Portage, PA Radon Levels

Q: What EPA Radon Zone is Portage in?

Portage is in Cambria County, EPA Zone 2.

Q: How much does radon mitigation cost in Portage?

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

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

Portage, PA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Cambria County, PA

Zip Code 15946

Nestled in Cambria County's Appalachian foothills, Portage lies in a region where coal-bearing rock formations and fractured bedrock can influence radon levels. Since comprehensive testing data isn't available for zip code 15946, homeowners should prioritize professional radon testing. The area's mix of older mining-era homes and newer construction creates varied foundation types that can affect radon entry patterns.

7.33

pCi/L area average

Above EPA Action Level

Cambria County average: 7.33 pCi/L, based on 3 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Portage 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+

Portage, 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 Portage, PA

No homeowner tests have been submitted for Portage 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
Duncansville	10.9 mi	3.00 pCi/L	1
Hollidaysburg	14.6 mi	7.00 pCi/L	1
Johnstown	14.7 mi	7.33 pCi/L	3
Altoona	15.6 mi	6.00 pCi/L	2
Martinsburg	17.1 mi	15.00 pCi/L	1
Schellsburg	22.4 mi	20.00 pCi/L	1
James Creek	23.4 mi	20.00 pCi/L	1
Blairsville	33.0 mi	15.00 pCi/L	1

Cambria County Radon Profile

EPA mapping assigns Cambria County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Cambria County average 7.33 pCi/L across 3 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 Cambria County home regardless of zone or a neighbor's results.

Radon FAQ for Portage, PA

What EPA Radon Zone is Portage in?

Portage and the 15946 zip code are in Cambria County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Portage?

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

Radon mitigation in Portage 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 Portage?

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.