Locations and reports
Radon in Chattanooga, Tennessee
EPA puts Hamilton County, where Chattanooga is, in Zone 2, its middle radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
- Predicted
- Zone 2Moderate predicted potential
- Measured
2.4% of 169 tests reported to CDC for Hamilton County (2023) were at or above 4 pCi/L- Your home
- Test to knowNo area figure here is a reading of your home.
The data
Chattanooga, What is published
What is published for Chattanooga
Radon data is published by county, not by city
Radon data is published by county, not by city. EPA assigns radon zones to counties, and CDC publishes radon test figures by county. Neither publishes a figure for Chattanooga, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.
Hamilton County has an EPA zone and its own CDC test figures, shown below. About 194,144 people live in Chattanooga.
Chattanooga, Counties
The county Chattanooga lies in
MeasuredEach county's own EPA zone and its own published CDC figures for 2023, the newest period any of them has. A county without a figure for that period is shown without one, never with a figure from another year.
Hamilton CountyZone 2Moderate predicted potential
- 2.4%
- Reported tests at or above 4 pCi/L, 2023
- 0.7 pCi/L
- Median reported result
- 169 tests
- Tests reported to CDC
- 2
- Annual years on file
The median reported pre-mitigation result for 2023 was 0.7 pCi/L in Hamilton County.
CDC counts radon tests that were reported to it, not homes, and figures from few tests can swing widely from year to year. Each county’s report has its full history.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.
Radon Action Brief
National Radon Action MonthPre-sale
The radon brief for Chattanooga, in one dated file.
- Your area's radon record, explained. EPA's zone and any CDC tests.
- Your plan to test this week. Which test, where it goes, how long.
- Fix costs and pros near you. Costs, EPA's checklist, listed pros.
Save 64%Sale price: $8.99Price after the sale: $25Ends Jan 31Then $25Sale ends January 31, then $25
Local help
Chattanooga, Local resources
Local resources for Chattanooga
Who to ask in Tennessee: its radon program, test kits and professionals.
- Tennessee Radon ProgramDepartment of Environment & ConservationTennessee’s radon program answers questions about testing, mitigation and the rules where you live.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.
What Tennessee's program says
- Phone
- 1-800-232-1139
- TDEC.Radon@tn.gov
What it means
Chattanooga, Questions
Questions about radon in Chattanooga
What radon zone is Chattanooga in?
EPA's Map of Radon Zones classifies counties, not cities. Hamilton County is in Zone 2 (moderate predicted potential). A zone is a prediction for a whole county and never tells you the level in one home.
How many radon tests come back high in Chattanooga's counties?
For 2023, the share of radon tests reported to CDC that were at or above 4 pCi/L was 2.4% in Hamilton County (169 tests). Each is that county's own figure, counting tests reported to CDC, not homes. Radon411 does not average or combine them into a figure for the city.
Should I test my home in Chattanooga?
Yes. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. How to test a home.
The answers use the published figures of Hamilton County, the county Chattanooga lies in.
Explore
Chattanooga, Next steps
What to do next
What to do next: 1 of 4