State Radon Officer

Justin Otto
(800) 227-8917
(701) 328-5188
ND Dept. of Health
918 East Divide Ave
Bismarck ND, 58501-1947

About Radon Levels
in McHenry County

The average national indoor radon level is 1.3 pCi/L. (What is a picocurie?)
The average indoor radon levels of McHenry County, as determined by radon test results from Air Chek, Inc, is 5.3 pCi/L

Radon Risk chart for McHenry County

   Results under 2 pCi/L

   Results between 2 and 3.9 pCi/L

   Results 4 pCi/L and above

Additional information about radon levels in McHenry County may be available through this website

Radon Resources

County Health Department