Falmouth, ME Radon Levels

Q: What EPA Radon Zone is Falmouth in?

Falmouth is in Cumberland County, EPA Zone 1.

Q: How much does radon mitigation cost in Falmouth?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Falmouth radon levels and find certified testing and mitigation professionals to keep your home safe

Falmouth, ME Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Cumberland County, ME

Zip Code 04105

Situated in Cumberland County within the Portland Metro area, Falmouth rests on Maine's complex geology of granite bedrock and glacial deposits that often contribute to elevated radon levels across the region. The community features a mix of historic New England homes and modern suburban development, with many properties having full basements where radon accumulates most readily. With testing data for Falmouth (ZIP 04105) currently limited, residents are strongly encouraged to test their homes given Maine's well-documented radon concerns.

Falmouth, ME Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon FAQ for Falmouth, ME

What EPA Radon Zone is Falmouth in?

Falmouth and the 04105 zip code are in Cumberland County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Falmouth?

Radon mitigation in Falmouth typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Falmouth?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Maine

Cities in Maine with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Rumford	6.00 pCi/L	4
York	8.50 pCi/L	2
Saco	7.50 pCi/L	2
Hampden	4.50 pCi/L	2
Scarborough	14.00 pCi/L	1
Kittery	12.00 pCi/L	1
South Portland	10.00 pCi/L	1
Portland	4.00 pCi/L	1