Walnut Bottom, PA Radon Levels

Q: What EPA Radon Zone is Walnut Bottom in?

Walnut Bottom is in Cumberland County, EPA Zone 1.

Q: How much does radon mitigation cost in Walnut Bottom?

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

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

Walnut Bottom, PA Radon Facts

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

County Cumberland County, PA

Zip Code 17266

Located in Cumberland County within the Harrisburg metropolitan area (ZIP 17266), Walnut Bottom sits in the Cumberland Valley where limestone bedrock underlies fertile agricultural soils. Testing data for this small community is currently limited, making individual home assessments particularly valuable for residents. Pennsylvania's limestone geology frequently produces elevated radon levels, and homeowners should prioritize testing regardless of home age or foundation type.

12.56

pCi/L area average

Above EPA Action Level

Cumberland County average: 12.56 pCi/L, based on 9 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Walnut Bottom 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+

Walnut Bottom, 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 Walnut Bottom, PA

No homeowner tests have been submitted for Walnut Bottom 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
Newville	6.9 mi	4.00 pCi/L	1
Carlisle	13.3 mi	11.33 pCi/L	3
Fayetteville	14.0 mi	7.00 pCi/L	3
Orrtanna	14.2 mi	20.00 pCi/L	1
Chambersburg	17.1 mi	10.14 pCi/L	7
Gettysburg	20.1 mi	6.50 pCi/L	2
Fairfield	21.2 mi	7.50 pCi/L	2
Mechanicsburg	22.1 mi	13.75 pCi/L	4

Cumberland County Radon Profile

The bedrock and soils beneath Cumberland County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 4 cities in Cumberland County average 12.56 pCi/L across 9 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Cumberland County.

Radon FAQ for Walnut Bottom, PA

What EPA Radon Zone is Walnut Bottom in?

Walnut Bottom and the 17266 zip code are in Cumberland 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 Walnut Bottom?

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

Radon mitigation in Walnut Bottom 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 Walnut Bottom?

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.