Swansea, MA Radon Levels

Q: What EPA Radon Zone is Swansea in?

Swansea is in Bristol County, EPA Zone 2.

Q: How much does radon mitigation cost in Swansea?

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

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

Swansea, MA Radon Facts

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

County Bristol County, MA

Zip Code 02777

Located in Bristol County within the Providence Metro area, Swansea sits on glacial till deposits over granite and schist bedrock formations. The southeastern Massachusetts community features colonial-era homes and modern developments, predominantly with full basements characteristic of New England construction. Testing data for radon levels in zip code 02777 remains incomplete, making individual home testing advisable for accurate radon assessment.

7.53

pCi/L area average

Above EPA Action Level

Bristol County average: 7.53 pCi/L, based on 15 user-submitted tests across 11 cities in the county. No homeowner readings have been submitted for Swansea 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+

Swansea, 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 Swansea, MA

No homeowner tests have been submitted for Swansea 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
Somerset	2.6 mi	4.00 pCi/L	1
Fall River	4.7 mi	4.50 pCi/L	2
Rehoboth	7.5 mi	4.00 pCi/L	1
Attleboro	13.4 mi	10.00 pCi/L	3
North Dartmouth	13.6 mi	10.00 pCi/L	1
Westport	13.9 mi	4.00 pCi/L	1
Norton	15.6 mi	5.00 pCi/L	1
Acushnet	16.0 mi	11.00 pCi/L	1

Bristol County Radon Profile

EPA mapping assigns Bristol 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 11 cities in Bristol County average 7.53 pCi/L across 15 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 Bristol County home regardless of zone or a neighbor's results.

Radon FAQ for Swansea, MA

What EPA Radon Zone is Swansea in?

Swansea and the 02777 zip code are in Bristol 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 Swansea?

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

Radon mitigation in Swansea 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 Swansea?

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.