Charlemont, MA Radon Levels

Q: What EPA Radon Zone is Charlemont in?

Charlemont is in Franklin County, EPA Zone 2.

Q: How much does radon mitigation cost in Charlemont?

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

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

Charlemont, MA Radon Facts

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

County Franklin County, MA

Zip Code 01339

Set in the scenic hills of Franklin County, Charlemont's New England geology features crystalline bedrock that can contain naturally occurring uranium deposits. The town's historic housing stock, including many homes built before modern radon awareness, may lack the foundation sealing found in newer construction. Since testing data remains limited, homeowners are encouraged to conduct radon testing regardless of home age.

9.13

pCi/L area average

Above EPA Action Level

Franklin County average: 9.13 pCi/L, based on 8 user-submitted tests across 6 cities in the county. No homeowner readings have been submitted for Charlemont 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+

Charlemont, 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 Charlemont, MA

No homeowner tests have been submitted for Charlemont 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
Conway	11.6 mi	4.00 pCi/L	1
Goshen	12.5 mi	12.00 pCi/L	1
Greenfield	13.6 mi	17.00 pCi/L	1
Dalton	16.5 mi	7.00 pCi/L	1
Williamstown	17.4 mi	16.00 pCi/L	1
Haydenville	18.3 mi	4.00 pCi/L	1
Sunderland	19.6 mi	4.50 pCi/L	2
Leeds	19.9 mi	5.00 pCi/L	2

Franklin County Radon Profile

EPA mapping assigns Franklin 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 6 cities in Franklin County average 9.13 pCi/L across 8 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 Franklin County home regardless of zone or a neighbor's results.

Radon FAQ for Charlemont, MA

What EPA Radon Zone is Charlemont in?

Charlemont and the 01339 zip code are in Franklin 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 Charlemont?

No homeowner radon tests have been submitted for Charlemont yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Franklin County average—are the best available indicator of local conditions until Charlemont 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 Charlemont?

Radon mitigation in Charlemont 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 Charlemont?

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.