Zionsville, PA Radon Levels

Q: What EPA Radon Zone is Zionsville in?

Zionsville is in Lehigh County, EPA Zone 1.

Q: How much does radon mitigation cost in Zionsville?

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

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

Zionsville, PA Radon Facts

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

County Lehigh County, PA

Zip Code 18092

Located in Lehigh County within the Allentown Metro area, Zionsville sits in Pennsylvania's EPA Zone 1 region where radon testing is strongly recommended. The area's geological foundation of limestone bedrock beneath glacial deposits creates conditions favorable for radon gas accumulation in homes with basements. While comprehensive radon data for Zionsville is currently limited, residents in zip code 18092 should prioritize home testing given the county's elevated radon potential.

7.25

pCi/L area average

Above EPA Action Level

Lehigh County average: 7.25 pCi/L, based on 4 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Zionsville 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+

Zionsville, PA 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 Zionsville?

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

1-800-299-3578 610-255-7504 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Zionsville, PA

No homeowner tests have been submitted for Zionsville 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
Pennsburg	6.1 mi	9.00 pCi/L	1
Center Valley	7.0 mi	11.00 pCi/L	1
Coopersburg	7.6 mi	7.00 pCi/L	1
Breinigsville	8.7 mi	6.00 pCi/L	1
Quakertown	9.5 mi	5.00 pCi/L	1
Gilbertsville	12.1 mi	5.00 pCi/L	1
Hellertown	12.9 mi	13.00 pCi/L	1
Sellersville	13.3 mi	6.00 pCi/L	1

Lehigh County Radon Profile

Because of its underlying geology, Lehigh 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 4 cities in Lehigh County average 7.25 pCi/L across 4 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 Lehigh County home regardless of zone or a neighbor's results.

Radon FAQ for Zionsville, PA

What EPA Radon Zone is Zionsville in?

Zionsville and the 18092 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.

Why are radon readings shown from areas near Zionsville?

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

Radon mitigation in Zionsville 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 Zionsville?

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.