State Radon Officer

Randy Maley
(866) 628-9891
(573) 751-6102
Missouri Department of Health and Senior Services
PO Box 570
Jefferson City MO, 65102

About Radon Levels
in Saint Louis County

The average national indoor radon level is 1.3 pCi/L. (What is a picocurie?)
The average indoor radon levels of Saint Louis County, as determined by radon test results from Air Chek, Inc, is 4 pCi/L

Radon Risk chart for Saint Louis 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 Saint Louis County may be available through this website