Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Webster County, Mississippi
EPA puts Webster County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
18.6%
Franklin County, 100 miles
- Franklin
- 18.6%
Share at 4+ pCi/L, 210 tests, 2006 to 2015
Ground above low
None
8.1 pts below MS
- Webster
- 0.0%
- MS
- 8.1%
Share of land USGS rates moderate or high potential
Tests reported
0
None published
A home here needs its own test
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 Webster 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
Webster County, At a glance
Webster 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
No CDC test figures here
CDC has published no radon test figures for Webster County. Franklin County, AL, 100 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Webster County, Compared
Webster County radon figures, compared
Calculated by Radon411Webster County is in a state CDC's county radon counts do not reach: no Mississippi county has a figure, while 2,669 counties elsewhere do over the 2006 to 2015 laboratory totals. Across every county in the country with a figure (2,669), 36.3% of reported tests reached that level; no Mississippi county contributes to that pool.
The nearest counties with a figure are Franklin County, AL (100 miles away) at 18.6%, Tuscaloosa County, AL (104 miles away) at 10.1% and Fayette County, TN (109 miles away) at 13.1%.
EPA's 1993 map puts Webster 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.
Webster County, Geology
The ground under Webster County
PredictedUSGS's geologic map puts all of Webster County's mapped land in one class: low radon potential. All of it lies in the area the map calls North Central Hills/Flatwoods, 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 |
|---|---|---|---|---|
| North Central Hills/Flatwoods | Tertiary nonmarine to deltaic sediments ranging from sand to clay. | Low | 8 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Webster County beside the ground around it
Across Mississippi 0.1% of the land is rated high; none of Webster County's is. Of the 7 counties that border it, 3 have more moderate-potential ground, Clay County the most at 83.2%.
The map rates the ground, not the air in any home.
Local help
Webster County, Local resources
Radon testing and mitigation in Webster County
- Mississippi Radon ProgramMississippi Radon Program, run by Mississippi State Department of Health, answers questions about testing, mitigation and the rules in Mississippi.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Mississippi directoryNo professionals are listed in Mississippi yet. The state program can point you to registered testers and mitigators.
What Mississippi's program says
- Phone
- 1-800-626-7739
What it means
Webster County, Questions
Questions about radon in Webster County
Are radon levels high in Webster County?
No CDC testing statistics are published here for Webster County, Mississippi yet. Of the 8 nearest counties with a figure, within 129 miles, the share of tests at or above 4 pCi/L runs from 7.0% to 36.6%.
Which counties border Webster County?
Webster County borders 7 counties: Choctaw County, Montgomery County, Calhoun County, Oktibbeha County, Clay County, Chickasaw County and Grenada County.
Products
Webster County, Products
Testing a home in Webster County
No CDC figure names Webster County; the nearest county with one, Franklin County, AL (100 miles away), reported 18.6% of its tests at or above 4 pCi/L over the 2006 to 2015 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 Webster 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
View Radon Wi-Fi radon monitor with an e-paper display
- C-NRPP 2024/25: Approved
- Battery
- Wi-Fi, Bluetooth
- Screen, app
Method: Alpha spectrometry
Readings: Every 60 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Webster County, Bordering counties
Counties bordering Webster County
Calculated by Radon411counties bordering Webster County: 1 of 7
Webster County, Cities and towns
Cities and towns in Webster County
The Census Bureau estimates 10,167 residents in Webster County for July 1, 2025, 260 more than in 2020 (+2.6%). That works out to 24 people per square mile of land. Its largest town, Eupora, has 2,116 residents, 20.8% of the total.
From Eupora to Walthall, CDC publishes no figure by town: each reads Webster County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Eupora | 2,116 | +1.5% | 20.8% |
| Mathistonextends beyond Webster County | 886 | +6.0% | Counted whole |
| Mabenextends beyond Webster County | 773 | −0.3% | Counted whole |
| Mantee | 249 | +4.6% | 2.4% |
| Walthall | 117 | Level | 1.2% |
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). A place that extends beyond Webster County is counted whole, so it has no share.
Webster County, Homes
Homes in Webster County
Of Webster County's 5,094 homes, 72% are detached houses, against 69% across Mississippi; 19% are mobile homes. Half of its homes were built before 1982, close to Mississippi's 1986: 16% date from before 1960 and 20% from 2000 or later. Owners live in 78% of the occupied homes (Mississippi: 69%), so for most households a test and a fix are their own to order.
| Homes | Webster County | Mississippi |
|---|---|---|
| Housing units | 5,094 | 1,332,811 |
| Detached houses | 72% | 69% |
| In buildings of 5 or more | 3% | 9% |
| Mobile homes | 19% | 15% |
| Built before 1960 | 16% | 15% |
| Built since 2000 | 20% | 28% |
| Middle year built | 1982 | 1986 |
| Owner-occupied | 78% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.