Williamstown, MA Radon Levels

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.

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

Williamstown, MA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Berkshire County, MA

Zip Code 01267

Avg. User Level 16.00 pCi/L

User Tests 1

Nestled in Berkshire County in western Massachusetts, Williamstown has recorded a concerning radon level of 16.0 pCi/L - four times the EPA action threshold. The area's mountainous terrain and complex New England geology create ideal conditions for radon accumulation. Residents throughout the 01267 zip code should prioritize immediate testing and mitigation, particularly in homes with basements common to this region.

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.

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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.

Berkshire County Radon Profile

Berkshire County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 5 cities in Berkshire County average 8.20 pCi/L across 5 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Berkshire County.

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.

Radon Levels Near Williamstown, MA

User-submitted radon levels from the cities closest to Williamstown with recorded test data. Explore nearby communities to compare local readings.

City	Distance	Avg User Level	Submissions
Dalton	16.3 mi	7.00 pCi/L	1
Lenox	24.1 mi	7.00 pCi/L	1
Richmond	24.3 mi	4.00 pCi/L	1
Great Barrington	36.3 mi	7.00 pCi/L	1