Winthrop, ME Radon Levels
Check local Winthrop radon levels and find certified testing and mitigation professionals to keep your home safe
Winthrop, ME Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Kennebec County, ME
Zip Code
04364
Set among Maine's lakes region in Kennebec County, Winthrop sits on glacial outwash deposits over granite bedrock typical of central Maine's geological formation. The community's housing includes lakefront cottages, year-round homes, and historic properties, many with full basements extending into the rocky terrain. Given limited radon testing data for zip code 04364, homeowners should pursue individual testing considering Maine's granite geology and the potential for radon accumulation in below-grade spaces.
Winthrop, 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 Winthrop, ME
What EPA Radon Zone is Winthrop in?
Winthrop and the 04364 zip code are in Kennebec 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 Winthrop?
Radon mitigation in Winthrop 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 Winthrop?
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 |