Locations and reports
Radon in Tucson, Arizona
EPA puts Pima County, where Tucson 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
6.8% of 410 tests reported to CDC for Pima County (2008 to 2017, laboratory) were at or above 4 pCi/L- Your home
- Test to knowNo area figure here is a reading of your home.
The data
Tucson, What is published
What is published for Tucson
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 Tucson, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.
Pima County has an EPA zone and its own CDC test figures, shown below. About 548,371 people live in Tucson.
Tucson, Counties
The county Tucson lies in
MeasuredEach county's own EPA zone and its own published CDC figures for 2008 to 2017, laboratory, 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.
Pima CountyZone 2Moderate predicted potential
- 6.8%
- Reported tests at or above 4 pCi/L, 2008 to 2017, laboratory
- 1.1 pCi/L
- Median reported result
- 410 tests
- Tests reported to CDC
- 0
- Annual years on file
The median reported pre-mitigation result for 2008 to 2017, laboratory was 1.1 pCi/L in Pima 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, 2008 to 2017, laboratory.
Radon Action Brief
National Radon Action MonthPre-sale
The radon brief for Tucson, 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.
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Local help
Tucson, Local resources
Local resources for Tucson
Who to ask in Arizona: its radon program, test kits and professionals.
- Arizona's radon programArizona Department of Health ServicesArizona’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 kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in ArizonaRadon testers and mitigators in Arizona, each with how its listing was checked.
What it means
Tucson, Questions
Questions about radon in Tucson
What radon zone is Tucson in?
EPA's Map of Radon Zones classifies counties, not cities. Pima 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 Tucson's counties?
For 2008 to 2017, laboratory, the share of radon tests reported to CDC that were at or above 4 pCi/L was 6.8% in Pima County (410 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 Tucson?
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 Pima County, the county Tucson lies in.
Explore
Tucson, Next steps
What to do next
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