Smithton, PA Radon Levels

Q: What EPA Radon Zone is Smithton in?

Smithton is in Westmoreland County, EPA Zone 1.

Q: How much does radon mitigation cost in Smithton?

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

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

Smithton, PA Radon Facts

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

County Westmoreland County, PA

Zip Code 15479

Found in Westmoreland County within the Pittsburgh Metro area, Smithton sits on Pennsylvania's complex geological foundation of coal measures and limestone that often produces elevated radon readings. Limited testing data for zip code 15479 makes individual home testing crucial for residents. The community's housing stock, including both older construction and newer developments typical of southwestern Pennsylvania, sits in a high-risk radon zone where basement testing is particularly important.

7.50

pCi/L area average

Above EPA Action Level

Westmoreland County average: 7.50 pCi/L, based on 10 user-submitted tests across 8 cities in the county. No homeowner readings have been submitted for Smithton 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+

Smithton, 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 Smithton, PA

No homeowner tests have been submitted for Smithton 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
West Newton	3.8 mi	6.00 pCi/L	1
Irwin	11.4 mi	10.00 pCi/L	1
Mount Pleasant	11.9 mi	7.00 pCi/L	1
Jeannette	13.7 mi	5.00 pCi/L	1
Greensburg	14.7 mi	6.50 pCi/L	2
Mckeesport	14.9 mi	7.00 pCi/L	1
South Park	16.6 mi	7.00 pCi/L	2
Uniontown	18.4 mi	4.00 pCi/L	1

Westmoreland County Radon Profile

The bedrock and soils beneath Westmoreland 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 8 cities in Westmoreland County average 7.50 pCi/L across 10 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 Westmoreland County.

Radon FAQ for Smithton, PA

What EPA Radon Zone is Smithton in?

Smithton and the 15479 zip code are in Westmoreland 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 Smithton?

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

Radon mitigation in Smithton 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 Smithton?

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.