Marshfield, MA Radon Levels

Q: What EPA Radon Zone is Marshfield in?

Marshfield is in Plymouth County, EPA Zone 2.

Q: How much does radon mitigation cost in Marshfield?

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

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

Marshfield, MA Radon Facts

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

County Plymouth County, MA

Zip Code 02050

Coastal Plymouth County community Marshfield, within the Boston Metro area, sits on glacial outwash deposits and marine sediments that typically produce lower radon levels along Massachusetts' South Shore. Testing data for the 02050 zip code is currently limited, though the area's sandy soils and proximity to the Atlantic Ocean generally result in reduced radon concentrations. Despite the favorable geological conditions, homeowners should still conduct baseline testing to ensure safe indoor air quality.

7.50

pCi/L area average

Above EPA Action Level

Plymouth County average: 7.50 pCi/L, based on 8 user-submitted tests across 7 cities in the county. No homeowner readings have been submitted for Marshfield 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+

Marshfield, 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 Marshfield, MA

No homeowner tests have been submitted for Marshfield 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
Pembroke	6.2 mi	5.00 pCi/L	1
Norwell	7.3 mi	20.00 pCi/L	1
Kingston	8.0 mi	4.00 pCi/L	1
Hanson	9.0 mi	6.00 pCi/L	1
Cohasset	10.9 mi	11.50 pCi/L	2
Hingham	12.8 mi	7.00 pCi/L	2
Abington	13.1 mi	4.00 pCi/L	1
East Weymouth	13.5 mi	4.50 pCi/L	2

Plymouth County Radon Profile

The soils and bedrock of Plymouth County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 7 cities in Plymouth County average 7.50 pCi/L across 8 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Plymouth County to test, as levels can differ between neighboring homes.

Radon FAQ for Marshfield, MA

What EPA Radon Zone is Marshfield in?

Marshfield and the 02050 zip code are in Plymouth 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 Marshfield?

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

Radon mitigation in Marshfield 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 Marshfield?

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.