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Radon in Hendersonville, North Carolina

EPA puts Henderson County, where Hendersonville is, in Zone 1, its highest radon zone, and only 10 radon tests from it are on file with CDC (2022). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

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  • Share at 4+ pCi/L

    42.6%

    19.4 pts above NC

    Henderson
    42.6%
    NC
    23.2%

    Henderson, 6th of 73 in NC, 2007 to 2016

  • Median result

    3.3pCi/L

    Below action level

    Henderson
    3.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of Henderson's tests, 2007 to 2016

  • Nearest county

    31.2%

    Polk, 17 miles

    Polk
    31.2%
    Henderson
    42.6%

    616 tests, 2007 to 2016

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    Henderson, where Hendersonville is

  • Tests reported

    4,126

    In Henderson

    Henderson
    4,126
    Polk
    616

    Reported to CDC before any fix, 2007 to 2016

Read a result for Hendersonville

Starts at Henderson County's median, 3.3 pCi/L

3.3pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 3.3 pCi/L

Between 2 and 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Henderson County's median reported result, 2007 to 2016.

Interpret this readingWhat a fix costs

The data

Hendersonville, What is published

What is published for Hendersonville

Information:

Every figure for Hendersonville is a county's

Radon data is published by county, not by city, so for Hendersonville it is Henderson County's: its EPA zone (Zone 1) and the 10 tests reported to CDC for 2022. Only a test tells you about one home.

Hendersonville covers 7.4 square miles of land, all of it in Henderson County. About 15,867 people live there, 2,142 to the square mile.

Hendersonville, Counties

The county Hendersonville lies in

Measured

Henderson County's EPA zone and the figures CDC publishes for it, 2022.

Henderson CountyZone 1Highest predicted potential

40.0%
Reported tests at or above 4 pCi/L
2.0 pCi/L
Median reported result
10 tests
Tests reported to CDC
4
Annual years on file

Henderson County ranks 6th of 73 North Carolina counties with 30 or more tests for that period, 16.8 points above the 23.2% pooled across North Carolina's counties, 4.2 points above the national pool of 35.8%.

The counties nearest Hendersonville with a CDC figure for 2007 to 2016, laboratory, measured from the middle of the city: Polk County (17 miles, 31.2% of 616 tests), Buncombe County (20 miles, 30.3% of 6,670 tests) and Transylvania County (21 miles, 48.1% of 3,996 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 14.8% to 48.1%; the farthest of them, Madison County, is 39 miles away at 14.8%.

No business in the directory gives Hendersonville as its address; the North Carolina list covers it. North Carolina's other cities with a page of their own: Raleigh, Asheville, Charlotte and Boone.

The counties around Hendersonville

By distance from the middle of Hendersonville; counties with 30 or more tests.

Nearest counties to Hendersonville with 30 or more tests
CountyDistanceTestsAt or above 4 pCi/LMedian
Polk County17 mi61631.2%2.4 pCi/L
Buncombe County20 mi6,67030.3%2.4 pCi/L
Transylvania County21 mi3,99648.1%3.7 pCi/L
Rutherford County31 mi48126.6%2.4 pCi/L
Haywood County34 mi1,95130.2%2.2 pCi/L
McDowell County34 mi74636.5%2.6 pCi/L
Jackson County39 mi1,02426.8%2.1 pCi/L
Madison County39 mi25614.8%1.2 pCi/L

Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2022.

Hendersonville, Geology

The ground under Hendersonville

Predicted

Most of the ground under Hendersonville is one class on USGS's geologic map: 93.7% of its land is high radon potential, with 6.3% moderate. The map puts 93.7% of Hendersonville in the area it calls Chauga Belt and 6.3% in Inner Piedmont Belt. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).

USGS's geologic areas under Hendersonville
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Chauga BeltMonzonitic to granodioritic gneiss.High1293.7%
Inner Piedmont BeltProterozoic through Cambrian biotite gneiss and schist, and mica schist.Moderate116.3%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Hendersonville beside its county and North Carolina

Hendersonville sits on more high-potential ground than Henderson County as a whole: 93.7% of the city against 52.6% of the county. Hendersonville has more high-potential ground than North Carolina as a whole: 93.7% of its land against 1.3%.

Share of land by USGS radon potential: Hendersonville, the county it lies in and North Carolina
AreaEPA zoneLow potentialModerate potentialHigh potential
HendersonvilleBy countyNone6.3%93.7%
Henderson CountyZone 1None47.4%52.6%
North Carolina100 counties, pooled by land areaVaries64.8%33.0%1.3%

The map rates the ground, not the air in any home.

Hendersonville, Homes

Homes in Hendersonville

Fewer than six in ten of Hendersonville's 8,531 homes are detached houses (40%, against 69% across Henderson County); the rest are attached, in shared buildings or mobile. Half of its homes were built before 1985, close to Henderson County's 1989: 23% date from before 1960 and 31% from 2000 or later. Most occupied homes here are rented: owners live in 45% (Henderson County: 74%). A tenant can run a test; a fix is the landlord's to make.

Homes in Hendersonville, Henderson County, North Carolina, 2019 to 2023
HomesHendersonvilleHenderson CountyNorth Carolina
Housing units8,53157,3384,815,195
Detached houses40%69%65%
In buildings of 5 or more30%6%14%
Mobile homes4%15%11%
Built before 196023%14%14%
Built since 200031%30%33%
Middle year built198519891990
Owner-occupied45%74%66%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.

Local help

Hendersonville, Local resources

Local resources for Hendersonville

Who to ask in North Carolina: its radon program, test kits and professionals.

The program's own words on licensing are on the North Carolina page.

What it means

Hendersonville, Questions

Questions about radon in Hendersonville

What radon zone is Hendersonville in?

Hendersonville has no zone of its own: it shares Henderson County's, Zone 1, the map's highest class: a predicted county average above 4 pCi/L.

What are radon levels in Hendersonville?

Only 10 tests from Henderson County are on file with CDC for 2022, 40.0% of them at or above 4 pCi/L: too few to say how Hendersonville runs.

Should I test my home in Hendersonville?

Yes. With no dependable count of tests for Henderson County, a test of your own is the only reading there is; a short-term kit takes a few days. How to test a home.

What ground is Hendersonville built on, as far as radon goes?

93.7% of Hendersonville sits on what USGS's map calls "Chauga Belt", rated high for radon potential, radon index 12; another 6.3% is "Inner Piedmont Belt", rated moderate for radon potential, radon index 11. So the ground changes within Hendersonville itself.

Is radon higher in the counties around Hendersonville?

Some are and some are not. Against Henderson County's 40.0%, 1 of the 8 nearest counties with a figure report more and 7 less, from Madison County (14.8%, 39 miles off) to Transylvania County (48.1%, 21 miles off).

The answers use the published figures of Henderson County, the county Hendersonville lies in.

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