Available Radon Information

Within this site you will find information about radon levels of every Washington county. This includes radon level maps and radon level graphs specific to Washington.

State Radon Officer

Mike Brennan
(360) 236-3253
Division of Radiation Protection
PO BOX 47827
Olympia WA, 98504-7825

About Radon Levels in Washington

Additional information about radon levels in Washington may be available through the Washington State Radon Website.