Marquette County has verified elevated radon levels in homes in various locations. Radon is known to be the second leading cause of lung cancer in U.S. citizens. The only way to know if your home is radon free is to test for radon.
Testing should be conducted in the lowest livable level of your home, in a closed house environment at a time of year when the house is being heated.
The Marquette County Health Department sells both Short Term activated charcoal and Long Term alpha-track radon test kits to test your home. Cost of test kits is $12. You must come to the Marquette County Health Department at 184 U.S. 41 East to purchase.
For more detailed information regarding radon, go to the MDEQ Radon page at this LINK.