Listed for: Mitigation
Verified:Florida state license
Call Longleaf Environmental Consulting at (352) 682-0526No website listed
Locations and reports
Radon in Gainesville, Florida
EPA puts Alachua County, where Gainesville is, in Zone 2, its middle radon zone, and 21.4% of its 659 reported radon tests (2023) 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
21.4%
2.9 pts above FL
- Alachua
- 21.4%
- Florida
- 18.5%
Alachua, 6th of 30 in FL, 2023
Median result
2.4pCi/L
Below action level
- Alachua
- 2.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of Alachua's tests, 2023
Nearest county
0.0%
Clay, 36 miles
- Clay
- 0.0%
- Alachua
- 21.4%
36 tests, 2023
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
Alachua, where Gainesville is
Tests reported
659
In Alachua
- Alachua
- 659
- Clay
- 36
Reported to CDC before any fix, 2023
Read a result for Gainesville
Starts at Alachua County's median, 2.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.4 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Alachua County's median reported result, 2023.
The data
Gainesville, What is published
What is published for Gainesville
Information:
Every figure for Gainesville is a county's
Radon data is published by county, not by city, so for Gainesville it is Alachua County's: its EPA zone (Zone 2) and the 659 tests reported to CDC for 2023. Only a test tells you about one home.
Gainesville covers 63.2 square miles of land, all of it in Alachua County. About 148,671 people live there, 2,354 to the square mile.
Gainesville, Counties
The county Gainesville lies in
MeasuredAlachua County's EPA zone and the figures CDC publishes for it, 2023.
Alachua CountyZone 2Moderate predicted potential
- 21.4%
- Reported tests at or above 4 pCi/L
- 2.4 pCi/L
- Median reported result
- 659 tests
- Tests reported to CDC
- 10
- Annual years on file
Alachua County ranks 6th of 30 Florida counties with 30 or more tests for that period, 2.9 points above the 18.5% pooled across Florida's counties, 12.0 points below the national pool of 33.4%.
Measured from the middle of Gainesville, the nearest counties with a CDC figure for 2023 are Clay County (36 miles, 0.0% of 36 tests), Marion County (37 miles, 44.5% of 182 tests) and Baker County (45 miles, 0.0% of 48 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 0.0% to 44.5%; the farthest of them, Volusia County, is 82 miles away at 1.2%.
The directory lists 2 businesses with an address in Gainesville, 1 for testing and 1 for mitigation. Florida's other cities with a page of their own: Naples, Miami, Venice and Fort Myers.
The counties around Gainesville
By distance from the middle of Gainesville; counties with 30 or more tests.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.
Gainesville, Geology
The ground under Gainesville
PredictedUSGS's geologic map splits Gainesville: 58.3% of its land is moderate radon potential and 41.7% low. The map puts 58.3% of Gainesville in the area it calls Highland Anomalous areas and 41.7% in Gulf/Atlantic Lowland and Central Highland. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Highland Anomalous areas | Phosphate deposits. | Moderate | 11 | 58.3% |
| Gulf/Atlantic Lowland and Central Highland | sand, silt, clay, gravel | Low | 6 | 41.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Gainesville beside its county and Florida
Gainesville sits on more moderate-potential ground than Alachua County as a whole: 58.3% of the city against 47.3% of the county. Gainesville has more moderate-potential ground than Florida as a whole: 58.3% of its land against 7.1%.
The map rates the ground, not the air in any home.
Gainesville, Homes
Homes in Gainesville
Gainesville has 65,747 homes, and many share a building: 43% are in buildings of five or more, 38% are detached houses, against 51% across Alachua County. Half of its homes were built before 1983, close to Alachua County's 1987: 13% date from before 1960 and 22% from 2000 or later. Most occupied homes here are rented: owners live in 38% (Alachua County: 54%). A tenant can run a test; a fix is the landlord's to make.
| Homes | Gainesville | Alachua County | Florida |
|---|---|---|---|
| Housing units | 65,747 | 125,702 | 10,082,356 |
| Detached houses | 38% | 51% | 55% |
| In buildings of 5 or more | 43% | 29% | 25% |
| Mobile homes | 2% | 7% | 8% |
| Built before 1960 | 13% | 10% | 10% |
| Built since 2000 | 22% | 28% | 30% |
| Middle year built | 1983 | 1987 | 1988 |
| Owner-occupied | 38% | 54% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.
Local help
Gainesville, Professionals
Radon professionals listed in Gainesville
Businesses whose listed city is Gainesville, from the state registries and listings in the Radon411 directory, with the same business and certification status the directory shows.
Radon professionals listed in Gainesville: 1 of 2
2 listings with Gainesville as the city. See radon mitigation and testing in Gainesville, or all radon professionals in Florida.
Gainesville, Local resources
Local resources for Gainesville
Who to ask in Florida: its radon program, test kits and professionals.
What it means
Gainesville, Questions
Questions about radon in Gainesville
What radon zone is Gainesville in?
Gainesville has no zone of its own: it shares Alachua County's, Zone 2, the map's middle class: a predicted county average of 2 to 4 pCi/L.
What are radon levels in Gainesville?
Most tests near Gainesville come back under EPA's action level, but not all: 21.4% of Alachua County's 659 tests for 2023 were at or above 4 pCi/L. The median reported result was 2.4 pCi/L.
Should I test my home in Gainesville?
Yes. In Alachua County, about one reported test in 5 reached 4 pCi/L. That is above Florida's pooled 18.5%, and ranks Alachua County 6th of the 30 Florida counties with 30 or more tests. The number for one house comes only from testing it. How to test a home.
What ground is Gainesville built on, as far as radon goes?
58.3% of Gainesville sits on what USGS's map calls "Highland Anomalous areas", rated moderate for radon potential, radon index 11; another 41.7% is "Gulf/Atlantic Lowland and Central Highland", rated low for radon potential, radon index 6. So the ground changes within Gainesville itself.
Is radon higher in the counties around Gainesville?
It depends which way you go. 1 of the 8 nearest counties with a figure report a larger share than Alachua County's 21.4% and 7 a smaller one: from Clay County (0.0%, 36 miles off) to Marion County (44.5%, 37 miles off).
Who tests for or fixes radon in Gainesville?
Gainesville is the address of 2 businesses in Radon411's directory, 1 listed for testing and 1 for mitigation. Each entry names the public list it came from. Radon professionals in Gainesville.
The answers use the published figures of Alachua County, the county Gainesville lies in.
Explore