Swannanoa, NC Radon Mitigation and Testing

Q: What is the average radon level in Swannanoa, NC?

Based on 1 user-submitted tests, the average radon level is 10.00 pCi/L.

Q: What EPA Radon Zone is Swannanoa in?

Swannanoa is in Buncombe County, EPA Zone 1.

Q: How much does radon mitigation cost in Swannanoa?

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

Avg: 10.00 pCi/L

Buncombe County

EPA Zone 1

1 user test

Set in Buncombe County within the Asheville Metro area, Swannanoa rests in the Blue Ridge Mountains atop metamorphic bedrock including gneiss and schist formations. The valley community features mountain homes and suburban developments, many with walkout basements taking advantage of sloped terrain. Testing shows an average radon level of 10.0 pCi/L in zip code 28778, significantly exceeding EPA guidelines and warranting immediate mitigation consideration.

10.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Swannanoa, NC. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Swannanoa, NC Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Swannanoa, NC Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Swannanoa, North Carolina Radon Levels

User-submitted radon test readings from homes in the Swannanoa area.

Radon Level	City	Home Age	Foundation	Submitted
10 pCi/L	Swannanoa, NC	21-50 Years	Full Basement	Jan 2022

Have a radon test result for Swannanoa? Submit your reading to help other homeowners.

Swannanoa Radon Facts

Key details about the radon risk profile for Swannanoa and the 28778 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Buncombe County, NC

Zip Code

28778

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

10.00 pCi/L

User Tests Submitted

Swannanoa and the 28778 zip code are located in Buncombe County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Swannanoa, NC

What is the average radon level in Swannanoa, NC?

Based on 1 user-submitted test, the average radon level in Swannanoa is 10.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Swannanoa in?

Swannanoa and the 28778 zip code are in Buncombe 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.

How much does radon mitigation cost in Swannanoa?

Radon mitigation in Swannanoa 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 Swannanoa?

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.

Most Active Radon Markets in North Carolina

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Murphy	12.83 pCi/L	6
Blowing Rock	10.17 pCi/L	6
Brevard	7.50 pCi/L	4
Cary	5.00 pCi/L	4
Highlands	4.50 pCi/L	4
Mooresville	4.00 pCi/L	4
Banner Elk	9.33 pCi/L	3
Charlotte	7.33 pCi/L	3
Denver	4.33 pCi/L	3
Hendersonville	9.00 pCi/L	2
Wake Forest	4.50 pCi/L	2
Apex	3.50 pCi/L	2
Huntersville	3.50 pCi/L	2
Raleigh	9.00 pCi/L	1
Fayetteville	5.00 pCi/L	1
Waxhaw	4.00 pCi/L	1
Chapel Hill	3.00 pCi/L	1
Clayton	No submissions	0
Fuquay Varina	No submissions	0
Holly Springs	No submissions	0