Sapphire, NC Radon Levels

Q: What EPA Radon Zone is Sapphire in?

Sapphire is in Jackson County, EPA Zone 2.

Q: How much does radon mitigation cost in Sapphire?

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

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

Sapphire, NC Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Jackson County, NC

Zip Code 28774

Perched in the Blue Ridge Mountains of Jackson County, Sapphire's high elevation and granitic bedrock create geological conditions that can produce elevated radon levels in western North Carolina. The mountain community features a mix of seasonal cabins and year-round homes, many built on crawl space or basement foundations that can trap radon gas. With testing data limited for the 28774 zip code, residents should conduct home testing to assess their individual radon exposure risk.

4.67

pCi/L area average

Above EPA Action Level

Jackson County average: 4.67 pCi/L, based on 3 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Sapphire 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+

Sapphire, 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 Sapphire, NC

No homeowner tests have been submitted for Sapphire 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
Cashiers	5.3 mi	6.00 pCi/L	1
Lake Toxaway	7.2 mi	4.00 pCi/L	1
Rosman	11.5 mi	4.00 pCi/L	1
Highlands	12.1 mi	4.50 pCi/L	4
Tuckasegee	14.0 mi	4.00 pCi/L	1
Brevard	18.2 mi	7.50 pCi/L	4
Scaly Mountain	18.6 mi	11.00 pCi/L	1
Pisgah Forest	23.0 mi	20.00 pCi/L	1

Jackson County Radon Profile

The soils and bedrock of Jackson County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 3 cities in Jackson County average 4.67 pCi/L across 3 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Jackson County to test, as levels can differ between neighboring homes.

Radon FAQ for Sapphire, NC

What EPA Radon Zone is Sapphire in?

Sapphire and the 28774 zip code are in Jackson County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Sapphire?

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

Radon mitigation in Sapphire 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 Sapphire?

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.