Cullowhee, NC Radon Levels

Q: What EPA Radon Zone is Cullowhee in?

Cullowhee is in Jackson County, EPA Zone 2.

Q: How much does radon mitigation cost in Cullowhee?

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

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

Cullowhee, NC Radon Facts

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

County Jackson County, NC

Zip Code 28723

Nestled in Jackson County within North Carolina's Blue Ridge Mountains, Cullowhee sits on ancient crystalline rock formations that can produce variable radon levels. Current testing data for zip code 28723 remains limited, making professional radon testing advisable for mountain residents. This university community features a mix of older Appalachian homes and modern construction, with basement and crawl space foundations common to the mountainous terrain.

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 Cullowhee 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+

Cullowhee, 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 Cullowhee, NC

No homeowner tests have been submitted for Cullowhee yet, so the closest user-submitted readings from neighboring communities are shown below. Radon varies by home — testing is the only way to know your level.

Radon Level	City	Distance	Home Age	Foundation	Submitted
4 pCi/L	Tuckasegee, NC	4.3 mi	0-20 Years	Full Basement	Nov 2024
6 pCi/L	Cashiers, NC	10.5 mi	0-20 Years	Partial Basement	Jun 2025
6 pCi/L	Highlands, NC	12.4 mi	21-50 Years	Full Basement	Jan 2025
4 pCi/L	Highlands, NC	12.4 mi	0-20 Years	No Basement/All Slab	Aug 2023
5 pCi/L	Highlands, NC	12.4 mi	21-50 Years	Full Basement	Aug 2023
3 pCi/L	Highlands, NC	12.4 mi	51-99 Years	No Basement/All Crawl Space	Jul 2020
6 pCi/L	Franklin, NC	14.2 mi	0-20 Years	Full Basement	Mar 2017
4 pCi/L	Lake Toxaway, NC	14.5 mi	—	—	Mar 2026

Readings are drawn from the nearest cities with submitted data. Have a result for Cullowhee? Submit your reading to help your neighbors.

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 Cullowhee, NC

What EPA Radon Zone is Cullowhee in?

Cullowhee and the 28723 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 Cullowhee?

No homeowner radon tests have been submitted for Cullowhee 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 Cullowhee 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 Cullowhee?

Radon mitigation in Cullowhee 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 Cullowhee?

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.

Radon Levels Near Cullowhee, NC

User-submitted radon levels from the cities closest to Cullowhee with recorded test data. Explore nearby communities to compare local readings.

City	Distance	Avg User Level	Submissions
Tuckasegee	4.3 mi	4.00 pCi/L	1
Cashiers	10.5 mi	6.00 pCi/L	1
Highlands	12.4 mi	4.50 pCi/L	4
Franklin	14.2 mi	6.00 pCi/L	1
Lake Toxaway	14.5 mi	4.00 pCi/L	1
Whittier	16.3 mi	4.00 pCi/L	1
Scaly Mountain	17.7 mi	11.00 pCi/L	1
Rosman	19.6 mi	4.00 pCi/L	1