Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Hot Spring County, Arkansas
EPA puts Hot Spring County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
45.8%
Garland County
- Garland
- 45.8%
- Saline
- 31.9%
2 of 6 neighbours have 30+ tests, 2007 to 2016
Nearest county
45.8%
Garland County, 21 miles
- Garland
- 45.8%
- Arkansas
- 22.7%
Share at 4+ pCi/L, 48 tests, 2007 to 2016
Ground above low
24.9%
3.6 pts above Arkansas
- Hot Spring
- 24.9%
- Arkansas
- 21.3%
Share of land USGS rates moderate or high potential
Tests reported
2
Too few for a share
- Hot Spring
- 2
- Needed
- 30
2006 to 2015, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Hot Spring County
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.
The data
Hot Spring County, At a glance
Hot Spring County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 75% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Hot Spring County, 2008 to 2017, laboratory
CDC holds 1 reported test for Hot Spring County over the 2008 to 2017 laboratory totals, a result of 2.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Hot Spring County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Hot Spring County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Hot Spring County, Compared
Hot Spring County radon figures, compared
Calculated by Radon411CDC's largest figure for Hot Spring County rests on 2 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 2.1 pCi/L, with a middle value of 1.1 pCi/L.
Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Garland County reported the largest share at or above 4 pCi/L, 45.8%, and Saline County the smallest, 31.9%. Farther out, Pulaski County (48 miles away) at 6.8%, Washington County (135 miles away) at 14.3% and Benton County (158 miles away) at 31.0% have figures too. Pooled across 60 Arkansas counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Garland County reported the highest share (45.8%) and Pulaski County the lowest (6.8%). EPA's 1993 map puts Hot Spring County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 75% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Hot Spring County, Geology
The ground under Hot Spring County
PredictedMost of the ground under Hot Spring County is one class on USGS's geologic map: 75.1% of its land is low radon potential, with 24.9% moderate. The map puts 47.6% of Hot Spring County in the area it calls West Gulf Coastal Plain and 27.5% in Athens Plateau/Fourche Mountains, with one smaller area beside them. USGS gives the first a radon index of 7 and the second 8, both in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| West Gulf Coastal Plain | Glauconitic, phosphatic, and carbonaceous sediments. | Low | 7 | 47.6% |
| Athens Plateau/Fourche Mountains | Mississippian and Pennsylvanian sandstones and shales. | Low | 8 | 27.5% |
| Central Ouachita Mountains | Intensely deformed Ordovician and Silurian shales and sandstones with minor chert and limestone. | Moderate | 9 | 24.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Hot Spring County beside the ground around it
On moderate-potential ground Hot Spring County is close to Arkansas as a whole: 24.9% of its land against 21.3%. Of the 6 counties that border it, 3 have more moderate-potential ground, Garland County the most at 87.7%.
The map rates the ground, not the air in any home.
Local help
Hot Spring County, Local resources
Radon testing and mitigation in Hot Spring County
- Arkansas's radon programArkansas Department of HealthArkansas's radon program answers questions about testing, mitigation and the rules in Arkansas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Arkansas directoryNo professionals are listed in Arkansas yet. The state program can point you to registered testers and mitigators.
What Arkansas's program says
- Phone
- 501-661-2621
- ADH.EPI.Radon@arkansas.gov
What it means
Hot Spring County, Questions
Questions about radon in Hot Spring County
Are radon levels high in Hot Spring County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Hot Spring County, Arkansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.1 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Garland County reported the largest share at or above 4 pCi/L, 45.8%, and Saline County the smallest, 31.9%.
Which counties border Hot Spring County?
Hot Spring County borders 6 counties: Clark County, Garland County, Dallas County, Saline County, Grant County and Montgomery County.
Products
Hot Spring County, Products
Testing a home in Hot Spring County
No CDC figure names Hot Spring County; the nearest county with one, Garland County (21 miles away), reported 45.8% of its tests at or above 4 pCi/L over the 2007 to 2016 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Hot Spring County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
EcoBlu plug-in digital radon monitor with a display
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Hot Spring County, Bordering counties
Counties bordering Hot Spring County
Calculated by Radon411- Radon levels in Garland CountyEPA zone 2
45.8%at or above 4 pCi/L
Median 2.9 pCi/L · 48 tests
- Radon levels in Saline CountyEPA zone 3
31.9%at or above 4 pCi/L
Median 2.2 pCi/L · 47 tests
- Radon levels in Clark CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.3 pCi/L · 4 tests
- Radon levels in Dallas CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.2 pCi/L · 1 test
- Radon levels in Grant CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 1 test
- Radon levels in Montgomery CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 1 test
Hot Spring County, Cities and towns
Cities and towns in Hot Spring County
The Census Bureau estimates 33,451 residents in Hot Spring County for July 1, 2025, 365 more than in 2020 (+1.1%). That works out to 54 people per square mile of land. Its largest town, Malvern, has 11,144 residents, 33.3% of the total. Together its 6 incorporated places hold 38.7% of those residents; the other 61.3% live outside any of them. Reported testing is thin here: 2 tests over 2006 to 2015, or 0.1 for every 1,000 residents (2025 estimate), where Arkansas as a whole comes to 0.2.
From Malvern to Friendship, CDC publishes no figure by town: each reads Hot Spring County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Malvern | 11,144 | +2.7% | 33.3% |
| Rockport | 709 | +0.3% | 2.1% |
| Midway | 375 | Level | 1.1% |
| Donaldson | 282 | +1.8% | 0.8% |
| Perla | 253 | +0.4% | 0.8% |
| Friendship | 167 | +0.6% | 0.5% |
6 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).
Hot Spring County, Homes
Homes in Hot Spring County
Of Hot Spring County's 14,259 homes, 71% are detached houses, against 70% across Arkansas; 22% are mobile homes. The homes are older than Arkansas' as a whole: half were built before 1979 (1987 for Arkansas), and 19% date from before 1960. Owners live in 77% of the occupied homes (Arkansas: 66%), so for most households a test and a fix are their own to order.
| Homes | Hot Spring County | Arkansas |
|---|---|---|
| Housing units | 14,259 | 1,382,664 |
| Detached houses | 71% | 70% |
| In buildings of 5 or more | 2% | 10% |
| Mobile homes | 22% | 11% |
| Built before 1960 | 19% | 14% |
| Built since 2000 | 22% | 28% |
| Middle year built | 1979 | 1987 |
| Owner-occupied | 77% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.