Carrboro, NC Radon Levels

Q: What EPA Radon Zone is Carrboro in?

Carrboro is in Orange County, EPA Zone 3.

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

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

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

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

Carrboro, NC Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Orange County, NC

Zip Code 27510

Adjacent to Chapel Hill in Orange County, Carrboro is part of the Durham Metro area where Piedmont geology creates moderate radon potential from crystalline bedrock formations. Testing data for zip code 27510 remains limited, making professional radon assessment important for this university community's residents. The area's mix of historic homes and newer construction may show varying radon patterns depending on foundation types and local geological variations.

3.67

pCi/L area average

Below EPA Action Level

Orange County average: 3.67 pCi/L, based on 3 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Carrboro 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+

Carrboro, 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 Carrboro, NC

No homeowner tests have been submitted for Carrboro 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
Chapel Hill	2.6 mi	3.00 pCi/L	1
Hillsborough	11.8 mi	3.00 pCi/L	1
Efland	14.0 mi	5.00 pCi/L	1
Cary	18.2 mi	5.00 pCi/L	4
Apex	18.8 mi	3.50 pCi/L	2
Raleigh	25.2 mi	9.00 pCi/L	1
Rougemont	25.3 mi	9.00 pCi/L	1
Stem	28.9 mi	3.00 pCi/L	1

Orange County Radon Profile

Orange County is classified as EPA Radon Zone 3, the lowest predicted-risk tier, with modeled indoor screening averages below 2 pCi/L. Homeowner-submitted tests from 3 cities in Orange County average 3.67 pCi/L across 3 tests — below the EPA's 4 pCi/L action level, though radon varies sharply from home to home. 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 Orange County.

Radon FAQ for Carrboro, NC

What EPA Radon Zone is Carrboro in?

Carrboro and the 27510 zip code are in Orange 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 Carrboro?

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

Radon mitigation in Carrboro 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 Carrboro?

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.