Northbridge, MA Radon Levels

Q: What EPA Radon Zone is Northbridge in?

Northbridge is in Worcester County, EPA Zone 1.

Q: How much does radon mitigation cost in Northbridge?

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

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

Northbridge, MA Radon Facts

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

County Worcester County, MA

Zip Code 01534

Situated in Worcester County along the Blackstone River valley, Northbridge's mix of historic mill town housing and newer residential developments sits above New England's granite bedrock. Testing data for the 01534 zip code area remains limited, making individual home testing crucial for residents. Given Massachusetts' geological radon potential and the prevalence of basement foundations, homeowners should conduct comprehensive radon measurements.

9.12

pCi/L area average

Above EPA Action Level

Worcester County average: 9.12 pCi/L, based on 41 user-submitted tests across 28 cities in the county. No homeowner readings have been submitted for Northbridge 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+

Northbridge, 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 Northbridge, MA

No homeowner tests have been submitted for Northbridge 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
Whitinsville	2.4 mi	7.00 pCi/L	1
South Grafton	2.6 mi	13.00 pCi/L	1
Upton	3.3 mi	7.00 pCi/L	1
Grafton	3.9 mi	11.00 pCi/L	1
Uxbridge	5.3 mi	16.00 pCi/L	1
Hopedale	6.3 mi	7.00 pCi/L	1
Millbury	6.4 mi	4.00 pCi/L	1
Milford	6.6 mi	5.00 pCi/L	2

Worcester County Radon Profile

The bedrock and soils beneath Worcester 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 28 cities in Worcester County average 9.12 pCi/L across 41 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 Worcester County.

Radon FAQ for Northbridge, MA

What EPA Radon Zone is Northbridge in?

Northbridge and the 01534 zip code are in Worcester 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 Northbridge?

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

Radon mitigation in Northbridge 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 Northbridge?

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.