Knoxville, PA Radon Levels

Q: What EPA Radon Zone is Knoxville in?

Knoxville is in Tioga County, EPA Zone 1.

Q: How much does radon mitigation cost in Knoxville?

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

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

Knoxville, PA Radon Facts

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

County Tioga County, PA

Zip Code 16928

Located in Tioga County in north-central Pennsylvania, Knoxville sits within the Appalachian Plateau's sedimentary rock formations that characterize much of the region. Testing data for zip code 16928 remains limited, making individual home testing crucial for residents given Pennsylvania's statewide high radon potential from uranium-bearing bedrock and the area's typical basement construction.

9.00

pCi/L area average

Above EPA Action Level

Tioga County average: 9.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Knoxville 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+

Knoxville, PA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Knoxville?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Tioga County Pros

1-800-299-3578 717-283-2136 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Knoxville, PA

No homeowner tests have been submitted for Knoxville 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
Ulysses	16.3 mi	7.67 pCi/L	3
Wellsboro	16.7 mi	9.00 pCi/L	1
Coudersport	29.7 mi	20.00 pCi/L	1
Roulette	39.1 mi	20.00 pCi/L	1
Renovo	46.1 mi	3.00 pCi/L	1
Milan	46.6 mi	7.00 pCi/L	1
Sayre	47.0 mi	5.00 pCi/L	3
Jersey Shore	50.0 mi	15.00 pCi/L	1

Tioga County Radon Profile

Because of its underlying geology, Tioga County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 1 city in Tioga County average 9.00 pCi/L across 1 test — 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 Tioga County home regardless of zone or a neighbor's results.

Radon FAQ for Knoxville, PA

What EPA Radon Zone is Knoxville in?

Knoxville and the 16928 zip code are in Tioga 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 Knoxville?

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

Radon mitigation in Knoxville 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 Knoxville?

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.