Chilmark, MA Radon Levels

Q: What EPA Radon Zone is Chilmark in?

Chilmark is in Dukes County, EPA Zone 2.

Q: How much does radon mitigation cost in Chilmark?

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

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

Chilmark, MA Radon Facts

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

County Dukes County, MA

Zip Code 02535

This Martha's Vineyard community in Dukes County occupies unique coastal geography with glacial soils and seasonal housing patterns typical of the islands. While specific radon data for Chilmark (02535) is not yet available, the EPA Zone 2 designation suggests moderate potential for elevated readings. Island residents should prioritize radon testing, as coastal homes with basements or crawl spaces can trap radon gas despite the maritime setting.

7.67

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.67 pCi/L, based on 15 tests from 10 nearby cities. No readings have been submitted for Chilmark yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Chilmark, 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 Chilmark, MA

No homeowner tests have been submitted for Chilmark 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
Falmouth	15.6 mi	7.00 pCi/L	1
South Dartmouth	19.1 mi	20.00 pCi/L	1
North Falmouth	20.6 mi	6.00 pCi/L	1
Mashpee	22.4 mi	5.00 pCi/L	4
New Bedford	22.4 mi	6.00 pCi/L	2
Westport	23.0 mi	4.00 pCi/L	1
North Dartmouth	23.2 mi	10.00 pCi/L	1
Acushnet	25.2 mi	11.00 pCi/L	1

Dukes County Radon Profile

Dukes 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. User-submitted readings are still sparse within Dukes County itself, so the nearby measurements shown on this page provide the closest real-world picture of local radon conditions. 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 Dukes County.

Radon FAQ for Chilmark, MA

What EPA Radon Zone is Chilmark in?

Chilmark and the 02535 zip code are in Dukes 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 Chilmark?

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

Radon mitigation in Chilmark 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 Chilmark?

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.