Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Westmoreland County, Virginia
EPA puts Westmoreland County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 10.7% of 56 (2008 to 2017, laboratory totals) reached 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
10.7%
19.7 pts below VA
- Westmoreland
- 10.7%
- Virginia
- 30.4%
56 tests, 2008 to 2017
Median result
1.4pCi/L
Below action level
- Westmoreland
- 1.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
56
68th of 84 by tests
- Westmoreland
- 56
- Fairfax
- 8,657
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Virginia
78 of 84
Lowest quarter
- Westmoreland
- 10.7%
- Russell
- 67.3%
By share, of 84 with 30+ tests
Read a result for Westmoreland County
Starts at Westmoreland County's median, 1.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.4 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Westmoreland County's median reported result, 2008 to 2017.
The data
Westmoreland County, At a glance
Westmoreland County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 93% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Westmoreland County, 2008 to 2017, laboratory
Under 2 pCi/L: 62%2 to 4 pCi/L: 27%4 pCi/L and above: 11%
Of 56 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 35 | 62.5% |
| 2 to 4 pCi/L | 15 | 26.8% |
| 4 pCi/L and above | 6 | 10.7% |
What these figures count
These are the 56 tests reported to CDC for Westmoreland 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).
Westmoreland County, Compared
Westmoreland County radon figures, compared
Calculated by Radon411Westmoreland County reports fewer high tests than Virginia overall. 10.7% of its 56 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 19.7 points below the 30.4% pooled from 131 Virginia counties.
Ordered from highest share down, it comes 78th of 84 Virginia counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Westmoreland County sits 25.0 points below it.
King George County, the one bordering county with a figure for the same period, reported 45.5%. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 10.7% share point the same way here.
Half the tests came in under 1.4 pCi/L and half over it; the single highest reached 21.0 pCi/L. The rest split 62.5% under 2 pCi/L and 26.8% from 2 to 4 (Virginia: 44.7% and 24.9%).
CDC's ten-year totals for Westmoreland County went from 24 tests (2005 to 2014) to 56 (2008 to 2017), the share going from 16.7% to 10.7%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Westmoreland County, Geology
The ground under Westmoreland County
PredictedUSGS's geologic map puts all of Westmoreland County's mapped land in one class: low radon potential. 92.8% of it lies in the area the map calls Tertiary Coastal Plain Sediments, 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 |
|---|---|---|---|---|
| Tertiary Coastal Plain Sediments | Tertiary Coastal Plain sand, silt, clay | Low | 8 | 92.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Westmoreland County beside the ground around it
Across Virginia 47.9% of the land is rated high; none of Westmoreland 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
Westmoreland County, Local resources
Radon testing and mitigation in Westmoreland 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
Westmoreland County, Questions
Questions about radon in Westmoreland County
Are radon levels high in Westmoreland County?
Over the 2008 to 2017 laboratory totals, 10.7% of the radon tests reported to CDC for Westmoreland County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of 84 Virginia counties with 30 or more tests for the same period, 77 reported a higher share; pooled, the state comes to 30.4%.
Which counties border Westmoreland County?
Westmoreland County borders 4 counties: Richmond County, Essex County, King George County and Northumberland County.
Products
Westmoreland County, Products
Testing a home in Westmoreland County
In Westmoreland County, 10.7% of 56 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 30.4% pooled across Virginia. 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 Westmoreland County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
RadonScan USB-powered radon monitor with a color screen
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 5 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Westmoreland County, Bordering counties
Counties bordering Westmoreland County
Calculated by Radon411- Radon levels in King George CountyEPA zone 3
45.5%at or above 4 pCi/L
Median 3.6 pCi/L · 488 tests · 34.8 points above Westmoreland County
- Radon levels in Richmond CountyEPA zone 3
24.1%at or above 4 pCi/L
Median 2.1 pCi/L · 29 tests · 13.4 points above Westmoreland County
- Radon levels in Northumberland CountyEPA zone 3
13.3%at or above 4 pCi/L
Median 1.0 pCi/L · 15 tests · 2.6 points above Westmoreland County
- Radon levels in Essex CountyEPA zone 3
7.7%at or above 4 pCi/L
Median 3.2 pCi/L · 13 tests · 3.0 points below Westmoreland County
Westmoreland County, Cities and towns
Cities and towns in Westmoreland County
Westmoreland County is growing: the Census Bureau puts it at 19,715 residents on July 1, 2025, up 6.5% from 18,513 in 2020. That works out to 86 people per square mile of land. Its largest town, Colonial Beach, has 4,151 residents, 21.1% of the total. Together its 2 incorporated places hold 22.8% of those residents; the other 77.2% live outside any of them. Reported testing is thin here: 56 tests over 2008 to 2017, or 2.8 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 6.0.
From Colonial Beach to Montross, CDC publishes no figure by town: each reads Westmoreland County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Colonial Beach | 4,151 | +6.2% | 21.1% |
| Montross | 353 | +6.0% | 1.8% |
2 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).
Westmoreland County, Homes
Homes in Westmoreland County
Westmoreland County is a place of houses on their own lots: 87% of its 11,300 homes are detached single-family houses, against 61% across Virginia. Half of its homes were built before 1983, close to Virginia's 1984: 24% date from before 1960 and 30% from 2000 or later. Owners live in 79% of the occupied homes (Virginia: 67%), so for most households a test and a fix are their own to order.
| Homes | Westmoreland County | Virginia |
|---|---|---|
| Housing units | 11,300 | 3,654,784 |
| Detached houses | 87% | 61% |
| In buildings of 5 or more | 2% | 19% |
| Mobile homes | 8% | 4% |
| Built before 1960 | 24% | 19% |
| Built since 2000 | 30% | 25% |
| Middle year built | 1983 | 1984 |
| Owner-occupied | 79% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.