• Radon is the second leading cause of lung cancer behind smoking.
  • Some 21,000 people will die this year due to breathing radon without even knowing it.
  • The radon threat is preventable with some simple steps.
  • The U.S. Surgeon General and EPA recommend that all homes be tested.
  • Fix your home if your radon level is 4 picoCuries per liter (pCi/L) or higher.
  • The World Health Organization’s action level is 2.7 pCi/L so you may want to consider mitigation even if the indoor level is between 2 & 4 pCi/L.

In this section, you will learn about basic information about what is radon, including the health effects, how radon enters the body, sources of radon in the home as well as where to test. Testing for radon as part of a real estate transaction is now common practice. There is also discussion about different types of test methods, how to test, interpreting test results and what to do if radon levels are high.