Radon Information for Wisconsin

About 1 out of 10 homes in Wisconsin has high radon levels

Radon is a naturally occurring gas that is radioactive and can cause lung cancer. Radon can leak into your home and is common in Wisconsin. While you can't see or smell it, you can protect yourself from it. Testing for radon is common when buying or selling a home, but you should take action now by testing your home.


Contact a Radon Information Center to get a test kit for around $20; certified measurement professionals are also available.


If your radon levels are high, a contractor can fix it. Check out the certified contractor listings.


Radon is the second leading cause of lung cancer in the United States.

Interactive Radon map for Wisconsin


View our interactive map of radon test results to see where radon levels are the highest.


Where does radon come from?

Radon is naturally occurring from the ground, and although you cannot see it or smell it, it can be present in your home.

New resources

Experts are available statewide to answer your questions and provide test kits to the general public.

Have questions or need help? Get in touch with a radon expert by calling
1-888-LOW-RADON (1-888-569-7236).



Last Revised: February 12, 2018