Radon Mitigation in Cumberland County, Maine
EPA Zone 1 · Roughly 28% of homes in Cumberland County test above the EPA action level. Here's what local homeowners need to know — and how we serve the area.
Southern coastal county. The Portland metro shows somewhat lower averages near the coast; inland Cumberland (Windham, Gorham, Falmouth) trends notably higher. We are licensed, insured, NRPP-certified, and serve Cumberland County with same-week installation in most cases.
Towns We Serve in Cumberland County
Click your town for local information, or call us anytime — we cover the entire county.
Don't see your town? We serve all of Cumberland County and surrounding areas. Contact us for a free quote.
Why Cumberland County Has High Radon
Local Geology
Mixed coastal sediments along the shore transition to granite-rich bedrock inland. Inland Cumberland readings are routinely 4–8 pCi/L.
Housing Stock
Older Portland-area homes, dense suburbs, and fast-growing inland subdivisions. Tighter modern construction often produces higher readings than older drafty homes.
Well Water
Coastal areas are largely on municipal water. Inland Cumberland (Windham, Standish, Gray) is heavily on private wells with frequent radon-in-water issues.
Climate Effect
Maine's long heating season creates a strong stack effect that pulls radon out of the soil and into homes — winter readings in Cumberland County typically run 30–50% higher than summer.
Mitigation Services for Cumberland County Homes
Sub-Slab Depressurization
Our standard system for basements, slab-on-grade, and crawlspaces. Typical install $1,500–$3,000 depending on foundation type.
Learn more →Aeration Treatment
Required when well water tests above 4,000 pCi/L — common in Cumberland County. Aeration system $4,500–$6,500 installed.
Learn more →Fast-Turnaround for Closings
Same-week installs for inspection-contingency timelines, complete with all documentation buyers and lenders need.
Learn more →Common Questions From Cumberland County Homeowners
How much does radon mitigation cost in Cumberland County?
Most homes in Cumberland County fall in the $1,500–$3,000 range for a standard sub-slab depressurization system. Crawlspaces and slab-on-grade homes can run higher. Use our cost calculator for a fast estimate.
How long does installation take?
Most Cumberland County installs are completed in a single day. Post-mitigation testing takes another 4–7 days to confirm levels are below 4 pCi/L.
Do I need to test for radon in well water?
If you're on a private well in Cumberland County, yes — Maine wells routinely test above 4,000 pCi/L. Test through Maine HETL or your county Cooperative Extension. Learn about water radon →
Are you licensed to work in Cumberland County?
Yes. We are NRPP-certified, fully insured, and licensed to install radon mitigation systems anywhere in Maine, including all towns in Cumberland County.
Get a Free Quote in Cumberland County
No pressure, no upsell. Just an honest assessment and a fair price.
Get a Quote Call (207) 483-5637