# Belleville, IL

- **URL:** https://airsenseenvironmental.com/service-area/belleville-il/
- **Published:** 2026-07-20

Skip to content Radon Mitigation Services ▾ Radon Testing Commercial Radon Mitigation Commercial Radon Testing Indoor Air Quality Crawl Space Encapsulation Service Area Resources FAQ Blog Podcast Reviews & Projects About Us Contact 314-664-9807 Free Estimate Radon Mitigation Services Radon Testing Commercial Radon Mitigation Commercial Radon Testing Indoor Air Quality Crawl Space Encapsulation Company Service Area Resources FAQ Blog Podcast Reviews & Projects Media Room About Us Contact Call 314-664-9807 Home › Service Area › Belleville, IL Service Area · Belleville, IL Radon Testing & Mitigation in Belleville, IL Belleville, IL homeowners call Air Sense Environmental for four things: radon testing, radon mitigation, indoor air quality testing and crawl space encapsulation. The NRPP-certified, IEMA-licensed (#RNM20232346) team serves St. Clair County from Edwardsville, Illinois, and designs every radon system to bring the home below the EPA action level of 4.0 pCi/L. IEMA-Certified NRPP-Certified Free In-Home Estimates Call 314-664-9807 Get a Free Estimate Is radon a problem in Belleville, IL? Yes. St. Clair County is in EPA Radon Zone 2, where the predicted average indoor radon level is 2 to 4 pCi/L, and individual Belleville homes routinely test well above the 4.0 pCi/L action level. The Illinois Department of Public Health reports that about 41 percent of Illinois homes tested have come back at or above 4.0 pCi/L, and Illinois requires radon professionals to hold an IEMA license. Belleville is one of the oldest cities in the Metro East, and its housing runs from 19th-century brick near downtown to post-war ranches and newer subdivisions on the east side. Because radon depends on the ground under a single lot and the openings in a single foundation, Belleville results change from address to address. Testing the specific house is the only way to know where it stands. Radon testing in Belleville, IL For radon testing in Belleville, Air Sense Environmental places a continuous monitor on the lowest livable level for 48 hours and delivers a documented report against the 4.0 pCi/L action level. Radon testing in Belleville covers how the test works, and the radon testing cost guide holds current pricing. Radon mitigation in Belleville, IL A Belleville radon mitigation system pulls soil gas from beneath the slab or crawl space membrane and vents it above the roofline; every install ends with a verification test. See radon mitigation in Belleville for the process, documented results and warranty. Indoor air quality testing in Belleville, IL For indoor air quality in Belleville, a continuous monitor tracks particulates, VOCs, carbon dioxide, carbon monoxide and humidity, and the report shows which readings sit outside healthy ranges. Details are on indoor air quality in Belleville. Crawl space encapsulation in Belleville, IL A sealed, conditioned crawl space keeps ground moisture and soil gas from rising into a Belleville home; Air Sense Environmental installs the barrier, seals the vents and sizes the dehumidifier. Read more on the St. Louis crawl space encapsulation page. Which Belleville homes does Air Sense Environmental work on? The Belleville homes the team sees most often: Brick homes near downtown and the Belleville historic districts with stone or brick foundations and cellars Post-war ranch homes from the 1950s and 1960s with poured or block basements Homes near Scott Air Force Base built for the base community in the 1970s and 1980s Newer construction east of Green Mount Road, including slab-on-grade homes What should Belleville homeowners expect? Test first. A 48-hour continuous monitor test gives the number everything else depends on. Read the report together. You get the hourly data and a plain explanation of what it means for the house. Design the fix. If the reading is at or above 4.0 pCi/L, the system is designed around your foundation during a free in-home estimate. Install and verify. Most systems go in within a single day, and a post-mitigation test confirms the result. Belleville neighborhoods and nearby communities Air Sense Environmental works across Belleville, IL, including downtown Belleville, the Signal Hill area and the neighborhoods toward Scott Air Force Base, in ZIP codes 62220, 62221, 62223 and 62226. Nearby communities with their own service pages: Radon testing and mitigation in O’Fallon, IL Radon testing and mitigation in Swansea, IL Radon testing and mitigation in Fairview Heights, IL Radon testing and mitigation in Collinsville, IL All Air Sense Environmental service areas From Our Work Explore More From Air Sense Services in Belleville, IL Indoor Air Quality in Belleville, ILRadon Mitigation in Belleville, ILRadon Testing in Belleville, IL Nearby Communities Bethalto, ILBrentwood, MOBrighton, ILChesterfield, MOClayton, MOCollinsville, ILColumbia, ILCreve Coeur, MO Learn More Radon Mitigation in St. Louis, MORadon TestingAll Service AreasGet a Free Estimate Get Your Number Radon under control. Air you can trust. Free in-home estimate, custom-designed system, 24-hour availability. Call 314-664-9807 5237 Old Alton Edwardsville Rd Edwardsville, IL 62025 314-664-9807 · Open 24 hours NRPP-Certified · IEMA License #RNM20232346 Services Radon Mitigation Radon Testing Commercial Radon Commercial Radon Testing Radon Fan Replacement Sub-Slab Depressurization Indoor Air Quality Crawl Space Encapsulation Company About Us Service Area Reviews & Projects FAQ Blog Podcast Resources Media Room Contact © 2026 Air Sense Environmental. All rights reserved. Radon Mitigation & Testing · St. Louis, MO & Metro East, IL Call 314-664-9807 Free Estimate