Williamsburg, MA Radon Levels

Q: What EPA Radon Zone is Williamsburg in?

Williamsburg is in Hampshire County, EPA Zone 2.

Q: How much does radon mitigation cost in Williamsburg?

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

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

Williamsburg, MA Radon Facts

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

County Hampshire County, MA

Zip Code 01096

Set in Hampshire County within the Northampton Metro area, Williamsburg occupies Massachusetts' Connecticut River Valley where glacial deposits over metamorphic bedrock create EPA Zone 2 conditions. Testing data for this 01096 community is currently limited, making individual home testing important. The area's New England geology, combining glacial materials with underlying schist and gneiss formations, can produce radon levels that require professional assessment to evaluate accurately.

6.86

pCi/L area average

Above EPA Action Level

Hampshire County average: 6.86 pCi/L, based on 21 user-submitted tests across 10 cities in the county. No homeowner readings have been submitted for Williamsburg itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Williamsburg, MA Radon Mitigation

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

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Radon Readings Near Williamsburg, MA

No homeowner tests have been submitted for Williamsburg yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Goshen	2.5 mi	12.00 pCi/L	1
Haydenville	4.2 mi	4.00 pCi/L	1
Leeds	5.3 mi	5.00 pCi/L	2
Florence	7.4 mi	6.83 pCi/L	6
Conway	8.2 mi	4.00 pCi/L	1
Northampton	9.6 mi	3.00 pCi/L	2
Sunderland	11.2 mi	4.50 pCi/L	2
Easthampton	11.3 mi	6.00 pCi/L	1

Hampshire County Radon Profile

EPA mapping assigns Hampshire County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 10 cities in Hampshire County average 6.86 pCi/L across 21 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Hampshire County home regardless of zone or a neighbor's results.

Radon FAQ for Williamsburg, MA

What EPA Radon Zone is Williamsburg in?

Williamsburg and the 01096 zip code are in Hampshire 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.

Why are radon readings shown from areas near Williamsburg?

No homeowner radon tests have been submitted for Williamsburg yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Hampshire County average—are the best available indicator of local conditions until Williamsburg homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Williamsburg?

Radon mitigation in Williamsburg 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 Williamsburg?

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.