Williamstown, MA Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 16.00 pCi/L.

Q: What EPA Radon Zone is Williamstown in?

Williamstown is in Berkshire County, EPA Zone 2.

Q: How much does radon mitigation cost in Williamstown?

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

Avg: 16.00 pCi/L

Berkshire County

EPA Zone 2

1 user test

Williamstown is located in Berkshire County, Massachusetts. With 1 user-submitted readings averaging 16.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 01267 zip code.

16.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Williamstown, MA Radon Mitigation

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

Williamstown, MA Radon Testing

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

Williamstown, Massachusetts Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
16 pCi/L	Williamstown, MA	21-50 Years	Full Basement	Jun 2020

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

Williamstown Radon Facts

Key details about the radon risk profile for Williamstown and the 01267 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Berkshire County, MA

Zip Code

01267

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

16.00 pCi/L

User Tests Submitted

Williamstown and the 01267 zip code are located in Berkshire 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 Williamstown, MA

What is the average radon level in Williamstown, MA?

Based on 1 user-submitted test, the average radon level in Williamstown is 16.00 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 Williamstown in?

Williamstown and the 01267 zip code are in Berkshire 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 Williamstown?

Radon mitigation in Williamstown 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 Williamstown?

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