Michigan’s elevated radon levels aren’t random—they’re a result of the state’s unique geology and home construction practices. Throughout Michigan, particularly in counties like Oakland, Washtenaw, Livingston, and Macomb, radon gas is found at much higher concentrations than the national average. But why is that?
The answer begins underground. Michigan’s soil and bedrock contain higher amounts of uranium, a naturally occurring element that decays into radon gas. As this gas rises through the soil, it looks for pathways into homes—typically through foundation cracks, sump pits, drain tiles, and other openings in the building envelope.
Unlike warmer states, Michigan experiences long winters, which means homes are sealed tightly for much of the year. This energy efficiency creates the perfect storm for radon buildup, as less air exchange allows radon to concentrate inside. Add to that our region’s frequent use of basements and crawl spaces, and it becomes clear why so many Michigan homes are at risk.
Another factor is awareness—or the lack of it. Many homeowners simply aren’t familiar with radon or its risks, and without proactive testing, it often goes unnoticed for years. Even when homes are tested during real estate transactions, follow-up mitigation is sometimes delayed or neglected. That’s why education is such a critical part of the solution.
It’s important to know that radon isn’t just a rural issue, either. Homes in densely populated areas are just as likely to have high levels of radon, and neighboring homes can have completely different readings. There’s no reliable way to predict a home’s radon level without testing.
Fortunately, identifying and addressing radon is straightforward with the right professionals. Michigan Radon Control offers advanced testing services and effective mitigation systems tailored to your home’s layout. By understanding the cause of elevated radon in Michigan—and the ways it enters our homes—you’re already one step closer to protecting your health.