Southwest Harbor, ME Radon Levels

Q: What is the average radon level in Southwest Harbor, ME?

Based on 1 user-submitted tests, the average radon level is 13.00 pCi/L.

Q: What EPA Radon Zone is Southwest Harbor in?

Southwest Harbor is in Hancock County, EPA Zone 1.

Q: How much does radon mitigation cost in Southwest Harbor?

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

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

Southwest Harbor, ME Radon Facts

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

County Hancock County, ME

Zip Code 04679

Avg. User Level 13.00 pCi/L

User Tests 1

Located on Mount Desert Island in Hancock County, Southwest Harbor recorded a concerning radon level of 13.0 pCi/L from recent testing. This reading significantly exceeds the EPA action level, indicating that homes in zip code 04679 should be tested promptly and mitigated if similar elevated levels are confirmed.

13.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Southwest Harbor, ME Radon Mitigation

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Southwest Harbor, ME Radon Levels

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

Radon Level	City	Home Age	Foundation
13 pCi/L	Southwest Harbor, ME	21-50 Years	Full Basement

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

Radon FAQ for Southwest Harbor, ME

What is the average radon level in Southwest Harbor, ME?

Based on 1 user-submitted test, the average radon level in Southwest Harbor is 13.00 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 Southwest Harbor in?

Southwest Harbor and the 04679 zip code are in Hancock 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 Southwest Harbor?

Radon mitigation in Southwest Harbor 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 Southwest Harbor?

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

Southwest Harbor, ME Radon Levels

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

Southwest Harbor, ME Radon Facts

Southwest Harbor, ME Radon Mitigation

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Southwest Harbor, ME Radon Levels

Radon FAQ for Southwest Harbor, ME

Most Active Radon Markets in Maine

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