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 Washington County, Florida
EPA puts Washington County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
6.0%
Jackson County
- Jackson
- 6.0%
1 of 4 neighbours have 30+ tests, 2008 to 2017
Nearest county
6.0%
Jackson County, 30 miles
- Jackson
- 6.0%
- Florida
- 22.7%
Share at 4+ pCi/L, 67 tests, 2008 to 2017
Ground above low
None
7.1 pts below Florida
- Washington
- 0.0%
- Florida
- 7.1%
Share of land USGS rates moderate or high potential
Tests reported
2
Too few for a share
- Washington
- 2
- 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 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, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2020 | 0.0% |
| 2021 | 0.0% |
| 2023 | 0.0% |
2023: 0.0%. Across these years the share ran from 0.0% to 0.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 1 test was reported to CDC for Washington County over 2023, 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: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Washington County, Compared
Washington County radon figures, compared
Calculated by Radon411CDC's largest figure for Washington County rests on 2 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 1.6 pCi/L, with a middle value of 0.9 pCi/L.
Jackson County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 6.0% of its tests at or above 4 pCi/L. Farther out, Okaloosa County (55 miles away) at 2.9%, Gadsden County (63 miles away) at 6.3% and Santa Rosa County (81 miles away) at 2.0% have figures too. Pooled across 62 Florida counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Marion County reported the highest share (42.9%) and St. Lucie 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. All of it lies in the area the map calls Northern Highland, to which USGS gives a radon index of 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern Highland | Sand, silt, clay, gravel | Low | 6 | 100% |
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 Florida 7.1% of the land is rated moderate; none of Washington County's is. None of the 4 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
- Florida’s Radon ProgramFlorida’s Radon Program, run by Florida Department of Health, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Florida.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Protect your family by requesting a FREE radon test kit.
- Compare kits
- Professionals in Florida77 professionals are listed in Florida.
What Florida's program says
- Phone
- 850-245-4288
- PHtoxicology@FLhealth.gov
- Licensing of radon professionals
Florida Statutes require the certification of businesses and individuals providing radon services or any other radon related activity.
What it means
Washington County, Questions
Questions about radon in Washington County
Are radon levels high in Washington County?
In 2023, 0.0% of the radon tests reported to CDC for Washington County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.5 pCi/L. Jackson County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 6.0% of its tests at or above 4 pCi/L.
Which counties border Washington County?
Washington County borders 4 counties: Holmes County, Bay County, Walton County and Jackson County.
Products
Washington County, Products
Testing a home in Washington County
No CDC figure names Washington County; the nearest county with one, Jackson County (30 miles away), reported 6.0% of its tests at or above 4 pCi/L over the 2008 to 2017 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
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
MonitorAranet
Radon Plus battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Approved
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 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 Walton CountyEPA zone 3
20.0%at or above 4 pCi/L
Median 1.4 pCi/L · 10 tests
- Radon levels in Bay CountyEPA zone 3
12.5%at or above 4 pCi/L
Median 0.9 pCi/L · 16 tests
- Radon levels in Jackson CountyEPA zone 3
6.0%at or above 4 pCi/L
Median 0.7 pCi/L · 67 tests
- Radon levels in Holmes CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 7 tests
Washington County, Cities and towns
Cities and towns in Washington County
Washington County is growing: the Census Bureau puts it at 26,695 residents on July 1, 2025, up 5.4% from 25,324 in 2020. That works out to 46 people per square mile of land. No town dominates: Chipley, the largest, has 3,804 residents, 14.2% of the total. Together its 5 incorporated places hold 20.7% of those residents; the other 79.3% live outside any of them. Reported testing is thin here: 2 tests over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Florida as a whole comes to 2.3.
From Chipley to Ebro, CDC publishes no figure by town: each reads Washington County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Chipley | 3,804 | +3.7% | 14.2% |
| Vernon | 755 | +4.0% | 2.8% |
| Wausau | 394 | +5.1% | 1.5% |
| Caryville | 323 | +5.6% | 1.2% |
| Ebro | 249 | +5.1% | 0.9% |
5 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 10,962 homes, 61% are detached houses, against 55% across Florida; 35% are mobile homes. Half of its homes were built before 1987, close to Florida's 1988: 13% date from before 1960 and 25% from 2000 or later. Owners live in 80% of the occupied homes (Florida: 67%), so for most households a test and a fix are their own to order.
| Homes | Washington County | Florida |
|---|---|---|
| Housing units | 10,962 | 10,082,356 |
| Detached houses | 61% | 55% |
| In buildings of 5 or more | 1% | 25% |
| Mobile homes | 35% | 8% |
| Built before 1960 | 13% | 10% |
| Built since 2000 | 25% | 30% |
| Middle year built | 1987 | 1988 |
| Owner-occupied | 80% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.