North Chatham, MA Radon Levels

Q: What EPA Radon Zone is North Chatham in?

North Chatham is in Barnstable County, EPA Zone 2.

Q: How much does radon mitigation cost in North Chatham?

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

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

North Chatham, MA Radon Facts

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

County Barnstable County, MA

Zip Code 02650

Positioned in Barnstable County on Cape Cod's outer arm, North Chatham sits on glacial outwash deposits and marine sediments. Radon testing data is currently sparse for zip code 02650, though the area's sandy soils typically present lower radon risk. Homeowners should still consider testing, particularly in homes with basements or those built on filled areas where radon accumulation patterns may vary.

6.80

pCi/L area average

Above EPA Action Level

Barnstable County average: 6.80 pCi/L, based on 10 user-submitted tests across 6 cities in the county. No homeowner readings have been submitted for North Chatham 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+

North Chatham, 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 North Chatham, MA

No homeowner tests have been submitted for North Chatham 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
Osterville	22.1 mi	6.00 pCi/L	1
Sandwich	26.4 mi	10.00 pCi/L	1
Mashpee	27.4 mi	5.00 pCi/L	4
Buzzards Bay	31.2 mi	9.50 pCi/L	2
North Falmouth	34.1 mi	6.00 pCi/L	1
Falmouth	35.2 mi	7.00 pCi/L	1
Plymouth	37.6 mi	7.00 pCi/L	1
Kingston	44.7 mi	4.00 pCi/L	1

Barnstable County Radon Profile

EPA mapping assigns Barnstable 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 Barnstable County average 6.80 pCi/L across 10 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 Barnstable County home regardless of zone or a neighbor's results.

Radon FAQ for North Chatham, MA

What EPA Radon Zone is North Chatham in?

North Chatham and the 02650 zip code are in Barnstable 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 North Chatham?

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

Radon mitigation in North Chatham 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 North Chatham?

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.