Duncannon, PA Radon Levels

Q: What EPA Radon Zone is Duncannon in?

Duncannon is in Perry County, EPA Zone 1.

Q: How much does radon mitigation cost in Duncannon?

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

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

Duncannon, PA Radon Facts

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

County Perry County, PA

Zip Code 17020

Nestled along the Susquehanna River in Perry County, Duncannon sits within EPA Zone 1 reflecting Pennsylvania's high radon potential. Testing data for this Harrisburg Metro community in zip code 17020 remains limited, though the area's sandstone and shale geology typically generates elevated readings. Homeowners should conduct radon testing given the region's consistently high levels.

12.53

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 12.53 pCi/L, based on 17 tests from 10 nearby cities. No readings have been submitted for Duncannon yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Duncannon, 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 Duncannon, PA

No homeowner tests have been submitted for Duncannon 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
Enola	9.7 mi	20.00 pCi/L	1
Harrisburg	13.8 mi	13.00 pCi/L	1
Mechanicsburg	14.8 mi	13.75 pCi/L	4
Carlisle	16.4 mi	11.33 pCi/L	3
Newville	24.6 mi	4.00 pCi/L	1
Annville	26.8 mi	14.00 pCi/L	1
Elizabethtown	29.3 mi	9.67 pCi/L	3
Dover	29.6 mi	13.00 pCi/L	1

Perry County Radon Profile

Because of its underlying geology, Perry County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Direct test data for Perry County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Perry County home regardless of zone or a neighbor's results.

Radon FAQ for Duncannon, PA

What EPA Radon Zone is Duncannon in?

Duncannon and the 17020 zip code are in Perry 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 Duncannon?

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

Radon mitigation in Duncannon 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 Duncannon?

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.