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Belfast, ME Radon Levels

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


Belfast, ME Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Waldo County, ME
Zip Code 04915
Avg. User Level 5.00 pCi/L
User Tests 1

This coastal Waldo County community shows an average radon level of 5.0 pCi/L based on available testing data, which exceeds the EPA action threshold of 4.0 pCi/L. Belfast's location along Penobscot Bay, with its granite bedrock and many older homes featuring stone foundations, creates conditions where radon can accumulate significantly. Residents in zip code 04915 should prioritize radon testing and mitigation when levels exceed safe thresholds.

5.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Belfast, ME. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Belfast, ME Radon Mitigation

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

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Belfast, ME Radon Levels

User-submitted radon test readings from homes in the Belfast area.

Radon LevelCityHome AgeFoundation
5 pCi/L Belfast, ME 0-20 Years Full Basement

Have a radon test result for Belfast? Submit your reading to help other homeowners.

Radon FAQ for Belfast, ME

What is the average radon level in Belfast, ME?
Based on 1 user-submitted test, the average radon level in Belfast is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Belfast in?
Belfast and the 04915 zip code are in Waldo County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Belfast?
Radon mitigation in Belfast 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 Belfast?
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.

CityAvg User Radon LevelSubmissions
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