Southport, NC Radon Levels

Q: What EPA Radon Zone is Southport in?

Southport is in Brunswick County, EPA Zone 3.

Q: What EPA radon zones surround Southport, NC?

Southport sits in Brunswick 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 Southport?

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

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

Southport, NC Radon Facts

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

County Brunswick County, NC

Zip Code 28461

This historic coastal town in Brunswick County sits on marine sediments and sandy soils typical of North Carolina's Cape Fear region. With testing data for zip code 28461 still being collected, homeowners should consider radon testing despite the coastal location's typically lower geological radon potential.

Southport, NC Radon Mitigation

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

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EPA Radon Zones Near Southport, NC

No user-submitted radon readings are available for Southport 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
Wilmington	19.9 mi	New Hanover County	Zone 3
Wrightsville Beach	22.6 mi	New Hanover County	Zone 3
Ocean Isle Beach	23.2 mi	Brunswick County	Zone 3
Delco	25.5 mi	Columbus County	Zone 3
Castle Hayne	25.8 mi	New Hanover County	Zone 3
Ash	27.8 mi	Brunswick County	Zone 3
Sunset Beach	28.3 mi	Brunswick County	Zone 3
Riegelwood	29.3 mi	Columbus County	Zone 3

Brunswick County Radon Profile

Local geology places Brunswick County in EPA Radon Zone 3, where predicted indoor radon averages fall below 2 pCi/L — though no county is risk-free. Few homeowner tests have been logged inside Brunswick County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Brunswick County to test, as levels can differ between neighboring homes.

Radon FAQ for Southport, NC

What EPA Radon Zone is Southport in?

Southport and the 28461 zip code are in Brunswick 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 Southport, NC?

Southport sits in Brunswick 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 Southport?

Radon mitigation in Southport 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 Southport?

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.