Locations and reports
Radon in Cleveland, Tennessee
EPA puts Bradley County, where Cleveland is, in Zone 1, its highest radon zone, and 25.7% of its 105 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
25.7%
0.8 pts above TN
- Bradley
- 25.7%
- Tennessee
- 24.9%
Bradley, 6th of 15 in TN, 2023
Median result
2.2pCi/L
Below action level
- Bradley
- 2.2 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of Bradley's tests, 2023
Nearest county
2.4%
Hamilton, 17 miles
- Hamilton
- 2.4%
- Bradley
- 25.7%
169 tests, 2023
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
Bradley, where Cleveland is
Tests reported
105
In Bradley
- Bradley
- 105
- Hamilton
- 169
Reported to CDC before any fix, 2023
Read a result for Cleveland
Starts at Bradley County's median, 2.2 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.2 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. Bradley County's median reported result, 2023.
The data
Cleveland, What is published
What is published for Cleveland
Every figure for Cleveland is a county's
Radon data is published by county, not by city, so for Cleveland it is Bradley County's: its EPA zone (Zone 1) and the 105 tests reported to CDC for 2023. Only a test tells you about one home.
Cleveland covers 27.1 square miles of land, all of it in Bradley County. About 51,172 people live there, 1,889 to the square mile.
Cleveland, Counties
The county Cleveland lies in
MeasuredBradley County's EPA zone and the figures CDC publishes for it, 2023.
Bradley CountyZone 1Highest predicted potential
- 25.7%
- Reported tests at or above 4 pCi/L
- 2.2 pCi/L
- Median reported result
- 105 tests
- Tests reported to CDC
- 2
- Annual years on file
Bradley County ranks 6th of 15 Tennessee counties with 30 or more tests for that period, 0.8 points above the 24.9% pooled across Tennessee's counties, 7.7 points below the national pool of 33.4%.
Measured from the middle of Cleveland, the nearest counties with a CDC figure for 2023 are Hamilton County (17 miles, 2.4% of 169 tests), Loudon County (49 miles, 40.2% of 82 tests) and Blount County (64 miles, 50.0% of 46 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 2.4% to 50.0%; the farthest of them, Wilson County, is 105 miles away at 2.4%.
No business in the directory gives Cleveland as its address; the Tennessee list covers it. Tennessee's other cities with a page of their own: Nashville, Knoxville, Chattanooga and Johnson City.
The counties around Cleveland
By distance from the middle of Cleveland; counties with 30 or more tests.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.
Cleveland, Geology
The ground under Cleveland
PredictedUSGS's geologic map puts all of Cleveland's mapped land in one class: high radon potential. All of it lies in the area the map calls Ridge and Valley, to which USGS gives a radon index of 14, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Ridge and Valley | Paleozoic sandstone and cherty dolostone. | High | 14 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cleveland beside its county and Tennessee
The ground under Cleveland is close to Bradley County's as a whole: 100% rated high against 99.7%. Cleveland has more high-potential ground than Tennessee as a whole: 100% of its land against 47.2%.
The map rates the ground, not the air in any home.
Cleveland, Homes
Homes in Cleveland
Of Cleveland's 19,908 homes, 57% are detached houses, against 70% across Bradley County; 18% are in buildings of five or more homes. Half of its homes were built before 1982, close to Bradley County's 1985: 16% date from before 1960 and 25% from 2000 or later. 50% of occupied homes are lived in by their owner (Bradley County: 68%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Cleveland | Bradley County | Tennessee |
|---|---|---|---|
| Housing units | 19,908 | 45,411 | 3,095,472 |
| Detached houses | 57% | 70% | 68% |
| In buildings of 5 or more | 18% | 8% | 14% |
| Mobile homes | 4% | 9% | 8% |
| Built before 1960 | 16% | 14% | 18% |
| Built since 2000 | 25% | 26% | 29% |
| Middle year built | 1982 | 1985 | 1986 |
| Owner-occupied | 50% | 68% | 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
Cleveland, Local resources
Local resources for Cleveland
Who to ask in Tennessee: its radon program, test kits and professionals.
- Tennessee Radon ProgramRun by Department of Environment & Conservation, phone 1-800-232-1139.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Tennessee Radon Program provides free radon test kits and information assistance to residents, while also providing training opportunities to radon professionals across the state.
- Compare kits
- Professionals in TennesseeRadon testers and mitigators in Tennessee, each with how its listing was checked.
The program's own words on licensing are on the Tennessee page.
What it means
Cleveland, Questions
Questions about radon in Cleveland
What radon zone is Cleveland in?
Cleveland takes its zone from Bradley 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 Cleveland?
Around Cleveland, 25.7% of 105 tests reported from Bradley County for 2023 reached 4 pCi/L or more, so a high result is no surprise here. The median reported result was 2.2 pCi/L.
Should I test my home in Cleveland?
Yes. Bradley County reported about 27 of its 105 tests at or above 4 pCi/L. That is about what Tennessee as a whole reports (24.9%), and ranks Bradley County 6th of the 15 Tennessee counties with 30 or more tests. Which homes they were, no map can say. How to test a home.
What ground is Cleveland built on, as far as radon goes?
USGS's geologic map puts all of Cleveland on one named area, "Ridge and Valley", rated high for radon potential, radon index 14.
Is radon higher in the counties around Cleveland?
It depends which way you go. 2 of the 8 nearest counties with a figure report a larger share than Bradley County's 25.7% and 6 a smaller one: from Hamilton County (2.4%, 17 miles off) to Blount County (50.0%, 64 miles off).
The answers use the published figures of Bradley County, the county Cleveland lies in.
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