Mars Hill, NC Radon Levels

Q: What EPA Radon Zone is Mars Hill in?

Mars Hill is in Madison County, EPA Zone 2.

Q: How much does radon mitigation cost in Mars Hill?

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

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

Mars Hill, NC Radon Facts

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

County Madison County, NC

Zip Code 28754

Nestled in the Blue Ridge Mountains of Madison County within the Asheville metro area, Mars Hill sits where ancient Appalachian bedrock can create variable radon conditions. With limited testing data available for zip code 28754, residents should conduct radon testing in their homes. Mountain geology and elevation changes can produce unexpected radon levels that require individual property assessment.

8.11

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 8.11 pCi/L, based on 9 tests from 7 nearby cities. No readings have been submitted for Mars Hill yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Mars Hill, 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 Mars Hill, NC

No homeowner tests have been submitted for Mars Hill 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
20 pCi/L	Burnsville, NC	13.8 mi	0-20 Years	Full Basement	Dec 2021
10 pCi/L	Swannanoa, NC	17.6 mi	21-50 Years	Full Basement	Jan 2022
7 pCi/L	Black Mountain, NC	22.0 mi	21-50 Years	Full Basement	Nov 2024
8 pCi/L	Black Mountain, NC	22.0 mi	21-50 Years	Full Basement	Feb 2021
4 pCi/L	Black Mountain, NC	22.0 mi	21-50 Years	Full Basement	Jul 2020
10 pCi/L	Bakersville, NC	23.2 mi	51-99 Years	Full Basement	Apr 2021
4 pCi/L	Fairview, NC	23.7 mi	0-20 Years	Full Basement	Jul 2023
6 pCi/L	Candler, NC	23.9 mi	21-50 Years	Full Basement	Oct 2021

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

Madison County Radon Profile

The soils and bedrock of Madison County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Few homeowner tests have been logged inside Madison 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 Madison County to test, as levels can differ between neighboring homes.

Radon FAQ for Mars Hill, NC

What EPA Radon Zone is Mars Hill in?

Mars Hill and the 28754 zip code are in Madison 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 Mars Hill?

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

Radon mitigation in Mars Hill 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 Mars Hill?

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 Mars Hill, NC

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

City	Distance	Avg User Level	Submissions
Burnsville	13.8 mi	20.00 pCi/L	1
Swannanoa	17.6 mi	10.00 pCi/L	1
Black Mountain	22.0 mi	6.33 pCi/L	3
Bakersville	23.2 mi	10.00 pCi/L	1
Fairview	23.7 mi	4.00 pCi/L	1
Candler	23.9 mi	6.00 pCi/L	1