What Is Radon and Why Should Michigan Homeowners Care?

If you have never thought much about radon, you are not alone. Most Michigan homeowners have heard the word at some point — maybe during a home inspection or from a neighbor — but never gave it much attention. It is invisible, odorless, and tasteless, and it produces no immediate symptoms. There is nothing to see, smell, or feel that would ever tip you off that it is present in your home. That is exactly what makes it so dangerous.

Radon is responsible for approximately 21,000 lung cancer deaths in the United States every year. It is the second leading cause of lung cancer overall, behind only smoking, and it is the leading cause of lung cancer among people who have never smoked a day in their lives. Those are not small numbers. And yet most people go about their daily lives without ever testing their home — because there is nothing about radon that demands your attention until it is too late.

Here in Michigan, the problem is more significant than most residents realize. Approximately one in four Michigan homes has radon levels at or above the EPA's recommended action level. That is 25 percent of homes across the state — and elevated radon has been detected in all 83 Michigan counties. This is not a problem that belongs to one region or one type of home. It affects new construction and century-old farmhouses alike. It affects homes with full basements and homes built on slabs. If your home sits on the ground — and virtually every home does — radon is a risk worth taking seriously.

Where Does Radon Come From?

Radon is a naturally occurring radioactive gas. It forms when uranium breaks down in soil, rock, and water beneath the earth's surface. That process has been happening for millions of years and has nothing to do with industrial pollution or man-made contamination. It is simply geology.

Under normal circumstances, radon rises from the ground and disperses harmlessly into the open air. The problem begins when it enters an enclosed space — like your home. Radon seeps in through cracks in foundation walls and floors, gaps around pipes and utility openings, sump pit openings, and construction joints. Once inside, it has nowhere to go. It accumulates. And when the people living in that home breathe it in day after day, year after year, the risk of lung cancer climbs steadily.

Michigan's geology makes this particularly relevant. The soil composition across much of the state — especially in the western and central regions — contains naturally elevated levels of uranium-bearing materials. That means the ground beneath many Michigan homes is actively producing radon gas. The state's cold climate compounds the issue. During Michigan's long winters, homes are sealed up tight to conserve heat, which means radon that enters the home has even less opportunity to escape. Studies consistently show that radon levels are higher in colder months when ventilation is reduced.

How Much Is Too Much?

Radon is measured in picocuries per liter of air, written as pCi/L. The EPA has established an action level of 4 pCi/L — meaning that if your home tests at or above that level, the EPA recommends taking action to reduce it. Some health organizations recommend considering mitigation at levels as low as 2 pCi/L, because there is no known threshold below which radon exposure carries zero risk.

The average indoor radon level in American homes is around 1.3 pCi/L, which gives you a sense of the scale. A home testing at 4 pCi/L is already three times that average. Homes in Michigan sometimes test significantly higher — levels of 10, 20, or even higher pCi/L are not unheard of in areas with elevated geological risk.

The good news is that reducing radon levels is very achievable. Modern mitigation systems are effective, relatively affordable, and do not require major disruption to your home. But you cannot fix what you do not know about — and the only way to know your radon level is to test.

Why Michigan Homeowners Should Act

There are a few reasons why this matters more in Michigan than in some other parts of the country.

First, the geology. As mentioned, the soil composition across much of West Michigan and other parts of the state creates conditions that are favorable for elevated radon. Areas like Kent County, Ottawa County, Allegan County, and surrounding communities have seen high rates of elevated test results. This is not theoretical risk — it is documented in testing data collected from real Michigan homes.

Second, the housing stock. Michigan has a large number of older homes, many of which were built before radon was understood as a health hazard. These homes often have foundation cracks, aging construction joints, and ventilation characteristics that allow radon to enter and accumulate more easily than newer builds.

Third, the climate. Sealed homes in winter are radon traps. Michigan winters are long, and for several months out of the year most homes are sealed up tight against the cold. Windows stay closed, doors stay shut, and fresh air exchange drops significantly from October through March and sometimes beyond. During those months, any radon entering your home has far less opportunity to escape, and levels can climb higher than they would during the warmer seasons. The encouraging news is that you do not need to wait for a particular time of year to get tested. Whether it is the middle of January or the height of summer, testing your home now means one less Michigan winter affecting the air your family breathes. Every season you go without knowing your radon level is another season of potential exposure that could have been avoided.

Fourth, and perhaps most importantly, radon-related lung cancer is preventable. Unlike many cancer risks, this one has a solution. Testing is inexpensive and straightforward. Mitigation, when it is needed, involves installing a system that pulls radon from beneath your home and vents it safely outside — away from the air you breathe. Thousands of Michigan homeowners have had systems installed and now live with the peace of mind that comes from knowing their family is protected.

What You Should Do Next

If your home has never been tested for radon, that is the place to start. A professional radon test gives you an accurate, reliable measurement of the radon levels in your home and provides the information you need to make an informed decision.

At All Michigan Mitigation, we specialize exclusively in radon testing and mitigation. This is not a side service for us — it is everything we do. That focus means we bring a level of expertise and attention to radon that general contractors or home inspectors simply cannot match. We serve homeowners across West Michigan and are committed to making the testing and mitigation process as simple and stress-free as possible.

If you have questions about radon in your home, or if you are ready to schedule a test, we would love to hear from you. Visit us at allmichiganmitigation.com or give us a call. Your family's health is worth the conversation.

All Michigan Mitigation is a Michigan radon testing and mitigation company dedicated exclusively to helping homeowners understand and eliminate radon risk in their homes.