Metro East · Illinois Side
Radon Mitigation on the Illinois Side of St. Louis
Radon mitigation on the Illinois side of St. Louis is handled from our Edwardsville headquarters, which puts our crews inside the Metro East rather than driving over from Missouri.
We hold IEMA license #RNM20232346 for radon work in Illinois.
We serve twenty Metro East communities, from Jerseyville and Alton in the north down to Columbia and Waterloo.
The Target on Every Install
Systems are engineered to bring your home below the EPA action level of 4.0 pCi/L.
Built to performCoverage
Communities We Serve in the Metro East
Licensing
Illinois Licensing and What It Means
Illinois regulates radon professionals through the Illinois Emergency Management Agency.
Measurement and mitigation both require a current state license, and the number belongs on any proposal you receive. Ours is #RNM20232346.
If you are collecting quotes on the Illinois side, ask each contractor for theirs.
Local Conditions
Why Testing Your Own Address Matters
Radon levels vary block to block and even between neighboring houses.
Two homes on the same street with different foundations and different air handling can test very differently, so a county average is not a substitute for testing your address.
The Work
Our Mitigation Approach
We design each system around the foundation we find rather than fitting every house to one template.
Sub-slab depressurization is the most common approach, with the suction point and fan sized to the building. Systems are engineered below the EPA action level of 4.0 pCi/L.
After installation we recommend a follow-up radon test to confirm the result.
Testing
Radon Testing on the Illinois Side
We coordinate radon testing and handle the mitigation, including tests tied to a home sale. Testing is performed by an IEMA-licensed radon measurement professional.
If you are buying or selling in the Metro East and need a reading inside an inspection window, results come back in two to three business days.
Experience
Local Crews, Local Work
Being based in Edwardsville means Illinois work is local work for us, not a trip across the river.
In the Field
Metro East Installations
Common Questions
Frequently Asked Questions About Radon in the Metro East
How common is radon in homes in Illinois?
Elevated radon is common enough that the Illinois Emergency Management Agency urges all Illinois residents to test their homes, and the agency publishes radon level information for the state. Metro East homes in Madison and St. Clair counties are part of that picture. Results still vary from house to house, so testing your own living space is the only way to compare your home with the EPA action level of 4.0 pCi/L.
Why is radon so high in Illinois?
Illinois radon comes from uranium that occurs naturally in the soils and bedrock across the state. As uranium breaks down it produces radon gas, which moves up through the soil and into homes through foundation cracks, sump pits and gaps around pipes. Long heating seasons and the many homes with basements give that gas more ways in and a stronger pull from the house above.
Where can I find a radon map of Illinois?
The Illinois Emergency Management Agency radon program publishes radon level information for Illinois, and the EPA Map of Radon Zones shows predicted county levels nationwide. Use either map to understand area risk, not to skip testing: the EPA says its map should be supplemented with local data and cannot predict the level in a single home. Air Sense Environmental can arrange a test of your home by a licensed radon measurement professional, so your house gets its own number.
Get Your Number
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