Jefferson, ME Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 5.50 pCi/L.

Q: What EPA Radon Zone is Jefferson in?

Jefferson is in Lincoln County, EPA Zone 1.

Q: How much does radon mitigation cost in Jefferson?

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

Avg: 5.50 pCi/L

Lincoln County

EPA Zone 1

2 user tests

Situated in coastal Lincoln County, Jefferson sits on Maine's complex geology of granite and metamorphic rocks that can produce variable radon levels. Testing data shows an average radon level of 5.5 pCi/L, exceeding the EPA action level of 4.0 pCi/L. The community's older housing stock, including many homes with fieldstone basements, creates conditions where radon can accumulate to concerning levels.

5.50

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Jefferson, ME. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Jefferson, ME Radon Mitigation

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

Jefferson, ME Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Jefferson, Maine Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
2 pCi/L	Jefferson, ME	21-50 Years	Full Basement	Aug 2023
9 pCi/L	Jefferson, ME	21-50 Years	Full Basement	May 2018

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

Jefferson Radon Facts

Key details about the radon risk profile for Jefferson and the 04348 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lincoln County, ME

Zip Code

04348

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

5.50 pCi/L

User Tests Submitted

Jefferson and the 04348 zip code are located in Lincoln County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Jefferson, ME

What is the average radon level in Jefferson, ME?

Based on 2 user-submitted tests, the average radon level in Jefferson is 5.50 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 Jefferson in?

Jefferson and the 04348 zip code are in Lincoln 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 Jefferson?

Radon mitigation in Jefferson 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 Jefferson?

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Rumford	5.67 pCi/L	3
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