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Indoor Radon Program 

The Indoor Radon Program, within the Environmental Management Branch, seeks to reduce the health risk from radon exposure by increasing awareness, identifying areas of high radon potential, and encouraging all Californians to test their homes for radon, fix their homes if they have a radon problem, and build new homes radon-resistant. Test. Fix. Save a Life.  

Radon News

Special Report 238 - Radon Potential in Western Tulare County, California.

The California Geological Survey has released the latest radon screening survey and map. The new map shows radon potential for the Western Tulare County region.  Click here to view all maps and reports.

Interactive California Radon Potential Map

The California Geological Survey has released an interactive web map providing radon potential information for areas of California with completed radon potential maps. Click here to go to the map. Downloadable GIS data for each study area can now be downloaded through the interactive map.

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