Marion, MA Radon Mitigation and Testing

Q: What EPA Radon Zone is Marion in?

Marion is in Plymouth County, EPA Zone 2.

Q: How much does radon mitigation cost in Marion?

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

Plymouth County

EPA Zone 2

This coastal Plymouth community recorded an average radon level of 1.0 pCi/L based on available testing data. The reading falls well within EPA recommended ranges, reflecting the area's coastal geology and newer construction practices typical of southeastern Massachusetts. Despite favorable conditions, homeowners should maintain regular testing schedules as radon levels can fluctuate seasonally.

Marion, MA Radon Mitigation

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

Marion, MA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Marion Radon Facts

Key details about the radon risk profile for Marion and the 02738 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Plymouth County, MA

Zip Code

02738

Predicted Screening Level

2–4 pCi/L (Zone 2)

Marion and the 02738 zip code are located in Plymouth County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Marion, MA

What EPA Radon Zone is Marion in?

Marion and the 02738 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.

How much does radon mitigation cost in Marion?

Radon mitigation in Marion 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 Marion?

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.

Most Active Radon Markets in Massachusetts

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Littleton	9.40 pCi/L	5
Gloucester	8.40 pCi/L	5
Florence	7.40 pCi/L	5
Douglas	12.00 pCi/L	4
Weymouth	8.50 pCi/L	4
Mashpee	5.00 pCi/L	4
Natick	5.00 pCi/L	4
Worcester	17.67 pCi/L	3
Attleboro	10.00 pCi/L	3
Stoneham	9.67 pCi/L	3
Hopkinton	9.33 pCi/L	3
Medford	8.00 pCi/L	3
Boxford	6.67 pCi/L	3
Reading	5.67 pCi/L	3
Haverhill	5.00 pCi/L	3
Melrose	5.00 pCi/L	3
Somerville	4.33 pCi/L	3
Woburn	19.00 pCi/L	2
Marlborough	13.50 pCi/L	2
Cohasset	11.50 pCi/L	2