The IEP Group
Lexington, KY
Listed for: Testing
Verified:Ohio state license
Locations and reports
Radon in Lexington, Kentucky
EPA puts Fayette County, where Lexington is, in Zone 1, its highest radon zone, and high results are common there: 54.5% of the 5,263 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
54.5%
10.8 pts above KY
- Fayette
- 54.5%
- Kentucky
- 43.7%
Fayette, 10th of 69 in KY, 2008 to 2017
Median result
4.5pCi/L
Action level reached
- Fayette
- 4.5 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of Fayette's tests, 2008 to 2017
Nearest county
55.5%
Jessamine, 14 miles
- Jessamine
- 55.5%
- Fayette
- 54.5%
789 tests, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
Fayette, where Lexington is
Tests reported
5,263
In Fayette
- Fayette
- 5,263
- Jessamine
- 789
Reported to CDC before any fix, 2008 to 2017
Read a result for Lexington
Starts at Fayette County's median, 4.5 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.5 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. Fayette County's median reported result, 2008 to 2017.
The data
Lexington, What is published
What is published for Lexington
Information:
Every figure for Lexington is a county's
Radon data is published by county, not by city, so for Lexington it is Fayette County's: its EPA zone (Zone 1) and the 5,263 tests reported to CDC for 2008 to 2017, laboratory. Only a test tells you about one home.
Lexington covers 284 square miles of land, all of it in Fayette County. About 329,751 people live there, 1,163 to the square mile.
Lexington, Counties
The county Lexington lies in
MeasuredFayette County's EPA zone and the figures CDC publishes for it, 2008 to 2017, laboratory.
Fayette CountyZone 1Highest predicted potential
- 54.5%
- Reported tests at or above 4 pCi/L
- 4.5 pCi/L
- Median reported result
- 5,263 tests
- Tests reported to CDC
- None
- Yearly figures on file
Fayette County ranks 10th of 69 Kentucky counties with 30 or more tests for that period, 10.8 points above the 43.7% pooled across Kentucky's counties, 18.8 points above the national pool of 35.7%.
Measured from the middle of Lexington, the nearest counties with a CDC figure for 2008 to 2017, laboratory are Jessamine County (14 miles, 55.5% of 789 tests), Woodford County (16 miles, 57.9% of 342 tests) and Bourbon County (17 miles, 53.5% of 127 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 29.0% to 57.9%; the farthest of them, Mercer County, is 28 miles away at 38.2%.
The directory lists 1 business with an address in Lexington, 1 for testing. Kentucky's other cities with a page of their own: Louisville.
The counties around Lexington
By distance from the middle of Lexington; counties with 30 or more tests.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2008 to 2017, laboratory.
Lexington, Geology
The ground under Lexington
PredictedMost of the ground under Lexington is one class on USGS's geologic map: 76.8% of its land is high radon potential, with 23.2% moderate. The map puts 76.8% of Lexington in the area it calls Inner Bluegrass and 23.2% in Outer Bluegrass. USGS gives the first a radon index of 13, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Inner Bluegrass | Ordovician limestones, dolomites and shales. | High | 13 | 76.8% |
| Outer Bluegrass | Ordovician-Devonian limestone and shale. | Moderate | 11 | 23.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Lexington beside its county and Kentucky
The ground under Lexington is close to Fayette County's as a whole: 76.8% rated high against 76.8%. Lexington has more high-potential ground than Kentucky as a whole: 76.8% of its land against 18.2%.
The map rates the ground, not the air in any home.
Lexington, Homes
Homes in Lexington
Of Lexington's 147,720 homes, 58% are detached houses, against 58% across Fayette County; 26% are in buildings of five or more homes. Half of its homes were built before 1983, close to Fayette County's 1983: 18% date from before 1960 and 26% from 2000 or later. 54% of occupied homes are lived in by their owner (Fayette County: 54%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Lexington | Fayette County | Kentucky |
|---|---|---|---|
| Housing units | 147,720 | 147,720 | 2,010,655 |
| Detached houses | 58% | 58% | 68% |
| In buildings of 5 or more | 26% | 26% | 12% |
| Mobile homes | 1% | 1% | 11% |
| Built before 1960 | 18% | 18% | 22% |
| Built since 2000 | 26% | 26% | 24% |
| Middle year built | 1983 | 1983 | 1982 |
| Owner-occupied | 54% | 54% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.
Local help
Lexington, Professionals
Radon professionals listed in Lexington
Businesses whose listed city is Lexington, from the state registries and listings in the Radon411 directory, with the same business and certification status the directory shows.
Radon professionals listed in Lexington: 1 of 1
1 listing with Lexington as the city. See radon testing in Lexington, or all radon professionals in Kentucky.
Lexington, Local resources
Local resources for Lexington
Who to ask in Kentucky: its radon program, test kits and professionals.
What it means
Lexington, Questions
Questions about radon in Lexington
What radon zone is Lexington in?
Lexington takes its zone from Fayette County, which EPA puts in Zone 1, the map's highest class: a predicted county average above 4 pCi/L.
What are radon levels in Lexington?
High results are ordinary around Lexington: 54.5% of the 5,263 tests reported from Fayette County for 2008 to 2017 (laboratory totals) were at or above 4 pCi/L, the level at which EPA says to fix a home. The median reported result was 4.5 pCi/L.
Should I test my home in Lexington?
Yes. Fayette County reported about 2,868 of its 5,263 tests at or above 4 pCi/L. That is above Kentucky's pooled 43.7%, and ranks Fayette County 10th of the 69 Kentucky counties with 30 or more tests. Which homes they were, no map can say. How to test a home.
What ground is Lexington built on, as far as radon goes?
76.8% of Lexington sits on what USGS's map calls "Inner Bluegrass", rated high for radon potential, radon index 13; another 23.2% is "Outer Bluegrass", rated moderate for radon potential, radon index 11. So the ground changes within Lexington itself.
Is radon higher in the counties around Lexington?
It depends which way you go. 2 of the 8 nearest counties with a figure report a larger share than Fayette County's 54.5% and 6 a smaller one: from Clark County (29.0%, 18 miles off) to Woodford County (57.9%, 16 miles off).
Who tests for or fixes radon in Lexington?
Lexington is the address of one business in Radon411's directory, listed for testing, none for mitigation. Each entry names the public list it came from. Radon professionals in Lexington.
The answers use the published figures of Fayette County, the county Lexington lies in.
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