Allentown, PA Radon Mitigation and Testing

Q: What EPA Radon Zone is Allentown in?

Allentown is in Lehigh County, EPA Zone 1.

Q: How much does radon mitigation cost in Allentown?

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

Lehigh County

EPA Zone 1

As the largest city in Lehigh County and center of the Allentown Metro area, this community sits within Pennsylvania's high radon potential zone. While comprehensive testing data across the city's multiple zip codes remains limited, the area's geological foundation of limestone and shale formations creates favorable conditions for radon production. Professional testing is strongly recommended for all residential properties throughout the greater Allentown area.

Allentown, PA Radon Mitigation

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

Allentown, PA Radon Testing

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

Allentown Radon Facts

Key details about the radon risk profile for Allentown and the 18101 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lehigh County, PA

Zip Code

18101

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Allentown and the 18101 zip code are located in Lehigh County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Allentown, PA

What EPA Radon Zone is Allentown in?

Allentown and the 18101 zip code are in Lehigh 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.

How much does radon mitigation cost in Allentown?

Radon mitigation in Allentown 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 Allentown?

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 Pennsylvania

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

City	Avg User Radon Level	Submissions
State College	10.00 pCi/L	14
Chambersburg	10.14 pCi/L	7
Easton	12.33 pCi/L	6
Butler	12.40 pCi/L	5
Dingmans Ferry	5.80 pCi/L	5
Hanover	14.00 pCi/L	4
Mechanicsburg	13.75 pCi/L	4
Greenville	10.75 pCi/L	4
Pittsburgh	9.25 pCi/L	4
Albrightsville	9.00 pCi/L	4
Philadelphia	8.00 pCi/L	4
Lackawaxen	15.33 pCi/L	3
York	11.67 pCi/L	3
Elizabethtown	9.67 pCi/L	3
Johnstown	7.33 pCi/L	3
West Chester	6.67 pCi/L	3
Danville	5.67 pCi/L	3
Springfield	5.67 pCi/L	3
East Stroudsburg	5.00 pCi/L	3
Langhorne	4.67 pCi/L	3