Knox, PA Radon Levels

Q: What EPA Radon Zone is Knox in?

Knox is in Clarion County, EPA Zone 1.

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

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

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

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

Knox, PA Radon Facts

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

County Clarion County, PA

Zip Code 16232

Positioned in Clarion County within Pennsylvania's Allegheny Plateau region, Knox is built on sedimentary bedrock formations typical of northwestern Pennsylvania. While comprehensive testing data for zip code 16232 is not currently available, residents should test their homes given Pennsylvania's statewide recognition as a high radon potential area.

12.00

pCi/L area average

Above EPA Action Level

Clarion County average: 12.00 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Knox 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+

Knox, 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 Knox, PA

No homeowner tests have been submitted for Knox 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
Cranberry	8.8 mi	1.00 pCi/L	1
Fryburg	11.6 mi	4.00 pCi/L	1
Parker	12.3 mi	20.00 pCi/L	1
Karns City	18.5 mi	20.00 pCi/L	1
Franklin	20.4 mi	9.00 pCi/L	1
Brookville	23.2 mi	8.00 pCi/L	3
Kittanning	28.3 mi	13.50 pCi/L	2
Grove City	29.7 mi	9.00 pCi/L	2

Clarion County Radon Profile

Clarion 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 2 cities in Clarion County average 12.00 pCi/L across 2 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 Clarion County to test, as levels can differ between neighboring homes.

Radon FAQ for Knox, PA

What EPA Radon Zone is Knox in?

Knox and the 16232 zip code are in Clarion 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 Knox?

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

Radon mitigation in Knox 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 Knox?

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.