Radon Testing in Edwardsville, IL

Radon testing in Edwardsville, IL measures how much radon gas has built up inside a home, reported in picocuries per liter (pCi/L) against the EPA action level of 4.0 pCi/L. Air Sense Environmental places a calibrated continuous radon monitor in Edwardsville homes for a 48-hour closed-house test and delivers a documented report, so buyers, sellers and homeowners in Madison County know whether the house sits above the action level. Edwardsville radon testing starts with the number. A radon test is the only way to get that number for a specific Edwardsville address.

Is radon a problem in Edwardsville, IL?

Yes. Madison County is in EPA Radon Zone 2, where the predicted average indoor radon level is 2 to 4 pCi/L, and individual Edwardsville 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. Edwardsville is home to Air Sense Environmental’s headquarters, and its housing mixes historic districts such as Leclaire and St. Louis Street, with stone foundations and crawl spaces, and newer subdivisions on poured basements.

Radon varies house by house rather than neighborhood by neighborhood. Two homes on the same Edwardsville street, built the same year by the same builder, can test at 1 pCi/L and 12 pCi/L because of what sits under each lot and how each foundation was sealed.

Which Edwardsville homes should be tested for radon?

Every Edwardsville home should have at least one radon test, and the EPA recommends retesting every two years for homes with a mitigation system and after any major renovation. The homes Air Sense Environmental tests most often in Edwardsville, IL:

• Historic homes in the Leclaire and St. Louis Street districts with stone foundations, cellars or crawl spaces
• Mid-century ranches and split-levels between downtown and the SIUE campus
• Newer subdivisions on the north and west sides with poured basements
• Rental homes and duplexes near SIUE, which landlords test between tenants
• Any home being bought or sold, where a radon test during the inspection period protects both sides of the deal

How does a radon test work in a Edwardsville home?

1. Monitor placement. A calibrated continuous radon monitor goes on the lowest level of the home that is or could be lived in, away from drafts, windows and exterior doors, following EPA and NRPP placement protocol. In Edwardsville, that usually means the basement or, in a home with a crawl space, the lowest room above it.
2. 48 hours of closed-house conditions. Windows stay closed and the HVAC runs normally while the monitor records hourly readings, with tamper detection so the result stands up in a real estate transaction.
3. A documented report. You receive the hourly data and the average reading against the 4.0 pCi/L action level, with a plain explanation of what the number means for your Edwardsville home.

How much does radon testing cost in Edwardsville, IL?

Radon testing prices in Edwardsville depend on the type of test and whether it is part of a real estate transaction. Air Sense Environmental publishes current pricing on its St. Louis radon testing cost guide and explains professional versus DIY testing on the main radon testing page, so the figures live in one place. Call 314-664-9807 for a quote for a Edwardsville address.

What happens if a Edwardsville radon test comes back at or above 4.0 pCi/L?

If the reading is at or above 4.0 pCi/L, the EPA recommends fixing the home, and the same Air Sense Environmental team designs and installs the system. See radon mitigation in Edwardsville, IL for how a sub-slab depressurization system is fitted to Edwardsville foundation types, and the St. Louis radon mitigation services page for the process, documented results and warranty. A post-mitigation test confirms the system brought the home below the action level.

Radon testing near Edwardsville: neighborhoods and nearby communities

Air Sense Environmental tests homes across Edwardsville, IL, including downtown Edwardsville, the Leclaire historic district and the neighborhoods around Southern Illinois University Edwardsville, in ZIP code 62025. Nearby communities with their own service pages:

• Radon testing and mitigation in Glen Carbon, IL
• Radon testing and mitigation in Maryville, IL
• Radon testing and mitigation in Troy, IL
• Radon testing and mitigation in Collinsville, IL
• All Air Sense Environmental service areas

Related from Air Sense Environmental: Indoor Air Quality Testing and Reviews & Projects.

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