Long Island, ME Radon Levels
Check local Long Island radon levels and find certified testing and mitigation professionals to keep your home safe
Long Island, ME Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Cumberland County, ME
Zip Code
04050
Positioned in Cumberland County within the Portland metropolitan area, Long Island rests on glacial marine sediments in Casco Bay where radon testing data remains scarce. This island community in zip code 04050 features seasonal cottages and year-round homes, many built on granite foundations or concrete slabs suited to coastal conditions. While specific radon readings aren't available, testing is advisable given Maine's glacial geology and the potential for radon concentration in closed residential spaces.
Long Island, 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 Long Island, ME
What EPA Radon Zone is Long Island in?
Long Island and the 04050 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 Long Island?
Radon mitigation in Long Island 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 Long Island?
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 |