Radon is a naturally occurring radioactive gas produced by the breakdown of uranium found in soil, rock, and water. It is colorless, odorless, and tasteless, making it impossible to detect without proper testing.

Radon is present outdoors in trace amounts and typically disperses harmlessly into the air. However, when radon enters homes, schools, and workplaces, it can become trapped indoors and build up to dangerous levels. Radon commonly enters buildings through cracks in foundations, gaps around pipes, sump pits, crawlspaces, and other openings.

Indoor radon levels can be effectively controlled and managed using proven, cost-effective mitigation techniques.

Long-term exposure to radon gas increases the risk of lung cancer. According to the U.S. Environmental Protection Agency (EPA) and the U.S. Surgeon General, radon is the second leading cause of lung cancer in the United States, second only to smoking.

The EPA estimates that approximately 21,000 lung cancer deaths each year in the U.S. are linked to radon exposure. The risk is significantly higher for smokers, but non-smokers are also at risk.

Radon Is a Cancer-Causing Gas

Radon is a radioactive gas that can cause lung cancer. Because it cannot be seen, smelled, or tasted, many homeowners are unaware of elevated radon levels in their homes.

Testing Is the Only Way to Know

The only way to determine your home’s radon level is through professional radon testing. The EPA and Surgeon General recommend testing all homes below the third floor, regardless of age, location, or construction type.

Radon Problems Can Be Fixed

If elevated radon levels are found, they can be reduced. Even very high radon concentrations can be lowered to acceptable EPA levels with proper mitigation.

If you are buying a home, the EPA recommends testing the property for radon as part of the due diligence process. Testing should be performed by a certified or state-licensed radon professional.

If elevated radon levels are discovered, mitigation is recommended. In most cases, Williams Inspection & Radon Services can design and install an effective radon mitigation system at a reasonable cost using EPA-approved reduction methods.

The EPA, U.S. Surgeon General, and the Centers for Disease Control and Prevention (CDC) all agree that continued exposure to elevated radon levels increases the risk of lung cancer.

Their guidance is clear:

• All homes should be tested for radon
• Homes with radon levels 4.0 pCi/L or higher should be fixed

Radon enters homes primarily due to pressure differences between the air inside the home and the soil surrounding the foundation. Because indoor air pressure is typically lower, the home acts like a vacuum, pulling radon gas inside.

Common entry points include:

• Cracks in concrete slabs
• Foundation walls
• Crawlspaces
• Sump pits
• Gaps around plumbing and utility penetrations