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 Douglas County, Georgia
EPA puts Douglas County in Zone 2, its middle radon zone, and high results are common there: 47.3% of the 355 radon tests reported to CDC (2008 to 2017, laboratory totals) came back at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
47.3%
22.5 pts above GA
- Douglas
- 47.3%
- Georgia
- 24.8%
355 tests, 2008 to 2017
Median result
3.7pCi/L
Below action level
- Douglas
- 3.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
355
15th of 57 by tests
- Douglas
- 355
- Fulton
- 4,858
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Georgia
2 of 57
Top quarter
- Douglas
- 47.3%
- Barrow
- 48.3%
By share, of 57 with 30+ tests
Read a result for Douglas County
Starts at Douglas County's median, 3.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.7 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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. Douglas County's median reported result, 2008 to 2017.
The data
Douglas County, At a glance
Douglas County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Douglas County is a
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 Douglas County, 2008 to 2017, laboratory
Under 2 pCi/L: 22%2 to 4 pCi/L: 31%4 pCi/L and above: 47%
Of 355 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 76 | 21.4% |
| 2 to 4 pCi/L | 111 | 31.3% |
| 4 pCi/L and above | 168 | 47.3% |
What these figures count
These are the 355 tests reported to CDC for Douglas County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Douglas County, Compared
Douglas County radon figures, compared
Calculated by Radon411In Douglas County, about 5 in 10 reported tests over the 2008 to 2017 laboratory totals (168 of 355) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 11.6 points higher. Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Douglas County runs 22.5 points above its state.
Of 4 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 16.3% (Cobb County) to 40.5% (Carroll County). By share, Douglas County is 2nd of 57 Georgia counties with 30 or more tests for the same period.
Half the tests came in under 3.7 pCi/L and half over it; the single highest reached 45.8 pCi/L. Below the action level, 76 tests (21.4%) came in under 2 pCi/L, against 44.0% statewide, and 111 tests (31.3%) fell between 2 and 4, against 31.2% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 47.3% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 31 tests taken after mitigation in Douglas County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Douglas County went from 316 tests (2005 to 2014) to 355 (2008 to 2017), the share going from 47.8% to 47.3%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Douglas County, Geology
The ground under Douglas County
PredictedUSGS's geologic map puts all of Douglas County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Georgiabama Thrust Stack (South), to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Georgiabama Thrust Stack (South) | Schist, amphibolite and granite. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Douglas County beside the ground around it
Douglas County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 4 counties that border it, none has as large a share of moderate-potential ground; Carroll County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Douglas County, Local resources
Radon testing and mitigation in Douglas 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
Douglas County, Questions
Questions about radon in Douglas County
Are radon levels high in Douglas County?
Over the 2008 to 2017 laboratory totals, 47.3% of the radon tests reported to CDC for Douglas County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.7 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 1 reported a higher share; pooled, the state comes to 24.8%.
Which counties border Douglas County?
Douglas County borders 4 counties: Paulding County, Cobb County, Carroll County and Fulton County.
Products
Douglas County, Products
Testing a home in Douglas County
In Douglas County, 47.3% of 355 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.8% pooled across Georgia. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Douglas County; a long-term test tells the year-round average.
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
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Douglas County, Bordering counties
Counties bordering Douglas County
Calculated by Radon411- Radon levels in Carroll CountyEPA zone 2
40.5%at or above 4 pCi/L
Median 3.4 pCi/L · 190 tests · 6.8 points below Douglas County
- Radon levels in Paulding CountyEPA zone 2
26.0%at or above 4 pCi/L
Median 2.3 pCi/L · 289 tests · 21.3 points below Douglas County
- Radon levels in Fulton CountyEPA zone 1
20.8%at or above 4 pCi/L
Median 2.2 pCi/L · 4,858 tests · 26.5 points below Douglas County
- Radon levels in Cobb CountyEPA zone 1
16.3%at or above 4 pCi/L
Median 1.9 pCi/L · 3,315 tests · 31.0 points below Douglas County
Douglas County, Cities and towns
Cities and towns in Douglas County
Douglas County is growing: the Census Bureau puts it at 154,293 residents on July 1, 2025, up 6.6% from 144,698 in 2020. That works out to 771 people per square mile of land. Its largest town, Douglasville, has 41,523 residents, 26.9% of the total. CDC's 355 reported tests for 2008 to 2017 work out to 2.3 per 1,000 residents (2025 estimate), close to Georgia's 2.7.
From Douglasville to Austell, CDC publishes no figure by town: each reads Douglas County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Douglasville | 41,523 | +19.3% | 26.9% |
| Villa Ricaextends beyond Douglas County | 21,022 | +22.0% | Counted whole |
| Austellextends beyond Douglas County | 8,339 | +6.2% | Counted whole |
3 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). A place that extends beyond Douglas County is counted whole, so it has no share.
Douglas County, Homes
Homes in Douglas County
Douglas County is a place of houses on their own lots: 77% of its 55,208 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1996, close to Georgia's 1991: 4% date from before 1960 and 42% from 2000 or later. 66% 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 | Douglas County | Georgia |
|---|---|---|
| Housing units | 55,208 | 4,483,873 |
| Detached houses | 77% | 66% |
| In buildings of 5 or more | 13% | 16% |
| Mobile homes | 5% | 8% |
| Built before 1960 | 4% | 12% |
| Built since 2000 | 42% | 33% |
| Middle year built | 1996 | 1991 |
| Owner-occupied | 66% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.