Radon is a hidden danger lurking beneath the surface of millions of homes, silently threatening the health of those inside. As this radioactive gas releases from soil, rock, and water, it can infiltrate buildings through cracks and joints in foundations. Because it cannot be seen, smelled, or tasted, many people are unaware of its presence until they receive a stage three or four lung cancer diagnosis.
Prolonged exposure to high levels of radon is the leading cause of lung cancer in non-smokers, claiming 21,000 lives each year. This invisible hazard demands greater public attention, routine testing, and decisive action to prevent avoidable tragedy.
How radon is measured and when you should be concerned
Radon is measured in picocuries per liter of air (pCi/L), and while there is technically no “safe” level of radon, there are levels where it is more important to take action than others. The World Health Organization (WHO) recommends mitigation at 2.7 pCi/L, whereas the Environmental Protection Agency (EPA) recommends mitigation at 4.0 pCi/L. However, if your home tests at 2.0 pCi/L or higher, you should consult your local radon mitigation specialist to determine if you should get a system installed for your unique circumstances.
Radon in Northern versus Southern Utah
Of the top 15 counties in Utah with high radon levels, only two are in Southern Utah (Washington County and Iron County). However, that doesn’t mean southerners should let their guard down. One in three Utah homes has a high radon level, and a house might have a low level while the next one has a high level. The only way to know if you’re in the clear is to test your home.
According to the Utah Geologic Survey, soil from Pine Valley Mountain shale and granite has the greatest potential for high radon levels. This type of soil is commonly found south of St. George.
Energy efficiency and indoor radon levels
There are many factors that can impact whether a home has more or less radon indoors. One factor that often impacts those in Southern Utah is energy efficiency. When a home is more energy efficient, seals on doors and windows are tighter, which means less air escapes outside. While this is great for heating and cooling, it also means that radon and other gases in indoor air are less able to escape and can concentrate to dangerous levels.
Many cities have, or have had, incentives for residents to make their homes energy-efficient (including cities like St. George!). If you live in an energy-efficient home, you should be especially cautious about your indoor radon level.
How often Utahns should test their homes for radon
It is recommended to test for radon every two years, alternating between winter and summer. You can click here to request a free radon test. If your home tests high, we can walk you through the mitigation process to protect the health of you and your loved ones.
