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 Cumberland County, Virginia
EPA puts Cumberland County in Zone 1, its highest radon zone, and only 12 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
40.9%
Prince Edward County
- Prince Edward
- 40.9%
- Fluvanna
- 29.5%
3 of 6 neighbours have 30+ tests, 2006 to 2015
Nearest county
40.9%
Prince Edward County, 23 miles
- Prince Edward
- 40.9%
- Virginia
- 30.7%
Share at 4+ pCi/L, 44 tests, 2006 to 2015
Ground above low
100.0%
22.1 pts above Virginia
- Cumberland
- 100.0%
- Virginia
- 77.9%
Share of land USGS rates moderate or high potential
Tests reported
12
Too few for a share
- Cumberland
- 12
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Read a result for Cumberland 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
Cumberland County, At a glance
Cumberland County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Cumberland County in
USGS geologic potential: High across 71% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Cumberland County, 2008 to 2017, laboratory
CDC holds 12 reported tests for Cumberland County over the 2008 to 2017 laboratory totals, with a median of 2.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Cumberland County beside the counties around it is how this page reads it.
What these figures count
Only 12 tests were reported to CDC for Cumberland 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).
Cumberland County, Compared
Cumberland County radon figures, compared
Calculated by Radon411CDC's largest figure for Cumberland County rests on 12 tests over the 2008 to 2017 laboratory totals, 2 of them at or above 4 pCi/L, so each test moves its share by 8.3 points and no rank or comparison is drawn from it. Results reached as high as 9.3 pCi/L, with a middle value of 2.1 pCi/L.
Of the counties bordering it, 3 have a figure over the 2006 to 2015 laboratory totals: Prince Edward County reported the largest share at or above 4 pCi/L, 40.9%, and Fluvanna County the smallest, 29.5%, with Goochland County at 31.3% between. Farther out, Appomattox County (33 miles away) at 16.7%, Louisa County (36 miles away) at 38.2% and Chesterfield County (37 miles away) at 30.5% have figures too. Pooled across 132 Virginia counties, 30.7% of reported tests reached that level; across every county in the country with a figure, 36.3%.
Statewide for the same period, Russell County reported the highest share (68.5%) and Norfolk city the lowest (5.3%). EPA's 1993 map puts Cumberland County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 71% of the county's land high radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Cumberland County, Geology
The ground under Cumberland County
PredictedUSGS's geologic map splits Cumberland County: 71.2% of its land is high radon potential and 28.8% moderate. The map puts 46.6% of Cumberland County in the area it calls Goochland Terrane and 24.7% in Inner Piedmont, with 2 smaller areas beside them. USGS gives the first a radon index of 13 and the second 12, both in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Goochland Terrane | Granite, pegmatites, granitic gneiss, schist and gneiss, slate, and phyllite. | High | 13 | 46.6% |
| Inner Piedmont | Granite, pegmatites, granitic gneiss, schist and gneiss, slate, and phyllite. | High | 12 | 24.7% |
| Carolina Terrane | Metavolcanic rocks, granite and granitic gneiss. | Moderate | 10 | 16.5% |
| Mesozoic Basins | Sandstone, siltstone and lacustrine black shale. | Moderate | 11 | 12.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cumberland County beside the ground around it
Cumberland County has more high-potential ground than Virginia as a whole: 71.2% of its land against 47.9%. Of the 6 counties that border it, 4 have more high-potential ground, Fluvanna County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Cumberland County, Local resources
Radon testing and mitigation in Cumberland County
- VDH Radon ProgramVDH Radon Program answers questions about testing, mitigation and the rules in Virginia.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
- Professionals in Virginia2 professionals are listed in Virginia.
What Virginia's program says
- Phone
- (804) 864-8161
- Radon@vdh.virginia.gov
- Licensing of radon professionals
The Code of Virginia requires that Radon testers and mitigators be currently certified by either the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB).
What it means
Cumberland County, Questions
Questions about radon in Cumberland County
Are radon levels high in Cumberland County?
Over the 2008 to 2017 laboratory totals, 16.7% of the radon tests reported to CDC for Cumberland County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.1 pCi/L. Of the counties bordering it, 3 have a figure over the 2006 to 2015 laboratory totals: Prince Edward County reported the largest share at or above 4 pCi/L, 40.9%, and Fluvanna County the smallest, 29.5%, with Goochland County at 31.3% between.
Which counties border Cumberland County?
Cumberland County borders 6 counties: Amelia County, Powhatan County, Buckingham County, Goochland County, Fluvanna County and Prince Edward County.
Products
Cumberland County, Products
Testing a home in Cumberland County
No CDC figure names Cumberland County; the nearest county with one, Prince Edward County (23 miles away), reported 40.9% 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. In Zone 1 the year-round level in Cumberland 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
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Cumberland County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Cumberland County
Explore
Cumberland County, Bordering counties
Counties bordering Cumberland County
Calculated by Radon411- Radon levels in Amelia CountyEPA zone 1
45.5%at or above 4 pCi/L
Median 3.9 pCi/L · 11 tests
- Radon levels in Prince Edward CountyEPA zone 2
40.9%at or above 4 pCi/L
Median 3.0 pCi/L · 44 tests
- Radon levels in Goochland CountyEPA zone 1
31.3%at or above 4 pCi/L
Median 2.5 pCi/L · 112 tests
- Radon levels in Fluvanna CountyEPA zone 1
29.5%at or above 4 pCi/L
Median 2.6 pCi/L · 356 tests
- Radon levels in Powhatan CountyEPA zone 1
25.0%at or above 4 pCi/L
Median 1.5 pCi/L · 28 tests
- Radon levels in Buckingham CountyEPA zone 1
14.3%at or above 4 pCi/L
Median 2.2 pCi/L · 21 tests
Cumberland County, Cities and towns
Cities and towns in Cumberland County
Cumberland County is growing: the Census Bureau puts it at 10,352 residents on July 1, 2025, up 6.9% from 9,680 in 2020. That works out to 35 people per square mile of land. Farmville, the largest place on its list (7,593 residents in all), extends beyond Cumberland County, so no share of the total is worked out for it. Reported testing is thin here: 12 tests over 2008 to 2017, or 1.2 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 6.0.
Farmville is the one incorporated place here; CDC publishes no figure by town, so it reads Cumberland County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Farmvilleextends beyond Cumberland County | 7,593 | +0.7% | Counted whole |
One incorporated place, 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 Cumberland County is counted whole, so it has no share.
Cumberland County, Homes
Homes in Cumberland County
Of Cumberland County's 4,695 homes, 73% are detached houses, against 61% across Virginia; 22% are mobile homes. Half of its homes were built before 1983, close to Virginia's 1984: 19% date from before 1960 and 18% from 2000 or later. Owners live in 75% of the occupied homes (Virginia: 67%), so for most households a test and a fix are their own to order.
| Homes | Cumberland County | Virginia |
|---|---|---|
| Housing units | 4,695 | 3,654,784 |
| Detached houses | 73% | 61% |
| In buildings of 5 or more | 1% | 19% |
| Mobile homes | 22% | 4% |
| Built before 1960 | 19% | 19% |
| Built since 2000 | 18% | 25% |
| Middle year built | 1983 | 1984 |
| Owner-occupied | 75% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.