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Radon Levels in Haywood County, North Carolina

EPA puts Haywood County in Zone 2, its middle radon zone, and only 18 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

  • Share at 4+ pCi/L

    30.2%

    7.0 pts above NC

    Haywood
    30.2%
    NC
    23.2%

    1,951 tests, 2007 to 2016

  • Median result

    2.2pCi/L

    Below action level

    Haywood
    2.2 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2007 to 2016

  • Tests reported

    1,951

    8th of 73 by tests

    Haywood
    1,951
    Wake
    9,664

    Reported to CDC before any fix, 2007 to 2016

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in NC

    21 of 73

    Middle half

    Haywood
    30.2%
    Transylvania
    48.1%

    By share, of 73 with 30+ tests

Read a result for Haywood County

Starts at Haywood County's median, 2.2 pCi/L

2.2pCi/L

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

EPA’s reading of 2.2 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. Haywood County's median reported result, 2007 to 2016.

The data

Haywood County, At a glance

Haywood County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Haywood County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Haywood County, 2022

Share of reported tests at or above 4 pCi/L, by year, Haywood County
Share of reported tests at or above 4 pCi/L, by year, Haywood County
YearShare of reported tests at or above 4 pCi/L
201423.0%
202023.0%
202123.1%
20225.6%

2022: 5.6%. Across these years the share ran from 5.6% to 23.1%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 18 tests were reported to CDC for Haywood County over 2022, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.

Measured: CDC tracking data. Figure above: 2022. Measured data period: 2005 to 2022 (every CDC figure on file).

How to read these figures

Haywood County, Compared

Haywood County radon figures, compared

Calculated by Radon411

In Haywood County, about 3 in 10 reported tests over the 2007 to 2016 laboratory totals (590 of 1,951) were at or above EPA's action level. Against the national pool of 35.8%, the gap is 5.6 points lower. Across 99 North Carolina counties pooled together, 23.2% of tests reached that level, so Haywood County runs 7.0 points above its state.

The newest figure, in 2022, counts only 18 tests (5.6% at or above 4 pCi/L), too few to compare, so this reading uses the 1,951-test figure.

Of 8 neighbours with a figure, 6 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 14.8% (Madison County) to 52.3% (Sevier County, TN). By share, Haywood County is 21st of 73 North Carolina counties with 30 or more tests for the same period.

Year by year, 2014 opened at 23.0% and 2021 closed at 23.1% (about level), with 2021 the high at 23.1%. Half the tests came in under 2.2 pCi/L and half over it; the single highest reached 108.1 pCi/L. Below the action level, 891 tests (45.7%) came in under 2 pCi/L, against 55.2% statewide, and 470 tests (24.1%) fell between 2 and 4, against 21.6% statewide.

Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 30.2% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 20 tests taken after mitigation in Haywood County for the same period: tests in homes where a fix was already in.

The busiest year on file was 2020, with 296 tests reported; the quietest, 2022, had 18.

Share of reported tests at or above 4 pCi/L by year, Haywood County against North Carolina2014 to 2021, years with 30 or more tests: Haywood County 23.0% to 23.1%, the state's pooled share 14.9% in 2021.
Haywood CountyNorth Carolina, pooled
Share of reported tests at or above 4 pCi/L by year, Haywood County against North Carolina: data table
YearTestsHaywood County, at or above 4 pCi/LNorth Carolina, pooled
201427423.0%21.9%
202029623.0%21.1%
202116923.1%14.9%
Haywood County against North Carolina, the United States and nearby counties, 2007 to 2016, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Haywood County
Haywood County1,95130.2%2.2 pCi/LThis county
North Carolina, pooled99 counties, pooled70,56623.2%Not pooled−7.0 points
United States, pooled2,666 counties, pooled1,939,02535.8%Not pooled+5.6 points
Watauga Countyhighest in the state1,13145.2%3.5 pCi/L+15.0 points
Columbus Countylowest in the state320.0%0.1 pCi/L−30.2 points
Sevier County, TNborders it30252.3%4.3 pCi/L+22.1 points
Cocke County, TNborders it5450.0%3.9 pCi/L+19.8 points
Transylvania County, NCborders it3,99648.1%3.7 pCi/L+17.9 points
Swain County, NCborders it12642.9%3.3 pCi/L+12.7 points
Henderson County, NCborders it4,12642.6%3.3 pCi/L+12.4 points
Buncombe County, NCborders it6,67030.3%2.4 pCi/L+0.1 points
Jackson County, NCborders it1,02426.8%2.1 pCi/L−3.4 points
Madison County, NCborders it25614.8%1.2 pCi/L−15.4 points
Where Haywood County's reported results fell, 2007 to 2016, laboratory, beside North Carolina and the United States
ResultHaywood County testsHaywood County shareNorth Carolina shareU.S. shareAgainst North Carolina
Under 2 pCi/L89145.7%55.2%39.6%−9.5 points
2 to 4 pCi/L47024.1%21.6%24.6%+2.5 points
4 pCi/L and above59030.2%23.2%35.8%+7.0 points
Haywood County ranked among the 73 North Carolina counties with 30 or more tests, by share at or above 4 pCi/L, 2007 to 2016, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Surry County16 of 7377534.6%2.6 pCi/L
Ashe County17 of 7365833.9%2.6 pCi/L
Alexander County18 of 7327432.5%2.5 pCi/L
Polk County19 of 7361631.2%2.4 pCi/L
Buncombe County20 of 736,67030.3%2.4 pCi/L
Haywood County21 of 731,95130.2%2.2 pCi/L
Yancey County22 of 7332329.4%1.9 pCi/L
Rockingham County23 of 7380729.4%2.2 pCi/L
Lincoln County24 of 7363629.1%2.4 pCi/L
Forsyth County25 of 735,64429.0%2.3 pCi/L
Caldwell County26 of 7380228.7%2.6 pCi/L
Haywood County radon tests by year, against North Carolina's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNorth Carolina, pooledChange from the row before
2022185.6%1.0 pCi/L9.0 pCi/L10.7%−17.5 points
202116923.1%1.0 pCi/L72.0 pCi/L14.9%+0.1 points
202029623.0%1.0 pCi/L56.0 pCi/L21.1%Level
201427423.0%1.0 pCi/L38.0 pCi/L21.9%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Haywood County, Geology

