Common questions about radon
- Can asbestos block radon that’s outside? It is in my basement floor
- Can radon levels of 100 be mitigated effectively, and if so how much?
- Did you have radon mitigation done in your home? What things should you know first?
- Do ceiling fans reduce radon?
- Do radon mitigation systems decrease the value of your house?
- Does it matter if I test for radon in the summer or the winter
Wells radon mitigation — local context
Plan on elevated radon in Wells — here, high is the default, not the exception. Wells sits in York County, which the EPA's Map of Radon Zones puts in Zone 1, its highest tier, meaning a predicted average indoor screening level above the 4 pCi/L action level (EPA, Map of Radon Zones — Maine). York is also Maine's southwesternmost county, and the Maine Environmental Public Health Tracking Network names "the southwest part of the state" as a region where more than 50% of tested households show elevated radon. Statewide, Maine averages 4.3 pCi/L — about the action level and roughly 3x the national 1.3 (Maine Radon Coordinator Jonathan Dyer, via WGME). The source is the granite under southern Maine: USGS finds bedrock wells within about 5 km of granitic intrusions at risk for elevated radon. Our radon test is $50 (credited toward the job if you proceed — never free), and mitigation runs $900–$6,000, most jobs $1,950–$2,250. We install sub-slab and crawl-space sub-membrane systems. Start with a radon test; see radon mitigation. Cert RMS-113966.
What a recent customer said
603 Basement Solutions was a great company to work with for radon mitigation for a home on a slab foundation. ... Most importantly, our radon level dropped within 24 hours from 11.3 pCi/L to 0.48 pCi/L!
Frequently asked questions
Is radon a real problem in Wells, Maine?
Yes. Wells is in York County, which the EPA's Map of Radon Zones classifies as Zone 1 — the highest tier, meaning a predicted average indoor screening level above the 4 pCi/L action level. York County is also in southwest Maine, where the Maine Environmental Public Health Tracking Network reports that more than 50% of tested households show elevated radon. Statewide, Maine averages 4.3 pCi/L, about three times the national average of 1.3 (Maine Radon Coordinator, via WGME). The EPA recommends fixing a home at 4 pCi/L or higher, so a test is the right first step.
Why do Wells homes have high radon?
The granite under southern Maine. USGS analysis of Maine's private bedrock wells found elevated radon within about 5 to 10 km of granitic intrusions, with wells inside roughly 5 km of those granite bodies most at risk. Coastal southern Maine, including Wells, sits over that kind of granite-bearing bedrock, which is why radon shows up here — and why testing matters even on newer homes.
How much does radon mitigation cost in Wells?
603's radon test is $50, credited toward the job if you proceed — it is not free. Mitigation itself runs $900 to $6,000, with most jobs landing between $1,950 and $2,250 depending on the home and foundation. We install both sub-slab depressurization and crawl-space sub-membrane systems, and we hold Maine radon certification RMS-113966.
Radon Mitigation in nearby New England towns
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