Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Effingham County, Georgia
EPA puts Effingham County in Zone 3, its lowest radon zone, and only 8 radon tests from it are 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 6 neighbours have 30+ tests, 2007 to 2016
Nearest county
0.0%
Chatham County, 28 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
- Effingham
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
8
Too few for a share
- Effingham
- 8
- 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 Effingham 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
Effingham County, At a glance
Effingham 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 Effingham County, 2008 to 2017, laboratory
CDC holds 8 reported tests for Effingham County over the 2008 to 2017 laboratory totals, with a median of 1.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Effingham County beside the counties around it is how this page reads it.
What these figures count
Only 8 tests were reported to CDC for Effingham 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).
Effingham County, Compared
Effingham County radon figures, compared
Calculated by Radon411CDC's largest figure for Effingham County rests on 8 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 12.5 points and no rank or comparison is drawn from it. Results reached as high as 2.7 pCi/L, with a middle value of 1.2 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, Richmond County (81 miles away) at 0.0%, Laurens County (93 miles away) at 16.1% and Columbia County (97 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 Effingham 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.
Effingham County, Geology
The ground under Effingham County
PredictedUSGS's geologic map puts all of Effingham 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 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 | 99.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Effingham County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Effingham County's is. None of the 6 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Effingham County, Local resources
Radon testing and mitigation in Effingham 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
Effingham County, Questions
Questions about radon in Effingham County
Are radon levels high in Effingham County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Effingham County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 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 Effingham County?
Effingham County borders 6 counties: Jasper County, SC, Bryan County, GA, Bulloch County, GA, Chatham County, GA, Screven County, GA and Hampton County, SC.
Products
Effingham County, Products
Testing a home in Effingham County
No CDC figure names Effingham County; the nearest county with one, Chatham County (28 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 Effingham 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
RM-65 rechargeable radon detector with a color screen and alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Effingham County, Bordering counties
Counties bordering Effingham County
Calculated by Radon411- Radon levels in Jasper County, SCEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 8 tests
- Radon levels in Bryan County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 2.1 pCi/L · 1 test
- Radon levels in Bulloch County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.4 pCi/L · 22 tests
- Radon levels in Chatham County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 47 tests
- Radon levels in Screven County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 5 tests
- Radon levels in Hampton County, SCEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 6 tests
Effingham County, Cities and towns
Cities and towns in Effingham County
Effingham County is growing: the Census Bureau puts it at 74,397 residents on July 1, 2025, up 14.1% from 65,180 in 2020. That works out to 155 people per square mile of land. No town dominates: Rincon, the largest, has 11,726 residents, 15.8% of the total. Together its 3 incorporated places hold 24.6% of those residents; the other 75.4% live outside any of them. Reported testing is thin here: 8 tests over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
From Rincon to Guyton, CDC publishes no figure by town: each reads Effingham County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Rincon | 11,726 | +6.4% | 15.8% |
| Springfield | 3,344 | +23.6% | 4.5% |
| Guyton | 3,247 | +37.9% | 4.4% |
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).
Effingham County, Homes
Homes in Effingham County
Of Effingham County's 25,256 homes, 74% are detached houses, against 66% across Georgia; 18% are mobile homes. Much of Effingham County is recent building: 53% of its homes have gone up since 2000 and the middle year built is 2001, against 1991 for Georgia. Owners live in 79% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.
| Homes | Effingham County | Georgia |
|---|---|---|
| Housing units | 25,256 | 4,483,873 |
| Detached houses | 74% | 66% |
| In buildings of 5 or more | 5% | 16% |
| Mobile homes | 18% | 8% |
| Built before 1960 | 5% | 12% |
| Built since 2000 | 53% | 33% |
| Middle year built | 2001 | 1991 |
| Owner-occupied | 79% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.