Carlisle, MA Radon Levels

Q: What EPA Radon Zone is Carlisle in?

Carlisle is in Middlesex County, EPA Zone 1.

Q: How much does radon mitigation cost in Carlisle?

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

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

Carlisle, MA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Middlesex County, MA

Zip Code 01741

Located in Middlesex County northwest of Boston, Carlisle's colonial-era homes and newer developments sit atop New England's complex glacial geology. Testing data remains limited for this affluent community in zip code 01741, making individual home testing essential for residents to understand their property's radon profile.

7.28

pCi/L area average

Above EPA Action Level

Middlesex County average: 7.28 pCi/L, based on 90 user-submitted tests across 46 cities in the county. No homeowner readings have been submitted for Carlisle 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+

Carlisle, MA Radon Mitigation

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

Need Radon Mitigation or Testing in Carlisle?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Middlesex County Pros

1-800-299-3578 978-208-3171 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Carlisle, MA

No homeowner tests have been submitted for Carlisle 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
Chelmsford	4.3 mi	11.50 pCi/L	4
North Billerica	4.5 mi	6.50 pCi/L	2
Concord	5.1 mi	4.00 pCi/L	1
Westford	6.0 mi	12.67 pCi/L	3
Acton	6.1 mi	20.00 pCi/L	1
Littleton	7.0 mi	9.40 pCi/L	5
Burlington	7.8 mi	5.50 pCi/L	2
Lowell	8.1 mi	3.00 pCi/L	2

Middlesex County Radon Profile

The bedrock and soils beneath Middlesex County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 46 cities in Middlesex County average 7.28 pCi/L across 90 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 Middlesex County.

Radon FAQ for Carlisle, MA

What EPA Radon Zone is Carlisle in?

Carlisle and the 01741 zip code are in Middlesex County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Carlisle?

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

Radon mitigation in Carlisle 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 Carlisle?

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.