Zirconia, NC Radon Levels

Q: What EPA Radon Zone is Zirconia in?

Zirconia is in Henderson County, EPA Zone 1.

Q: How much does radon mitigation cost in Zirconia?

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

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

Zirconia, NC Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Henderson County, NC

Zip Code 28790

Positioned in Henderson County within the scenic Asheville Metro area, Zirconia falls within North Carolina's EPA Zone 1 designation for elevated radon potential. The region's crystalline bedrock and mountain geology create conditions where radon can accumulate in homes throughout zip code 28790. With testing data currently limited, residents are encouraged to test their homes to assess radon levels in this mountain community.

9.00

pCi/L area average

Above EPA Action Level

Henderson County average: 9.00 pCi/L, based on 2 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Zirconia 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+

Zirconia, 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 Zirconia, NC

No homeowner tests have been submitted for Zirconia 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
Hendersonville	8.9 mi	9.00 pCi/L	2
Pisgah Forest	12.4 mi	20.00 pCi/L	1
Brevard	16.0 mi	7.50 pCi/L	4
Mill Spring	18.9 mi	4.00 pCi/L	1
Rosman	21.1 mi	4.00 pCi/L	1
Fairview	21.7 mi	4.00 pCi/L	1
Lake Lure	22.5 mi	10.00 pCi/L	1
Candler	26.1 mi	6.00 pCi/L	1

Henderson County Radon Profile

The bedrock and soils beneath Henderson County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Henderson County average 9.00 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. 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 Henderson County.

Radon FAQ for Zirconia, NC

What EPA Radon Zone is Zirconia in?

Zirconia and the 28790 zip code are in Henderson County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Zirconia?

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

Radon mitigation in Zirconia 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 Zirconia?

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.