State Radon Officer

Barbara Regynski
(800) 438-3367
(605) 773-3151
Dept. of Environment & Natural Resources
523 E. Capitol, Room 217
Pierre SD, 57501

About Radon Levels
in Charles Mix County

The average national indoor radon level is 1.3 pCi/L. (What is a picocurie?)
The average indoor radon levels of Charles Mix County, as determined by radon test results from Air Chek, Inc, is 9.5 pCi/L

Radon Risk chart for Charles Mix 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 Charles Mix County may be available through this website