Available Radon Information

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

State Radon Officer

Natalia Deardorff
(800) 745-7236
(916) 716-3679
Radon Program(Indoor Radon)
PO Box 997377
Sacramento CA, 95899

About Radon Levels in California

Additional information about radon levels in California may be available through the California Indoor Radon Program Website.