into homes and is the second leading cause of lung cancer after smoking. Minnesota's geology gives it some of the highest indoor radon levels in the country: about 2 in 5 homes tested here come back at or above the 4 pCi/L action level where the state recommends fixing the home.
- Who built this site?
- Daniel C. Swenson, a Minnesota attorney at Robert Wilson & Associates in Minneapolis. It is an independent educational resource, not a government agency or health authority, and nothing on it is medical or legal advice about your situation.
- What does it cost?
- Nothing, ever, for homeowners. If you request mitigation quotes, participating licensed professionals may pay to receive inquiries; that never changes what the data shows you.