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NRPP-certified radon testing and mitigation professionals serving O Fallon, Missouri. Call directly. Phone numbers visible on every listing.
Missouri is in EPA Radon Zone 1, which means homes in this area have a high probability of elevated radon levels. The EPA strongly recommends testing all homes. A professional radon test typically costs $125-$400, and if elevated levels are found, a mitigation system typically costs $800-$2,500 to install.