Certified Radon Testing in the Peoria Area: What Homeowners Need to Know

The 2nd Leading Cause of Lung Cancer

Radon gas moves through soil layers and enters homes through cracks, pipes, and foundation gaps — making professional testing essential for homeowners.

Radon is one of those hazards that never announces itself. It has no color, no smell, and no taste, yet it is the second leading cause of lung cancer in the United States. For homeowners and homebuyers in Peoria, Bloomington, and the surrounding Central Illinois communities, understanding radon and knowing how to test for it is not optional — it is essential.

At Heart of Illinois Property Services, certified radon testing is one of the core services we provide to families across the Peoria area. Here is what you should know before buying, selling, or simply living in your current home.

Why Central Illinois Homes Are at Risk

Radon forms naturally when uranium in the soil breaks down into radium and then decays into radon gas. The Midwest sits on soil that is particularly rich in uranium, which means homes in Peoria, Tazewell, Woodford, and McLean counties face a higher-than-average risk of elevated radon levels.

The gas enters your home through the path of least resistance — cracks in the foundation, gaps around pipes, loose-fitting joints, floor drains, and even through porous concrete. Once inside, radon can accumulate to dangerous concentrations, especially in basements and lower levels where most families spend significant time.

What the Numbers Mean

Radon is measured in picocuries per liter of air (pCi/L). The Environmental Protection Agency has set 4 pCi/L as the action level — the point at which remediation is strongly recommended. Both federal and Illinois state guidelines align on this threshold. However, the EPA also notes that there is no truly safe level of radon exposure, and homeowners should consider mitigation even at levels between 2 and 4 pCi/L.

To put this in perspective, a home with radon levels at 4 pCi/L exposes its occupants to roughly the same radiation risk as smoking half a pack of cigarettes per day. That is a risk worth taking seriously, particularly for families with children or anyone with a history of respiratory illness.

How Professional Radon Testing Works

When you schedule radon testing with HOI Property Services, the process is straightforward and designed to give you accurate, reliable results.

We place a continuous radon monitor in the lowest livable level of your home. The device records radon levels at regular intervals over a minimum 48-hour testing period. During this time, we ask that you maintain closed-house conditions — keeping windows and exterior doors shut as much as reasonably possible — to ensure the test reflects typical indoor radon accumulation.

Once the testing period is complete, we retrieve the monitor and analyze the data. Every result we provide is independently verified by PriorityLab, a nationally recognized laboratory. This independent verification gives you confidence that your results are accurate and defensible, whether you are negotiating a real estate transaction or making decisions about your family's health.

When Should You Test?

There are several situations where radon testing should be at the top of your list. If you are buying a home in Peoria or anywhere in Central Illinois, testing before closing gives you leverage to negotiate remediation with the seller. If you are selling, proactive testing demonstrates transparency and can prevent delays during the buyer's inspection period.

Even if you are not buying or selling, the EPA recommends that every home be tested at least once, and retested every two to five years. Radon levels can change over time as soil conditions shift, foundations settle, and weather patterns vary. A home that tested below 4 pCi/L five years ago may read differently today.

What Happens If Levels Are High?

A high radon reading is not a reason to panic — it is a reason to act. Radon mitigation systems are well-established technology that typically reduce indoor radon levels by up to 99 percent. Most systems involve a vent pipe and fan that draw radon from beneath the foundation and release it safely above the roofline.

We can guide you through understanding your results and help you determine the right next steps. Our goal is to make sure you have the information and confidence to protect your home and your family.

Certified Radon Testing You Can Trust

Heart of Illinois Property Services provides certified radon testing across Peoria, Bloomington, Morton, East Peoria, Washington, and the broader Central Illinois region. Every test is conducted using professional-grade equipment, follows EPA testing protocols, and is backed by independent laboratory verification through PriorityLab.

Whether you are a first-time homebuyer, a long-time homeowner, or a real estate professional looking for a dependable testing partner, we are here to help.

Ready to schedule your radon test? Contact HOI Property Services today at (309) 712-4189 or use HOI Chat on our home page.