The ground under Haywood County

Predicted

USGS's geologic map puts all of Haywood County's mapped land in one class: moderate radon potential. The map puts 87.6% of Haywood County in the area it calls Blue Ridge and 12.4% in Georgiabama Thrust Stack (South). USGS gives the first a radon index of 10 and the second 9, both in the moderate band (9 to 11).

USGS's geologic areas under Haywood County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Blue RidgeGranite, pegmatite, monazite, schist, and gneiss.Moderate1087.6%
Georgiabama Thrust Stack (South)Schist, amphibolite and granite.Moderate912.4%

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

Haywood County beside the ground around it

Across North Carolina 1.3% of the land is rated high; none of Haywood County's is. Of the 8 counties that border it, 6 have more high-potential ground, Cocke County, TN the most at 67.1%.

Share of land by USGS radon potential: Haywood County, the 8 counties bordering it and North Carolina
AreaEPA zoneLow potentialModerate potentialHigh potential
Haywood CountyZone 2None100%None
Jackson CountyZone 2None100%None
Buncombe CountyZone 1None88.0%12.0%
Transylvania CountyZone 1None48.0%52.0%
Madison CountyZone 2None99.9%0.1%
Cocke County, TNZone 2None32.9%67.1%
Henderson CountyZone 1None47.4%52.6%
Swain CountyZone 2None100%None
Sevier County, TNZone 2None61.5%38.5%
North Carolina100 counties, pooled by land areaVaries64.8%33.0%1.3%

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

What it means

Haywood County, Questions

Questions about radon in Haywood County

Are radon levels high in Haywood County?

In 2022, 5.6% of the radon tests reported to CDC for Haywood County, North Carolina were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.0 pCi/L. Of 73 North Carolina counties with 30 or more tests for the same period, 20 reported a higher share; pooled, the state comes to 23.2%.

Which counties border Haywood County?

Haywood County borders 8 counties: Jackson County, NC, Buncombe County, NC, Transylvania County, NC, Madison County, NC, Cocke County, TN, Henderson County, NC, Swain County, NC and Sevier County, TN.

Products

Haywood County, Products

Testing a home in Haywood County

In Haywood County, 30.2% of 1,951 tests reported to CDC over the 2007 to 2016 laboratory totals reached 4 pCi/L, against 23.2% pooled across North Carolina. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Haywood County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Haywood County homes, compared

Explore

Haywood County, Bordering counties

Counties bordering Haywood County

Calculated by Radon411

Haywood County, Cities and towns

Cities and towns in Haywood County

The Census Bureau estimates 63,369 residents in Haywood County for July 1, 2025, 1,150 more than in 2020 (+1.8%). That works out to 114 people per square mile of land. No town dominates: Waynesville, the largest, has 11,006 residents, 17.4% of the total. Together its 4 incorporated places hold 29.2% of those residents; the other 70.8% live outside any of them. Testing is reported here more often than across the state: CDC's 1,951 reported tests for 2007 to 2016 come to 30.8 for every 1,000 residents (2025 estimate), against 6.3 for North Carolina.

From Waynesville to Clyde, CDC publishes no figure by town: each reads Haywood County's.

The cities and towns in Haywood County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Waynesville11,006+7.6%17.4%
Canton4,418+0.3%7.0%
Maggie Valley1,748+1.0%2.8%
Clyde1,355−0.9%2.1%

4 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).

Haywood County, Homes

Homes in Haywood County

Of Haywood County's 35,307 homes, 74% are detached houses, against 65% across North Carolina; 17% are mobile homes. Half of its homes were built before 1983, close to North Carolina's 1990: 21% date from before 1960 and 23% from 2000 or later. Owners live in 75% of the occupied homes (North Carolina: 66%), so for most households a test and a fix are their own to order.

Homes in Haywood County, North Carolina, 2019 to 2023
HomesHaywood CountyNorth Carolina
Housing units35,3074,815,195
Detached houses74%65%
In buildings of 5 or more3%14%
Mobile homes17%11%
Built before 196021%14%
Built since 200023%33%
Middle year built19831990
Owner-occupied75%66%

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