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
Locations and reports
Radon Levels in Brooke County, West Virginia
EPA puts Brooke County in Zone 1, its highest radon zone, and high results are common there: 43.9% of the 157 radon tests reported to CDC (2008 to 2017, laboratory totals) came back at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
43.9%
6.4 pts above WV
- Brooke
- 43.9%
- WV
- 37.5%
157 tests, 2008 to 2017
Median result
3.4pCi/L
Below action level
- Brooke
- 3.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
157
15th of 27 by tests
- Brooke
- 157
- Berkeley
- 2,888
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in WV
6 of 27
Top quarter
- Brooke
- 43.9%
- Morgan
- 58.1%
By share, of 27 with 30+ tests
Read a result for Brooke County
Starts at Brooke County's median, 3.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.4 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Brooke County's median reported result, 2008 to 2017.
The data
Brooke County, At a glance
Brooke County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Brooke County in
USGS geologic potential: High across 90% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Brooke County, 2008 to 2017, laboratory
Under 2 pCi/L: 23%2 to 4 pCi/L: 33%4 pCi/L and above: 44%
Of 157 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 36 | 22.9% |
| 2 to 4 pCi/L | 52 | 33.1% |
| 4 pCi/L and above | 69 | 43.9% |
What these figures count
These are the 157 tests reported to CDC for Brooke County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Brooke County, Compared
Brooke County radon figures, compared
Calculated by Radon411In Brooke County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (69 of 157) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 8.2 points higher. Across 55 West Virginia counties pooled together, 37.5% of tests reached that level, so Brooke County runs 6.4 points above its state.
Of 4 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 37.9% (Washington County, PA) to 49.8% (Jefferson County, OH). By share, Brooke County is 6th of 27 West Virginia counties with 30 or more tests for the same period.
Half the tests came in under 3.4 pCi/L and half over it; the single highest reached 37.3 pCi/L. Below the action level, 36 tests (22.9%) came in under 2 pCi/L, against 37.7% statewide, and 52 tests (33.1%) fell between 2 and 4, against 24.7% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 43.9% share point the same way here. USGS geology rates 90% of the county's land high radon potential. CDC also counts 17 tests taken after mitigation in Brooke County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Brooke County went from 140 tests (2005 to 2014) to 157 (2008 to 2017), the share going from 44.3% to 43.9%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Brooke County, Geology
The ground under Brooke County
PredictedMost of the ground under Brooke County is one class on USGS's geologic map: 89.8% of its land is high radon potential, with 10.2% moderate. The map puts 88.7% of Brooke County in the area it calls Pennsylvanian Rocks of the Pittsburgh Low Plateau and 10.2% in Central Allegheny Plateau, with one smaller area beside them. USGS gives the first a radon index of 14, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Pennsylvanian Rocks of the Pittsburgh Low Plateau | Pennsylvanian marine shale, siltstone, sandstone, limestone, and coal. | High | 14 | 88.7% |
| Central Allegheny Plateau | Permian and Pennsylvanian shale, siltstone, sandstone, minor limestone. | Moderate | 10 | 10.2% |
| Area of Elevated Radioactivity | Pennsylvanian shale, sandstone, coal, and limestone. | High | 12 | 1.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Brooke County beside the ground around it
Brooke County has more high-potential ground than West Virginia as a whole: 89.8% of its land against 18.7%. Of the 4 counties that border it, 2 have more high-potential ground, Jefferson County, OH the most at 100%.
The map rates the ground, not the air in any home.
Local help
Brooke County, Local resources
Radon testing and mitigation in Brooke County
- OEHS Radon ProgramOEHS Radon Program, run by WV DHHR OEHS Radiation, Toxics & Indoor Air Division, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in West Virginia.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
West Virginia residents can request a free Radon Test Kit by emailing Radon@wv.gov or calling 304-352-5039
- Compare kits
- Professionals in West Virginia35 professionals are listed in West Virginia.
What West Virginia's program says
- Phone
- 304-352-5039
- Radon@wv.gov
- Licensing of radon professionals
Complete listings of professionals licensed to perform Asbestos, Lead, Radon and Clandestine Drug Laboratory Remediation activities in West Virginia.
What it means
Brooke County, Questions
Questions about radon in Brooke County
Are radon levels high in Brooke County?
Over the 2008 to 2017 laboratory totals, 43.9% of the radon tests reported to CDC for Brooke County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.4 pCi/L. Of 27 West Virginia counties with 30 or more tests for the same period, 5 reported a higher share; pooled, the state comes to 37.5%.
Which counties border Brooke County?
Brooke County borders 4 counties: Jefferson County, OH, Ohio County, WV, Hancock County, WV and Washington County, PA.
Products
Brooke County, Products
Testing a home in Brooke County
In Brooke County, 43.9% of 157 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 37.5% pooled across West Virginia. In Zone 1 the year-round level in Brooke County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
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
Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Brooke County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Brooke County
Explore
Brooke County, Bordering counties
Counties bordering Brooke County
Calculated by Radon411- Radon levels in Jefferson County, OHEPA zone 1
49.8%at or above 4 pCi/L
Median 3.9 pCi/L · 271 tests · 5.9 points above Brooke County
- Radon levels in Hancock County, WVEPA zone 1
49.1%at or above 4 pCi/L
Median 3.9 pCi/L · 326 tests · 5.2 points above Brooke County
- Radon levels in Ohio County, WVEPA zone 1
40.3%at or above 4 pCi/L
Median 3.2 pCi/L · 853 tests · 3.6 points below Brooke County
- Radon levels in Washington County, PAEPA zone 2
37.9%at or above 4 pCi/L
Median 3.0 pCi/L · 2,682 tests · 6.0 points below Brooke County
Brooke County, Cities and towns
Cities and towns in Brooke County
Brooke County has been losing residents: from 22,481 in 2020 to 21,142 on July 1, 2025, a fall of 6.0% by the Census Bureau's estimates. That works out to 237 people per square mile of land. Weirton, the largest place on its list (18,133 residents in all), extends beyond Brooke County, so no share of the total is worked out for it. CDC's 157 reported tests for 2008 to 2017 work out to 7.4 per 1,000 residents (2025 estimate), close to West Virginia's 5.7.
From Weirton to Windsor Heights, CDC publishes no figure by town: each reads Brooke County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Weirtonextends beyond Brooke County | 18,133 | −5.2% | Counted whole |
| Follansbee | 2,668 | −6.1% | 12.6% |
| Wellsburg | 2,255 | −7.0% | 10.7% |
| Bethany | 752 | −2.8% | 3.6% |
| Beech Bottom | 508 | −6.3% | 2.4% |
| Windsor Heights | 337 | −6.6% | 1.6% |
6 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 Brooke County is counted whole, so it has no share.
Brooke County, Homes
Homes in Brooke County
Of Brooke County's 10,700 homes, 72% are detached houses, against 71% across West Virginia; 10% are in buildings of five or more homes. The homes are older than West Virginia's as a whole: half were built before 1965 (1976 for West Virginia), and 44% date from before 1960. 73% of occupied homes are lived in by their owner (West Virginia: 74%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Brooke County | West Virginia |
|---|---|---|
| Housing units | 10,700 | 859,653 |
| Detached houses | 72% | 71% |
| In buildings of 5 or more | 10% | 8% |
| Mobile homes | 10% | 14% |
| Built before 1960 | 44% | 33% |
| Built since 2000 | 8% | 18% |
| Middle year built | 1965 | 1976 |
| Owner-occupied | 73% | 74% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.