Denver, PA Radon Levels

Q: What EPA Radon Zone is Denver in?

Denver is in Lancaster County, EPA Zone 1.

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

No homeowner radon tests have been submitted for Denver yet, so readings from the closest cities and the Lancaster 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 Denver?

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

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

Denver, PA Radon Facts

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

County Lancaster County, PA

Zip Code 17517

Located in Lancaster County's rolling countryside, Denver sits within Pennsylvania's EPA Zone 1, where limestone bedrock and glacial deposits create conditions conducive to radon accumulation. Testing data for this 17517 zip code community remains limited, making professional radon testing essential for homeowners. Given the county's geological characteristics and the EPA's high radon potential designation, residents should prioritize baseline testing regardless of home age or foundation type.

9.00

pCi/L area average

Above EPA Action Level

Lancaster County average: 9.00 pCi/L, based on 15 user-submitted tests across 9 cities in the county. No homeowner readings have been submitted for Denver 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+

Denver, 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 Denver, PA

No homeowner tests have been submitted for Denver 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
Ephrata	5.1 mi	10.33 pCi/L	3
Lititz	10.3 mi	11.50 pCi/L	2
Reading	11.3 mi	13.00 pCi/L	1
Morgantown	12.5 mi	8.00 pCi/L	1
Manheim	16.4 mi	5.00 pCi/L	2
Lancaster	16.9 mi	18.00 pCi/L	1
Mohrsville	18.0 mi	15.00 pCi/L	1
Elverson	18.1 mi	16.00 pCi/L	1

Lancaster County Radon Profile

Lancaster County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 9 cities in Lancaster County average 9.00 pCi/L across 15 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Lancaster County to test, as levels can differ between neighboring homes.

Radon FAQ for Denver, PA

What EPA Radon Zone is Denver in?

Denver and the 17517 zip code are in Lancaster 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 Denver?

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

Radon mitigation in Denver 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 Denver?

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.