Portland, ME Radon Levels
Check local Portland radon levels and find certified testing and mitigation professionals to keep your home safe
Portland, ME Radon Facts
Maine's largest city in Cumberland County shows an average radon level of 4.0 pCi/L, right at the EPA action threshold. Built on granite bedrock with a housing mix spanning from historic brick to modern construction, Portland's zip code 04101 area requires careful attention to radon levels. While current readings meet EPA guidelines, the geological foundation and basement-heavy housing stock warrant regular testing.
Based on 1 user-submitted radon test for homes in Portland, ME. The EPA recommends taking action at or above 4.0 pCi/L.
Portland, ME Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Portland, ME Radon Levels
User-submitted radon test readings from homes in the Portland area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Portland, ME | 100+ Years | Full Basement |
Have a radon test result for Portland? Submit your reading to help other homeowners.
Radon FAQ for Portland, ME
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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 |