Cohasset, MA Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 11.50 pCi/L.

Q: What EPA Radon Zone is Cohasset in?

Cohasset is in Norfolk County, EPA Zone 2.

Q: How much does radon mitigation cost in Cohasset?

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

Avg: 11.50 pCi/L

Norfolk County

EPA Zone 2

2 user tests

Cohasset is located in Norfolk County, Massachusetts. With 2 user-submitted readings averaging 11.50 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 02025 zip code.

11.50

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Cohasset, MA Radon Mitigation

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

Cohasset, MA Radon Testing

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

Cohasset, Massachusetts Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
12 pCi/L	Cohasset, MA	0-20 Years	Full Basement	May 2023
11 pCi/L	Cohasset, MA	0-20 Years	Full Basement	Dec 2020

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

Cohasset Radon Facts

Key details about the radon risk profile for Cohasset and the 02025 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Norfolk County, MA

Zip Code

02025

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

11.50 pCi/L

User Tests Submitted

Cohasset and the 02025 zip code are located in Norfolk 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 Cohasset, MA

What is the average radon level in Cohasset, MA?

Based on 2 user-submitted tests, the average radon level in Cohasset is 11.50 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 Cohasset in?

Cohasset and the 02025 zip code are in Norfolk 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 Cohasset?

Radon mitigation in Cohasset 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 Cohasset?

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