Fontana Dam, NC Radon Levels

Q: What EPA Radon Zone is Fontana Dam in?

Fontana Dam is in Graham County, EPA Zone 2.

Q: How much does radon mitigation cost in Fontana Dam?

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

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

Fontana Dam, NC Radon Facts

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

County Graham County, NC

Zip Code 28733

Situated in Graham County within North Carolina's Appalachian highlands, Fontana Dam sits among ancient metamorphic and granite formations that can produce variable radon levels. Testing data for this mountainous community in zip code 28733 remains limited, making individual home assessment particularly important. The area's unique geology, combined with typical mountain home construction, creates conditions where radon testing should be a priority for residents.

15.00

pCi/L area average

Above EPA Action Level

Graham County average: 15.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Fontana Dam 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+

Fontana Dam, 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 Fontana Dam, NC

No homeowner tests have been submitted for Fontana Dam 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
15 pCi/L	Robbinsville, NC	6.7 mi	0-20 Years	Partial Basement	Dec 2020
20 pCi/L	Bryson City, NC	19.2 mi	0-20 Years	Full Basement	Aug 2020
13 pCi/L	Murphy, NC	24.9 mi	—	Full Basement	Jun 2022
20 pCi/L	Murphy, NC	24.9 mi	0-20 Years	Full Basement	Mar 2021
6 pCi/L	Murphy, NC	24.9 mi	0-20 Years	Full Basement	Oct 2020
11 pCi/L	Murphy, NC	24.9 mi	21-50 Years	Partial Basement	Nov 2018
14 pCi/L	Murphy, NC	24.9 mi	0-20 Years	Full Basement	Dec 2015
20 pCi/L	Hayesville, NC	26.4 mi	21-50 Years	Full Basement	Nov 2020

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

Graham County Radon Profile

EPA mapping assigns Graham County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Graham County average 15.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Graham County home regardless of zone or a neighbor's results.

Radon FAQ for Fontana Dam, NC

What EPA Radon Zone is Fontana Dam in?

Fontana Dam and the 28733 zip code are in Graham 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 Fontana Dam?

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

Radon mitigation in Fontana Dam 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 Fontana Dam?

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 Fontana Dam, NC

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

City	Distance	Avg User Level	Submissions
Robbinsville	6.7 mi	15.00 pCi/L	1
Topton	16.2 mi	16.00 pCi/L	1
Bryson City	19.2 mi	20.00 pCi/L	1
Murphy	24.9 mi	12.83 pCi/L	6