Coplay, PA Radon Levels

Q: What EPA Radon Zone is Coplay in?

Coplay is in Lehigh County, EPA Zone 1.

Q: Why are radon readings shown from areas near Coplay?

No homeowner radon tests have been submitted for Coplay yet, so readings from the closest cities and the Lehigh County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Coplay?

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

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

Coplay, PA Radon Facts

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

County Lehigh County, PA

Zip Code 18037

Located in Lehigh County within the Allentown metropolitan area, Coplay sits in EPA Zone 1, reflecting high radon potential throughout the region. While specific testing data for this community is limited, Pennsylvania's limestone geology and typical basement construction warrant homeowner attention to radon risks. The area's older housing stock and below-grade living spaces can provide pathways for radon entry and accumulation.

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 Coplay 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+

Coplay, 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 Coplay?

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 Coplay, PA

No homeowner tests have been submitted for Coplay 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	7.4 mi	14.00 pCi/L	1
Slatington	7.8 mi	5.00 pCi/L	1
Center Valley	9.8 mi	11.00 pCi/L	1
Nazareth	10.6 mi	20.00 pCi/L	2
Hellertown	10.8 mi	13.00 pCi/L	1
Breinigsville	11.7 mi	6.00 pCi/L	1
Coopersburg	12.5 mi	7.00 pCi/L	1
Easton	13.3 mi	12.33 pCi/L	6

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 Coplay, PA

What EPA Radon Zone is Coplay in?

Coplay and the 18037 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 Coplay?

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

Radon mitigation in Coplay 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 Coplay?

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.