
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
EPA puts Fluvanna County in Zone 1, its highest radon zone, and 28.1% of its 388 reported radon tests (2008 to 2017, laboratory totals) were 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
28.1%
2.3 pts below VA
388 tests, 2008 to 2017
Median result
2.5pCi/L
Below action level
Midpoint of the tests, 2008 to 2017
Tests reported
388
31st of 84 by tests
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Virginia
56 of 84
Middle half
By share, of 84 with 30+ tests
Read a result for Fluvanna County
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.5 pCi/L
Between 2 and 4 pCi/L
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Fluvanna County's median reported result, 2008 to 2017.
The data
Fluvanna County, At a glance
Predicted: EPA radon zone
EPA puts all of Fluvanna County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Of 388 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 161 | 41.5% |
| 2 to 4 pCi/L | 118 | 30.4% |
| 4 pCi/L and above | 109 | 28.1% |
These are the 388 tests reported to CDC for Fluvanna 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).
Fluvanna County, Compared
Fluvanna County's 388 reported tests over the 2008 to 2017 laboratory totals had a middle value of 2.5 pCi/L and a maximum of 23.0 pCi/L, and 28.1% reached 4 pCi/L. Virginia as a whole (131 Virginia counties, pooled) comes to 30.4%: 2.3 points higher than here.
Among its state's counties it ranks 56th of 84 Virginia counties with 30 or more tests for the same period. Statewide for the same period, Russell County reported the highest share (67.3%) and Norfolk city the lowest (2.7%).
Below the action level, 161 tests (41.5%) came in under 2 pCi/L, against 44.7% statewide, and 118 tests (30.4%) fell between 2 and 4, against 24.9% statewide. CDC's ten-year totals for Fluvanna County went from 329 tests (2005 to 2014) to 388 (2008 to 2017), the share going from 28.3% to 28.1%.
EPA's 1993 zone map puts Fluvanna County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.
Next door, the shares run from 24.7% in Albemarle County to 38.1% in Louisa County, with Albemarle County below Fluvanna County.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Fluvanna County, Geology
USGS's geologic map puts all of Fluvanna County's mapped land in one class: high radon potential. All of it lies in the area the map calls Inner Piedmont, to which USGS gives a radon index of 12, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Inner Piedmont | Granite, pegmatites, granitic gneiss, schist and gneiss, slate, and phyllite. | High | 12 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Fluvanna County has more high-potential ground than Virginia as a whole: 100% of its land against 47.9%. Of the 5 counties that border it, none has as large a share of high-potential ground; Louisa County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Fluvanna County, Local resources
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
Fluvanna County, Questions
Over the 2008 to 2017 laboratory totals, 28.1% of the radon tests reported to CDC for Fluvanna County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.5 pCi/L. Of 84 Virginia counties with 30 or more tests for the same period, 55 reported a higher share; pooled, the state comes to 30.4%.
Fluvanna County borders 5 counties: Albemarle County, Goochland County, Louisa County, Cumberland County and Buckingham County.
Products
Fluvanna County, Products
In Fluvanna County, 28.1% of 388 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 30.4% pooled across Virginia. In Zone 1 the year-round level in Fluvanna 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 monitors: 1 of 3
Fluvanna County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Fluvanna County
Explore
Fluvanna County, Bordering counties
38.1%at or above 4 pCi/L
Median 2.8 pCi/L · 289 tests · 10.0 points above Fluvanna County
30.7%at or above 4 pCi/L
Median 2.4 pCi/L · 114 tests · 2.6 points above Fluvanna County
24.7%at or above 4 pCi/L
Median 2.1 pCi/L · 2,179 tests · 3.4 points below Fluvanna County
16.7%at or above 4 pCi/L
Median 2.1 pCi/L · 12 tests · 11.4 points below Fluvanna County
13.8%at or above 4 pCi/L
Median 1.5 pCi/L · 29 tests · 14.3 points below Fluvanna County
Fluvanna County, Cities and towns
Fluvanna County is growing: the Census Bureau puts it at 28,975 residents on July 1, 2025, up 6.2% from 27,289 in 2020. That works out to 101 people per square mile of land. Scottsville, the largest place on its list (549 residents in all), extends beyond Fluvanna County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 388 reported tests for 2008 to 2017 come to 13.4 for every 1,000 residents (2025 estimate), against 6.0 for Virginia.
Scottsville is the one incorporated place here; CDC publishes no figure by town, so it reads Fluvanna County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Scottsvilleextends beyond Fluvanna County | 549 | +5.2% | 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 Fluvanna County is counted whole, so it has no share.
Fluvanna County, Homes
Fluvanna County is a place of houses on their own lots: 90% of its 11,329 homes are detached single-family houses, against 61% across Virginia. Much of Fluvanna County is recent building: 34% of its homes have gone up since 2000 and the middle year built is 1995, against 1984 for Virginia. Owners live in 88% of the occupied homes (Virginia: 67%), so for most households a test and a fix are their own to order.
| Homes | Fluvanna County | Virginia |
|---|---|---|
| Housing units | 11,329 | 3,654,784 |
| Detached houses | 90% | 61% |
| In buildings of 5 or more | 2% | 19% |
| Mobile homes | 6% | 4% |
| Built before 1960 | 11% | 19% |
| Built since 2000 | 34% | 25% |
| Middle year built | 1995 | 1984 |
| Owner-occupied | 88% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.