Free testing, with limits
Some Florida county health departments may test for certain chemicals for free, so call yours first. Check which tests it includes before you count on it for uranium.
Florida's private well pageUranium in Florida well water, by county
Uranium is worth checking in 1 of the 10 Florida counties with 10 or more tested wells, and rare in the rest. A county's share tells you how likely a problem is nearby. Only a test of your own well tells you what's in it.
How Florida compares with the rest of the country
Across Florida, 2 of 474 tested wells had uranium over the EPA limit of 30 µg/L (2 of 474). Across all tested wells in the US it's about 1 in 22. That's less often than in the country as a whole. Counties still differ, so check yours below.
Why it matters: Drinking it for years can harm your kidneys and raises the risk of cancer.
Uranium comes out of the rock and sediment the wells draw from.
Uranium in tested wells, county by county
Share of each county's tested wells with at least one result over the EPA limit of 30 µg/L. Counties need 10 or more tested wells to be listed. Widespread means 15% or more, worth checking 5 to 15%, rare under 5%.
| County | Wells tested | Wells over the limit | Level |
|---|---|---|---|
| Hendry County | 20 | Worth checking | |
| Collier County | 50 | Rare | |
| Miami-Dade County | 88 | Rare | |
| Palm Beach County | 56 | Rare | |
| Hillsborough County | 49 | Rare | |
| Broward County | 29 | Rare | |
| Polk County | 15 | Rare | |
| St. Lucie County | 13 | Rare | |
| Martin County | 11 | Rare | |
| Pasco County | 10 | Rare |
40 more Florida counties have 1 to 9 tested wells for uranium, too few to rate.
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Where to get your well tested for uranium in Florida
A lab Florida certifies
Ask for uranium by name. Results from a certified lab count for a home sale or a loan.
Labs certified by FloridaA mail-in kit
Fill the bottles at your kitchen tap and mail them back. We mark the kits that include uranium.
Compare kitsKeep reading about wells in Florida
- Well water testing in Florida: how to get tested and what turns up statewide
- Uranium in well water: where it comes from, what it does and how to remove it
- Nitrate in Florida wells, by county
- Arsenic in Florida wells, by county
- Manganese in Florida wells, by county
- Lead in Florida wells, by county
- Radon in Florida wells, by county
Questions people ask about uranium in Florida
Is there uranium in Florida well water?
Uranium is worth checking in 1 of the 10 Florida counties with 10 or more tested wells, and rare in the rest. Across Florida, 2 of 474 tested wells had uranium over the EPA limit of 30 µg/L (2 of 474). Across all tested wells in the US it's about 1 in 22. That's less often than in the country as a whole. Counties still differ, so check yours below.
Where can I get my well tested for uranium in Florida?
Some Florida county health departments may test for certain chemicals for free, so call yours first. If that doesn't cover you, use a lab certified by Florida for drinking water, or a mail-in kit that includes uranium from a certified lab.
See Florida's list of certified labs, or compare mail-in kits.
Where these numbers come from
- Lab tests: Water Quality Portal (USGS and EPA), well samples since 2000. A well counts as over if any of its tests was over the EPA limit of 30 µg/L. Wells tested for studies and monitoring, not a random sample of homes.
- Likely overstated: our own check of who tested the wells, when and where. How we check.
- State programs and links: Department of Health.