Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Grady County, Georgia
EPA puts Grady County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2005 to 2014, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
24.0%
Leon County
- Leon
- 24.0%
- Gadsden
- 5.4%
2 of 5 neighbours have 30+ tests, 2007 to 2016
Nearest county
0.0%
Dougherty County, 45 miles
- Dougherty
- 0.0%
- Georgia
- 23.9%
Share at 4+ pCi/L, 32 tests, 2007 to 2016
Ground above low
None
26.5 pts below Georgia
- Grady
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Grady
- 1
- Needed
- 30
2005 to 2014, 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 Grady 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
Grady County, At a glance
Grady County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Grady County, 2005 to 2014, laboratory
CDC holds 1 reported test for Grady County over the 2005 to 2014 laboratory totals, a result of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Grady County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Grady County over 2005 to 2014 (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. Measured data period: 2005 to 2014.
Grady County, Compared
Grady County radon figures, compared
Calculated by Radon411CDC's largest figure for Grady County rests on 1 test over the 2005 to 2014 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 0.1 pCi/L, with a middle value of 0.1 pCi/L.
Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Leon County, FL reported the largest share at or above 4 pCi/L, 24.0%, and Gadsden County, FL the smallest, 5.4%. Farther out, Dougherty County (45 miles away) at 0.0%, Houston County (114 miles away) at 8.2% and Muscogee County (119 miles away) at 2.1% have figures too. Pooled across 137 Georgia counties, 23.9% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Barrow County reported the highest share (51.0%) and Dougherty County the lowest (0.0%). EPA's 1993 map puts Grady County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Grady County, Geology
The ground under Grady County
PredictedUSGS's geologic map puts all of Grady County's mapped land in one class: low radon potential. All of it lies in the area the map calls Coastal Plain, to which USGS gives a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Plain | Cretaceous and Tertiary marine and coastal sediments including limestone, sandstone, sand, silt, and clay. Coastal plan sands containing glauconite may generate locally elevated radon. | Low | 8 | 99.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Grady County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Grady County's is. None of the 5 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Grady County, Local resources
Radon testing and mitigation in Grady County
- Georgia's radon programGeorgia Attorney General's Consumer Protection DivisionGeorgia's radon program does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Georgia.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
A kit costs $15.00 if mailed or $10.00 if picked up at a participating County Extension office.
- Compare kits
- Professionals in Georgia3 professionals are listed in Georgia.
What Georgia's program says
- Licensing of radon professionals
There are no laws mandating a mitigator receive certification in Georgia, however, many mitigators choose to get certified by one of two national programs.
What it means
Grady County, Questions
Questions about radon in Grady County
Are radon levels high in Grady County?
Over the 2005 to 2014 laboratory totals, 0.0% of the radon tests reported to CDC for Grady County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Leon County, FL reported the largest share at or above 4 pCi/L, 24.0%, and Gadsden County, FL the smallest, 5.4%.
Which counties border Grady County?
Grady County borders 5 counties: Thomas County, GA, Decatur County, GA, Leon County, FL, Gadsden County, FL and Mitchell County, GA.
Products
Grady County, Products
Testing a home in Grady County
No CDC figure names Grady County; the nearest county with one, Dougherty County (45 miles away), reported 0.0% 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 Grady County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
Wave Radon battery smart radon monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- App only
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Grady County, Bordering counties
Counties bordering Grady County
Calculated by Radon411- Radon levels in Leon County, FLEPA zone 2
24.0%at or above 4 pCi/L
Median 2.3 pCi/L · 4,043 tests
- Radon levels in Thomas County, GAEPA zone 3
15.4%at or above 4 pCi/L
Median 1.7 pCi/L · 13 tests
- Radon levels in Gadsden County, FLEPA zone 3
5.4%at or above 4 pCi/L
Median 1.1 pCi/L · 130 tests
- Radon levels in Decatur County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 1.6 pCi/L · 4 tests
- Radon levels in Mitchell County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 1.3 pCi/L · 1 test
Grady County, Cities and towns
Cities and towns in Grady County
The Census Bureau estimates 26,590 residents in Grady County for July 1, 2025, 377 more than in 2020 (+1.4%). That works out to 59 people per square mile of land. Its largest town, Cairo, has 10,150 residents, 38.2% of the total. Together its 2 incorporated places hold 39.7% of those residents; the other 60.3% live outside any of them. Reported testing is thin here: 1 test over 2005 to 2014, or under 0.1 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.2.
From Cairo to Whigham, CDC publishes no figure by town: each reads Grady County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Cairo | 10,150 | −0.1% | 38.2% |
| Whigham | 413 | −2.1% | 1.6% |
2 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).
Grady County, Homes
Homes in Grady County
Of Grady County's 11,601 homes, 61% are detached houses, against 66% across Georgia; 31% are mobile homes. Half of its homes were built before 1990, close to Georgia's 1991: 16% date from before 1960 and 27% from 2000 or later. 64% of occupied homes are lived in by their owner (Georgia: 65%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Grady County | Georgia |
|---|---|---|
| Housing units | 11,601 | 4,483,873 |
| Detached houses | 61% | 66% |
| In buildings of 5 or more | 4% | 16% |
| Mobile homes | 31% | 8% |
| Built before 1960 | 16% | 12% |
| Built since 2000 | 27% | 33% |
| Middle year built | 1990 | 1991 |
| Owner-occupied | 64% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.