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 Bath County, Virginia
EPA puts Bath County in Zone 1, its highest radon zone, and only 22 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
50.9%
Rockbridge County
- Rockbridge
- 50.9%
- Alleghany
- 44.4%
4 of 6 neighbours have 30+ tests, 2006 to 2015
Nearest county
50.9%
Rockbridge County, 23 miles
- Rockbridge
- 50.9%
- Virginia
- 30.7%
Share at 4+ pCi/L, 112 tests, 2006 to 2015
Ground above low
100.0%
22.1 pts above Virginia
- Bath
- 100.0%
- Virginia
- 77.9%
Share of land USGS rates moderate or high potential
Tests reported
23
Too few for a share
- Bath
- 23
- Needed
- 30
2006 to 2015, 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 Bath 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
Bath County, At a glance
Bath County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Bath County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Bath County, 2008 to 2017, laboratory
CDC holds 22 reported tests for Bath County over the 2008 to 2017 laboratory totals, with a median of 2.3 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Bath County beside the counties around it is how this page reads it.
What these figures count
Only 22 tests were reported to CDC for Bath 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).
Bath County, Compared
Bath County radon figures, compared
Calculated by Radon411CDC's largest figure for Bath County rests on 23 tests over the 2006 to 2015 laboratory totals, 4 of them at or above 4 pCi/L, so each test moves its share by 4.3 points and no rank or comparison is drawn from it. Results reached as high as 25.8 pCi/L, with a middle value of 2.1 pCi/L.
Of the counties bordering it, 4 have a figure over the 2006 to 2015 laboratory totals: Rockbridge County reported the largest share at or above 4 pCi/L, 50.9%, and Alleghany County the smallest, 44.4%, with Greenbrier County, WV at 50.5% and Augusta County at 49.5% between. Farther out, Botetourt County (35 miles away) at 40.2%, Staunton city (38 miles away) at 54.3% and Amherst County (45 miles away) at 33.8% 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 Bath County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Bath County, Geology
The ground under Bath County
PredictedUSGS's geologic map puts all of Bath County's mapped land in one class: high radon potential. All of it lies in the area the map calls Valley and Ridge, to which USGS gives a radon index of 15, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Valley and Ridge | Cambrian dolomite, limestone, shale, and sandstone, Silurian-Ordovician limestone, dolomite, shale, and sandstone, Mississippian-Devonian sandstone, shale, limestone, gypsum, and coal. | High | 15 | 99.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Bath County beside the ground around it
Bath County has more high-potential ground than Virginia as a whole: 100% of its land against 47.9%. Of the 6 counties that border it, none has as large a share of high-potential ground; Highland County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Bath County, Local resources
Radon testing and mitigation in Bath 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
Bath County, Questions
Questions about radon in Bath County
Are radon levels high in Bath County?
Over the 2008 to 2017 laboratory totals, 18.2% of the radon tests reported to CDC for Bath County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.3 pCi/L. Of the counties bordering it, 4 have a figure over the 2006 to 2015 laboratory totals: Rockbridge County reported the largest share at or above 4 pCi/L, 50.9%, and Alleghany County the smallest, 44.4%, with Greenbrier County, WV at 50.5% and Augusta County at 49.5% between.
Which counties border Bath County?
Bath County borders 6 counties: Rockbridge County, VA, Augusta County, VA, Alleghany County, VA, Pocahontas County, WV, Highland County, VA and Greenbrier County, WV.
Products
Bath County, Products
Testing a home in Bath County
No CDC figure names Bath County; the nearest county with one, Rockbridge County (23 miles away), reported 50.9% 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 Bath 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
RadonPro Wi-Fi radon monitor with a built-in Geiger counter
- C-NRPP 2024/25: Not included
- Plug-in
- Wi-Fi
- Alarm
- Screen, app
First reading: Within 5 minutes
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
Bath County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Bath County
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Bath County, Bordering counties
Counties bordering Bath County
Calculated by Radon411- Radon levels in Rockbridge County, VAEPA zone 1
50.9%at or above 4 pCi/L
Median 4.3 pCi/L · 112 tests
- Radon levels in Greenbrier County, WVEPA zone 1
50.5%at or above 4 pCi/L
Median 4.2 pCi/L · 190 tests
- Radon levels in Augusta County, VAEPA zone 1
49.5%at or above 4 pCi/L
Median 3.9 pCi/L · 606 tests
- Radon levels in Pocahontas County, WVEPA zone 1
45.5%at or above 4 pCi/L
Median 2.7 pCi/L · 11 tests
- Radon levels in Alleghany County, VAEPA zone 1
44.4%at or above 4 pCi/L
Median 3.5 pCi/L · 54 tests
- Radon levels in Highland County, VAEPA zone 1
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 6 tests
Bath County, Residents
Who lives in Bath County
About 4,076 people live in Bath County by the Census Bureau's estimate for July 1, 2025, 109 fewer than in 2020 (−2.6%). Spread over its land, that is 7.7 people to the square mile. CDC's 23 reported tests for 2006 to 2015 work out to 5.6 per 1,000 residents (2025 estimate), close to Virginia's 5.0.
Census lists no incorporated place in Bath County: every home in it reads the county's figures.
Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Bath County, Homes
Homes in Bath County
Bath County is a place of houses on their own lots: 81% of its 3,336 homes are detached single-family houses, against 61% across Virginia. The homes are older than Virginia's as a whole: half were built before 1976 (1984 for Virginia), and 34% date from before 1960. 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 | Bath County | Virginia |
|---|---|---|
| Housing units | 3,336 | 3,654,784 |
| Detached houses | 81% | 61% |
| In buildings of 5 or more | 3% | 19% |
| Mobile homes | 12% | 4% |
| Built before 1960 | 34% | 19% |
| Built since 2000 | 24% | 25% |
| Middle year built | 1976 | 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.