# Metro East Radon Mitigation

- **URL:** https://airsenseenvironmental.com/metro-east-radon-mitigation/
- **Published:** 2026-07-27

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 Metro East · Illinois Side Radon Mitigation on the Illinois Side of St. Louis IEMA-Certified NRPP-Certified BBB A-Rated Edwardsville HQ 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. Call 314-664-9807 Get a Free In-Home Estimate IEMA License #RNM20232346 Free Written Estimates 24-Hour Availability The Target on Every Install EPA action level4.0 pCi/L Our design target< 2.0 pCi/L Systems are engineered to bring your home below the EPA action level of 4.0 pCi/L. Built to perform Coverage Communities We Serve in the Metro East Alton, IL Belleville, IL Bethalto, IL Brighton, IL Collinsville, IL Columbia, IL Edwardsville, IL Elsah, IL Fairview Heights, IL Glen Carbon, IL Godfrey, IL Granite City, IL Highland, IL Jerseyville, IL Maryville, IL Millstadt, IL O'Fallon, IL Swansea, IL Troy, IL Waterloo, IL 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 test as well as mitigate, including tests tied to a home sale. 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 Get Your Number Metro East home testing high? Free in-home estimate, custom-designed system, 24-hour availability across the Metro East. 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