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
Free Radon Test Kits for California Residents
January is National Radon Action Month, and the cold winter months are the best time to test your home for radon. The California Indoor Radon Program is offering free test kits to households in California throughout the month of January, or until supplies run out. The kits are provided by the U.S. Environmental Protection Agency's State Indoor Radon Grant fund, and are limited to one free test kit per household. Kits will arrive within 2-4 weeks of ordering. Additional test kits can be purchased through the our partner laboratory's website for $8.45.
or call our partner laboratory, Alpha Energy, toll free at 1-800-324-5928 and choose Option 6 to order via telephone.
También puede pedir un juego de la prueba en español.
Visit our Testing Information Page to learn how to use our test kits and how to interpret test results.
Any contact information you provide when ordering will be used solely to deliver your test kit and test results, and will not be retained by the program.
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. Downloadable GIS
data for each study area can now be downloaded through the interactive
Contact the radon program at firstname.lastname@example.org
(email) or 1-800-745-7236 (telephone).