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 Washington County, Georgia
EPA puts Washington 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
Nearest county
16.1%
Laurens County, 36 miles
- Laurens
- 16.1%
- Georgia
- 23.9%
Share at 4+ pCi/L, 31 tests, 2007 to 2016
Ground above low
None
26.5 pts below Georgia
- Washington
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
4
Too few for a share
- Washington
- 4
- 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 Washington 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
Washington County, At a glance
Washington 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 Washington County, 2008 to 2017, laboratory
CDC holds 1 reported test for Washington County over the 2008 to 2017 laboratory totals, a result of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Washington County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Washington 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).
Washington County, Compared
Washington County radon figures, compared
Calculated by Radon411CDC's largest figure for Washington County rests on 4 tests over the 2005 to 2014 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 25.0 points and no rank or comparison is drawn from it. Results reached as high as 1.1 pCi/L, with a middle value of 0.4 pCi/L.
The nearest counties with a figure are Laurens County (36 miles away) at 16.1%, Putnam County (41 miles away) at 27.3% and Jones County (45 miles away) at 26.5%. 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 Washington 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.
Washington County, Geology
The ground under Washington County
PredictedUSGS's geologic map puts all of Washington County's mapped land in one class: low radon potential. 99.5% 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 | 99.5% |
| Little River Thrust Stack | Biotite and amphibolite gneiss, granite gneiss, mica schist. | Low | 7 | 0.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Washington County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Washington 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
Washington County, Local resources
Radon testing and mitigation in Washington 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
Washington County, Questions
Questions about radon in Washington County
Are radon levels high in Washington County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Washington County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the 8 nearest counties with a figure, within 59 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 27.3%.
Which counties border Washington County?
Washington County borders 6 counties: Glascock County, Jefferson County, Hancock County, Johnson County, Wilkinson County and Baldwin County.
Products
Washington County, Products
Testing a home in Washington County
No CDC figure names Washington County; the nearest county with one, Laurens County (36 miles away), reported 16.1% 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 Washington 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
lüft plug-in radon and indoor air quality monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Wi-Fi, Bluetooth
- App only
First reading: Within 90 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Washington County, Bordering counties
Counties bordering Washington County
Calculated by Radon411- Radon levels in Baldwin CountyEPA zone 3
20.0%at or above 4 pCi/L
Median 1.3 pCi/L · 15 tests
- Radon levels in Jefferson CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 3 tests
- Radon levels in Hancock CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.6 pCi/L · 3 tests
- Radon levels in Johnson CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 2.2 pCi/L · 1 test
- Radon levels in Wilkinson CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Glascock CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Washington County, Cities and towns
Cities and towns in Washington County
About 19,453 people live in Washington County by the Census Bureau's estimate for July 1, 2025, 496 fewer than in 2020 (−2.5%). That works out to 29 people per square mile of land. Its largest town, Sandersville, has 5,397 residents, 27.7% of the total. Together its 7 incorporated places hold 49.9% of those residents; the other 50.1% live outside any of them. Reported testing is thin here: 4 tests over 2005 to 2014, or 0.2 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.2.
From Sandersville to Riddleville, CDC publishes no figure by town: each reads Washington County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Sandersville | 5,397 | −6.6% | 27.7% |
| Davisboro | 1,826 | −0.3% | 9.4% |
| Tennille | 1,805 | +17.2% | 9.3% |
| Harrison | 318 | −6.2% | 1.6% |
| Oconee | 173 | −4.9% | 0.9% |
| Deepstep | 113 | −3.4% | 0.6% |
| Riddleville | 78 | −3.7% | 0.4% |
7 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).
Washington County, Homes
Homes in Washington County
Of Washington County's 8,696 homes, 61% are detached houses, against 66% across Georgia; 30% are mobile homes. The homes are older than Georgia's as a whole: half were built before 1982 (1991 for Georgia), and 21% date from before 1960. 67% 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 | Washington County | Georgia |
|---|---|---|
| Housing units | 8,696 | 4,483,873 |
| Detached houses | 61% | 66% |
| In buildings of 5 or more | 1% | 16% |
| Mobile homes | 30% | 8% |
| Built before 1960 | 21% | 12% |
| Built since 2000 | 23% | 33% |
| Middle year built | 1982 | 1991 |
| Owner-occupied | 67% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.