Indoor Radon Danger In the State of California

The California Indoor Radon Program seeks to reduce the health risk from radon exposures by increasing awareness, providing information about testing, identifying areas of high radon potential, and promoting mitigation and radon-resistant construction.

What is radon?

Radon is a naturally occurring radioactive gas that is odorless, invisible, and without taste.  It is released during the natural decay of uranium, which is present in most rock, soil and water. Its occurrence in the state is influenced primarily by geology; find out more about radon.

Where is radon found?

Radon can be found throughout California because uranium exists in all rock and soil.  Although certain areas of the state are more likely to contain higher radon levels than others, radon is a house-to-house issue.  You may live in an area of low radon potential yet your house can have elevated radon but your neighbor’s house has a low radon level. Radon, in its natural state cannot be detected with the human senses.

The only way to detect radon is to test.

The results of the test should determine if you and your family are at risk. Testing for real estate transactions must be conducted by a California certified radon tester.  If the tester is not on the service providers list, he or she may not be certified or registered with the Indoor Radon Program.

How does radon enter into my house and what can I do?

As the radon gas rises up from under the ground the gas enters  through cracks, seams and other openings in your home foundation.  If you have elevated radon levels you can still fix your home.  The California Department of Public Health (CDPH) along with U.S. Environmental Protection Agency (US EPA) recommends that you fix your house if it has 4 picocuries per liter (4 pCi/L) or higher.  If you are building a house in an area of moderate or high radon potential, we recommend using radon-resistant building techniques.

Why do I need to be concerned about radon?

Radon is the second leading cause of lung cancer following smoking.  US EPA estimates that nationally 21,000 lung cancer deaths are caused by radon each year.
Be sure to ask Kurt about radon testing along with your home inspection.