Northampton, PA Radon Levels

Q: What EPA Radon Zone is Northampton in?

Northampton is in Northampton County, EPA Zone 1.

Q: How much does radon mitigation cost in Northampton?

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

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

Northampton, PA Radon Facts

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

County Northampton County, PA

Zip Code 18067

Part of the Allentown Metro area in eastern Pennsylvania's Northampton County, this community sits on limestone and shale bedrock that can contribute to radon accumulation in area homes. Testing data remains limited for zip code 18067, making professional radon measurement essential for residents seeking to understand their individual exposure risk. Pennsylvania's complex sedimentary geology creates variable radon conditions that can differ significantly between neighboring properties, emphasizing the importance of home-specific testing.

13.64

pCi/L area average

Above EPA Action Level

Northampton County average: 13.64 pCi/L, based on 11 user-submitted tests across 5 cities in the county. No homeowner readings have been submitted for Northampton 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+

Northampton, PA 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 Northampton, PA

No homeowner tests have been submitted for Northampton 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
Bath	5.6 mi	14.00 pCi/L	1
Slatington	7.3 mi	5.00 pCi/L	1
Nazareth	9.3 mi	20.00 pCi/L	2
Center Valley	11.6 mi	11.00 pCi/L	1
Hellertown	11.8 mi	13.00 pCi/L	1
Easton	12.7 mi	12.33 pCi/L	6
Breinigsville	13.5 mi	6.00 pCi/L	1
Kunkletown	13.8 mi	20.00 pCi/L	1

Northampton County Radon Profile

Because of its underlying geology, Northampton County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 5 cities in Northampton County average 13.64 pCi/L across 11 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 Northampton County home regardless of zone or a neighbor's results.

Radon FAQ for Northampton, PA

What EPA Radon Zone is Northampton in?

Northampton and the 18067 zip code are in Northampton 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 Northampton?

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

Radon mitigation in Northampton 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 Northampton?

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.