Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Bryan County, Georgia
EPA puts Bryan 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
0.0%
Chatham County
- Chatham
- 0.0%
1 of 5 neighbours have 30+ tests, 2007 to 2016
Nearest county
0.0%
Chatham County, 18 miles
- Chatham
- 0.0%
- Georgia
- 23.9%
Share at 4+ pCi/L, 47 tests, 2007 to 2016
Ground above low
None
26.5 pts below Georgia
- Bryan
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Bryan
- 1
- Needed
- 30
2008 to 2017, 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 Bryan 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
Bryan County, At a glance
Bryan County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 98% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Bryan County, 2008 to 2017, laboratory
CDC holds 1 reported test for Bryan 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). Bryan County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Bryan 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).
Bryan County, Compared
Bryan County radon figures, compared
Calculated by Radon411CDC's largest figure for Bryan County rests on 1 test over the 2008 to 2017 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 2.1 pCi/L, with a middle value of 2.1 pCi/L.
Chatham County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 0.0% of its tests at or above 4 pCi/L. Farther out, Laurens County (92 miles away) at 16.1%, Richmond County (100 miles away) at 0.0% and Columbia County (116 miles away) at 9.7% 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 Bryan County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 98% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Bryan County, Geology
The ground under Bryan County
PredictedUSGS's geologic map puts all of Bryan County's mapped land in one class: low radon potential. 97.6% of it lies in the area the map calls Coastal Plain, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Plain | Quaternary and Pleistocene-Pliocene coastal sand and gravel, lagoon and marsh clay and silt. | Low | 7 | 97.6% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Bryan County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Bryan 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
Bryan County, Local resources
Radon testing and mitigation in Bryan 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
Bryan County, Questions
Questions about radon in Bryan County
Are radon levels high in Bryan County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Bryan County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.1 pCi/L. Chatham County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 0.0% of its tests at or above 4 pCi/L.
Which counties border Bryan County?
Bryan County borders 5 counties: Liberty County, Chatham County, Effingham County, Evans County and Bulloch County.
Products
Bryan County, Products
Testing a home in Bryan County
No CDC figure names Bryan County; the nearest county with one, Chatham County (18 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 Bryan 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
MonitorAEGTEST
HOUND-3699 radon monitor with a 2.1-inch touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
First reading: Within 1 hour
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Bryan County, Bordering counties
Counties bordering Bryan County
Calculated by Radon411- Radon levels in Liberty CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.0 pCi/L · 12 tests
- Radon levels in Chatham CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 47 tests
- Radon levels in Effingham CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 7 tests
- Radon levels in Evans CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.2 pCi/L · 1 test
- Radon levels in Bulloch CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.4 pCi/L · 22 tests
Bryan County, Cities and towns
Cities and towns in Bryan County
Bryan County is growing: the Census Bureau puts it at 52,062 residents on July 1, 2025, up 15.6% from 45,048 in 2020. That works out to 119 people per square mile of land. Its largest town, Richmond Hill, has 20,022 residents, 38.5% of the total. Together its 2 incorporated places hold 43.7% of those residents; the other 56.3% live outside any of them. Reported testing is thin here: 1 test over 2008 to 2017, or under 0.1 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
From Richmond Hill to Pembroke, CDC publishes no figure by town: each reads Bryan County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Richmond Hill | 20,022 | +20.4% | 38.5% |
| Pembroke | 2,706 | +7.8% | 5.2% |
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).
Bryan County, Homes
Homes in Bryan County
Of Bryan County's 17,325 homes, 74% are detached houses, against 66% across Georgia; 12% are mobile homes. Much of Bryan County is recent building: 59% of its homes have gone up since 2000 and the middle year built is 2004, against 1991 for Georgia. Owners live in 76% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.
| Homes | Bryan County | Georgia |
|---|---|---|
| Housing units | 17,325 | 4,483,873 |
| Detached houses | 74% | 66% |
| In buildings of 5 or more | 8% | 16% |
| Mobile homes | 12% | 8% |
| Built before 1960 | 4% | 12% |
| Built since 2000 | 59% | 33% |
| Middle year built | 2004 | 1991 |
| Owner-occupied | 76% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.