Arsenic is worth checking in Brevard County wells.
1 worth checking, 4 rare out of 5 health checks.
From 54 wells tested in Brevard County since 2015; your own well needs its own test. How to read this
Not charted, because fewer than 10 wells were tested: uranium (6), radon (6).
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 6 people 102,099 people
Nobody else tests these wells. Only you do.
People on wells: EPA researchers' 2020 estimate
Radon risk (a gas from rock)
Less likely, but the EPA still says test your air.
Radon zones: EPA map
Here's how Brevard County compares with Florida and the counties around it.
Each result puts Brevard County next to the 5 counties that border it, on the chart's 0 to 50% scale.
This one is worth checking in Brevard County.
Arsenic3 of 50 wells over
These 4 are rare in Brevard County.
Lead0 of 54 wells over
Nitrate0 of 40 wells over
Fluoride0 of 24 wells over
Manganese0 of 54 wells over
Too few Brevard County wells were tested for these 2.
Uranium6 wells tested
Radon in water6 wells tested
Coliform bacteria turned up in 9 of 24 tested Brevard County wells, so test for it every year.
Coliform bacteria9 of 24 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. coli1 of 12 wells had it
Too few tested to show: Indian River.
E. coli means human or animal waste is getting in, so if a test of your Brevard County well finds it, boil drinking water until the well is fixed.
Iron reached staining levels in 17 of 54 tested wells, and it isn't a health risk.
Iron stains17 of 54 wells had it
About 7 in 10 of the 54 wells tested in Brevard County have a test from 2020 or later.
With 37 wells tested since 2020, age matters less here than who did the testing and why.
Most Brevard 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 Brevard 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 Brevard County requires testing of new or repaired wells under a local rule.
Here's what we know about radon and PFAS in Brevard County.
Brevard County is in the EPA's lowest radon zone, so radon from well water is unlikely to be a problem. Radon guide
Between 2023 and 2025 the EPA had 10 town water systems in Brevard County test for PFAS. 4 of them had at least one test above 4 ng/L, the new EPA limit for PFOA and PFOS. The highest single result was 15 ng/L of PFOS. No well in Brevard 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 Brevard County
Is well water in Brevard County safe to drink?
3 of 50 wells tested in Brevard 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 41 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 Brevard 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 Brevard County.
How does Brevard County compare with the counties around it?
For arsenic, the share of tested wells over the limit: Brevard County, at 6%, had a higher share than all 5 neighboring counties with data. Groundwater doesn't stop at county lines, so Orange's 3% is worth knowing about if you live near it.
How often should I test my well in Brevard County?
In Brevard County, 9 of 24 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 Brevard County numbers come from
- People on wells: 102,099 in Brevard County, from EPA estimates built on the 2020 Census (Murray et al.).
- Lab tests: 1,069 well water samples from 54 wells in the Water Quality Portal, run by the USGS and EPA, 2015 to 2024.
- Neighboring counties: the 5 counties that share a border with Brevard County, from the Census Bureau's county adjacency file.
- PFAS: EPA tests of 10 town water systems in Brevard County under the Fifth Unregulated Contaminant Monitoring Rule, 2023 to 2025.
- Radon: Brevard County is zone 3 on the EPA Map of Radon Zones.
- State programs and links: Department of Health, checked November 1, 2026.