Plymouth, MA Radon Mitigation and Testing

Q: What is the average radon level in Plymouth, MA?

Based on 1 user-submitted tests, the average radon level is 7.00 pCi/L.

Q: What EPA Radon Zone is Plymouth in?

Plymouth is in Plymouth County, EPA Zone 2.

Q: How much does radon mitigation cost in Plymouth?

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

Avg: 7.00 pCi/L

Plymouth County

EPA Zone 2

1 user test

Historic Plymouth in Plymouth County along Massachusetts' South Shore shows an average radon level of 7.0 pCi/L, which exceeds the EPA action threshold. This coastal community in zip code 02360, part of the greater Boston Metro, sits on glacial deposits that can trap radon gas. Homes with basements or crawl spaces should prioritize professional radon mitigation.

7.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Plymouth, MA Radon Mitigation

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

Plymouth, MA Radon Testing

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

Plymouth, Massachusetts Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
7 pCi/L	Plymouth, MA	0-20 Years	Full Basement	Apr 2021

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

Plymouth Radon Facts

Key details about the radon risk profile for Plymouth and the 02360 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Plymouth County, MA

Zip Code

02360

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

7.00 pCi/L

User Tests Submitted

Plymouth and the 02360 zip code are located in Plymouth County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Plymouth, MA

What is the average radon level in Plymouth, MA?

Based on 1 user-submitted test, the average radon level in Plymouth is 7.00 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 Plymouth in?

Plymouth and the 02360 zip code are in Plymouth 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 Plymouth?

Radon mitigation in Plymouth 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 Plymouth?

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 Massachusetts

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

City	Avg User Radon Level	Submissions
Littleton	9.40 pCi/L	5
Gloucester	8.40 pCi/L	5
Florence	7.40 pCi/L	5
Douglas	12.00 pCi/L	4
Weymouth	8.50 pCi/L	4
Mashpee	5.00 pCi/L	4
Natick	5.00 pCi/L	4
Worcester	17.67 pCi/L	3
Attleboro	10.00 pCi/L	3
Stoneham	9.67 pCi/L	3
Hopkinton	9.33 pCi/L	3
Medford	8.00 pCi/L	3
Boxford	6.67 pCi/L	3
Reading	5.67 pCi/L	3
Haverhill	5.00 pCi/L	3
Melrose	5.00 pCi/L	3
Somerville	4.33 pCi/L	3
Woburn	19.00 pCi/L	2
Marlborough	13.50 pCi/L	2
Cohasset	11.50 pCi/L	2