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Semora, NC Radon Levels

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


Semora, NC Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
County Person County, NC
Zip Code 27343

Nestled in Person County within the Piedmont region of North Carolina, Semora sits on crystalline bedrock and weathered granite soils that typically produce moderate radon levels. The area's housing includes older farmhouses with partial basements alongside newer construction, creating varied foundation types across the community. Testing data remains sparse in zip code 27343, making individual radon testing important for residents in this Durham Metro area to understand their specific exposure levels.

9.00
pCi/L area average
Above EPA Action Level

Person 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 Semora itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Semora, NC 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 Semora, NC

No homeowner tests have been submitted for Semora 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.

CityDistanceAvg User LevelReadings
Yanceyville 16.3 mi 4.00 pCi/L 1
Rougemont 21.6 mi 9.00 pCi/L 1
Oxford 29.5 mi 4.00 pCi/L 2
Efland 29.5 mi 5.00 pCi/L 1
Stem 29.9 mi 3.00 pCi/L 1
Hillsborough 30.1 mi 3.00 pCi/L 1
Gibsonville 37.9 mi 6.00 pCi/L 1
Chapel Hill 41.1 mi 3.00 pCi/L 1

Person County Radon Profile

The EPA maps Person County as Radon Zone 3, the lowest predicted classification, with modeled indoor screening levels under 2 pCi/L. Homeowner-submitted tests from 1 city in Person 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 Person County home regardless of zone or a neighbor's results.

Radon FAQ for Semora, NC

What EPA Radon Zone is Semora in?
Semora and the 27343 zip code are in Person County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
Why are radon readings shown from areas near Semora?
No homeowner radon tests have been submitted for Semora yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Person County average—are the best available indicator of local conditions until Semora 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 Semora?
Radon mitigation in Semora 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 Semora?
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.