Arsenic is worth checking in Citrus County wells.
1 worth checking, 4 rare out of 5 health checks.
From 101 wells tested in Citrus County since 2002; your own well needs its own test. How to read this
Not charted, because fewer than 10 wells were tested: uranium (1), radon (1).
Rare: under 5%Worth checking: 5 to 15%Widespread: 15%+
Lab results: Water Quality Portal (USGS and EPA)
Who drinks from a well here
1 in 3 people 56,288 people
Nobody else tests these wells. Only you do.
People on wells: EPA researchers' 2020 estimate
Radon risk (a gas from rock)
Possible here. A home air test is inexpensive.
Radon zones: EPA map
Here's how Citrus County compares with Florida and the counties around it.
Each result puts Citrus County next to the 4 counties that border it, on the chart's 0 to 50% scale.
This one is worth checking in Citrus County.
Arsenic1 of 17 wells over
These 4 are rare in Citrus County.
Nitrate1 of 78 wells over
Manganese1 of 83 wells over
Lead0 of 17 wells over
Fluoride0 of 83 wells over
Too few Citrus County wells were tested for these 2.
Uranium1 well tested
Radon in water1 well tested
Coliform bacteria turned up in 10 of 17 tested Citrus County wells, so test for it every year.
Coliform bacteria10 of 17 wells had it
Most of Florida's bacteria results come from shallow monitoring-network wells, so they aren't a guide to household wells.
E. coli0 of 9 wells had it
E. coli means human or animal waste is getting in, so if a test of your Citrus County well finds it, boil drinking water until the well is fixed.
Iron reached staining levels in 30 of 83 tested wells, and it isn't a health risk.
Iron stains30 of 83 wells had it
About 7 in 10 of the 101 wells tested in Citrus County have a test from 2020 or later.
With 75 wells tested since 2020, age matters less here than who did the testing and why.
Most Citrus County wells in these records were tested for research or because someone suspected a problem, which can push the shares above what a typical home well would show (how we read the numbers).
One mail-in lab test covers the 3 things to check in Citrus County.
- Bacteria
- Nitrate
- Arsenic
What Florida offers well owners
- Free testingSome county health departments may test for certain toxic substances free of charge. See the program
- Certified labsFlorida's list of certified labs
- Well recordsWe didn't find an online search.
- New wellsNo statewide rule, but Citrus County requires testing of new or repaired wells under a local rule.
Here's what we know about radon and PFAS in Citrus County.
Citrus County is in the EPA's middle radon zone. An indoor air test is cheap and tells you whether to look at your water. Radon guide
Between 2023 and 2025 the EPA had 10 town water systems in Citrus County test for PFAS. 3 of them had at least one test above 4 ng/L, the new EPA limit for PFOA and PFOS. The highest single result was 25 ng/L of PFOS. No well in Citrus County has public PFAS results, so the town systems are the best clue to what's in the groundwater nearby. PFAS guide
Radon zones: EPA Map of Radon Zones. PFAS: EPA tests of town water systems, 2023 to 2025
Questions people ask about well water in Citrus County
Is well water in Citrus County safe to drink?
1 of 17 wells tested in Citrus County had arsenic over the limit, about 1 in 17. Across Florida it's about 1 in 9. That's a bigger share than in 40 of the 63 other Florida counties with 10 or more tested wells. So test your own well for arsenic before you count on it.
Can I get my well tested for free in Citrus County?
Some county health departments may test for certain toxic substances free of charge. If not, use a lab Florida has certified for drinking water. Ask for bacteria, nitrate and arsenic, the tests that matter most in Citrus County.
How does Citrus County compare with the counties around it?
For arsenic, the share of tested wells over the limit: 2 of the 4 neighboring counties with data had a higher share than Citrus County, at 6%. Levy had the most, at 31%. Groundwater doesn't stop at county lines, so Levy's 31% is worth knowing about if you live near it.
How often should I test my well in Citrus County?
In Citrus County, 10 of 17 tested wells had coliform bacteria, so the CDC's advice matters here: test for bacteria and nitrate every year, and right away after a flood, a repair, or any change in taste or smell.
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Where the Citrus County numbers come from
- People on wells: 56,288 in Citrus County, from EPA estimates built on the 2020 Census (Murray et al.).
- Lab tests: 2,542 well water samples from 101 wells in the Water Quality Portal, run by the USGS and EPA, 2002 to 2025.
- Neighboring counties: the 4 counties that share a border with Citrus County, from the Census Bureau's county adjacency file.
- PFAS: EPA tests of 10 town water systems in Citrus County under the Fifth Unregulated Contaminant Monitoring Rule, 2023 to 2025.
- Radon: Citrus County is zone 2 on the EPA Map of Radon Zones.
- State programs and links: Department of Health, checked November 1, 2026.