State Radon Officer

Mike Brennan
(360) 236-3253
Radon Outreach Program
PO BOX 47827
Olympia WA, 98504-7825

About Radon Levels
in Clark County

The average national indoor radon level is 1.3 pCi/L. (What is a picocurie?)
The average indoor radon levels of Clark County, as determined by radon test results from Air Chek, Inc, is 2.9 pCi/L

Radon Risk chart for Clark 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 Clark County may be available through this website