Brockton, MA Radon Levels

Q: What EPA Radon Zone is Brockton in?

Brockton is in Plymouth County, EPA Zone 2.

Q: How much does radon mitigation cost in Brockton?

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

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

Brockton, MA Radon Facts

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

County Plymouth County, MA

Zip Code 02301

As a major city in Plymouth County within the Boston Metro area, Brockton spans zip codes 02301 and 02302, though comprehensive radon testing data is not currently available. The area's diverse housing stock, from historic multi-family buildings to suburban single-family homes, creates varied radon exposure potential across different neighborhoods. Testing is recommended for all residents, particularly those in homes with basements or lower-level living spaces.

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 Brockton 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+

Brockton, 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 Brockton?

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

1-800-299-3578 508-283-1218 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Brockton, MA

No homeowner tests have been submitted for Brockton 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
Abington	4.1 mi	4.00 pCi/L	1
Stoughton	5.4 mi	5.00 pCi/L	1
Hanson	8.1 mi	6.00 pCi/L	1
Braintree	8.9 mi	9.00 pCi/L	1
Weymouth	9.5 mi	15.00 pCi/L	2
East Weymouth	10.5 mi	4.50 pCi/L	2
Pembroke	11.1 mi	5.00 pCi/L	1
Norwell	11.5 mi	20.00 pCi/L	1

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 Brockton, MA

What EPA Radon Zone is Brockton in?

Brockton and the 02301 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 Brockton?

No homeowner radon tests have been submitted for Brockton 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 Brockton 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 Brockton?

Radon mitigation in Brockton 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 Brockton?

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.