Clarendon, NC Radon Levels

Q: What EPA Radon Zone is Clarendon in?

Clarendon is in Columbus County, EPA Zone 3.

Q: What EPA radon zones surround Clarendon, NC?

Clarendon sits in Columbus County, which the EPA classifies as Radon Zone 3. Among the nearby communities listed above, 8 in Zone 3 (low risk, under 2 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.

Q: How much does radon mitigation cost in Clarendon?

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

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

Clarendon, NC Radon Facts

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

County Columbus County, NC

Zip Code 28432

Nestled in Columbus County near North Carolina's coastal plain, Clarendon typically sees lower radon levels due to sandy soils and the area's EPA Zone 3 classification. Testing data for the 28432 zip code area is currently limited, though the region's geological conditions suggest moderate radon potential. Residents should still consider testing, as individual properties can experience elevated levels depending on local soil composition and foundation characteristics.

Clarendon, NC Radon Mitigation

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EPA Radon Zones Near Clarendon, NC

No user-submitted radon readings are available for Clarendon or its immediate area yet. The table below shows the EPA radon zone — a county-level prediction of radon risk — for nearby communities. Radon still varies from home to home, so testing is the only way to confirm your level.

City	Distance	County	EPA Radon Zone
Ash	16.6 mi	Brunswick County	Zone 3
Longwood	17.2 mi	Brunswick County	Zone 3
Evergreen	18.5 mi	Columbus County	Zone 3
Calabash	21.7 mi	Brunswick County	Zone 3
Clarkton	23.8 mi	Bladen County	Zone 3
Orrum	24.2 mi	Robeson County	Zone 3
Sunset Beach	24.6 mi	Brunswick County	Zone 3
Shallotte	25.2 mi	Brunswick County	Zone 3

Columbus County Radon Profile

The EPA maps Columbus County as Radon Zone 3, the lowest predicted classification, with modeled indoor screening levels under 2 pCi/L. Direct test data for Columbus County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Columbus County home regardless of zone or a neighbor's results.

Radon FAQ for Clarendon, NC

What EPA Radon Zone is Clarendon in?

Clarendon and the 28432 zip code are in Columbus 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.

What EPA radon zones surround Clarendon, NC?

Clarendon sits in Columbus County, which the EPA classifies as Radon Zone 3. Among the nearby communities listed above, 8 in Zone 3 (low risk, under 2 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.

How much does radon mitigation cost in Clarendon?

Radon mitigation in Clarendon 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 Clarendon?

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.