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Health problems are rare in tested Volusia County wells.

All 5 health checks came back rare here.

From 128 wells tested in Volusia County since 2002; your own well needs its own test. How to read this

Tested wells over the limit VolusiaFlorida

Lead2%3 of 128 Arsenic2%2 of 124 Nitrate0%0 of 114 Fluoride0%0 of 44 Manganese0%0 of 128

GermsTest every year, whatever the chart says

Coliform bacteria49%19 of 39 E. coli0%0 of 24

StainsNot a health risk

Iron stains49%63 of 128

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)

Show bacteria and iron

Who drinks from a well here

1 in 6 people 88,379 people

Nobody else tests these wells. Only you do.

People on wells: EPA researchers' 2020 estimate

Radon risk (a gas from rock)

LowMiddleHigh

Less likely, but the EPA still says test your air.

Radon zones: EPA map

Here's how Volusia County compares with Florida and the counties around it.

Each result puts Volusia County next to the 7 counties that border it, on the chart's 0 to 50% scale.

All 5 health checks are rare in Volusia County.

Lead3 of 128 wells over

3 of 128 wells tested here from 2002 to 2025 were over the EPA action level of 15 µg/L, against about 1 in 9 across Florida. That's a bigger share than in 37 of the 63 other Florida counties with 10 or more tested wells.

Volusia and its neighbors

Flagler3%

Volusia2%

Arsenic2 of 124 wells over

2 of 124 wells tested here from 2002 to 2025 were over the EPA limit of 10 µg/L, against about 1 in 9 across Florida. That's a smaller share than in 38 of the 63 other Florida counties with 10 or more tested wells.

Volusia and its neighbors

Flagler3%

Volusia2%

Nitrate0 of 114 wells over

None of the 114 wells tested here from 2002 to 2025 were over the EPA limit of 10 mg/L, against about 1 in 32 across Florida. At least half the results were too low for the lab to measure, and the top 1 in 10 were 0.22 mg/L or more. Volusia County had none, while 25 of the 59 other Florida counties with 10 or more tested wells had at least one.

Volusia and its neighbors

Flagler0%

Volusia0%

Fluoride0 of 44 wells over

None of the 44 wells tested here from 2002 to 2025 were over the EPA limit of 4 mg/L, against under 1 in 50 across Florida. Half the results were under 0.11 mg/L, and the top 1 in 10 were 0.33 mg/L or more. Volusia County had none, while 16 of the 63 other Florida counties with 10 or more tested wells had at least one.

Volusia and its neighbors

Flagler0%

Volusia0%

Manganese0 of 128 wells over

None of the 128 wells tested here from 2002 to 2025 were over the EPA health advisory of 0.3 mg/L, against under 1 in 100 across Florida. At least half the results were too low for the lab to measure, and the top 1 in 10 were 0.033 mg/L or more. Volusia County had none, while 15 of the 63 other Florida counties with 10 or more tested wells had at least one.

Volusia and its neighbors

Flagler0%

Volusia0%

Manganese guide

Too few Volusia County wells were tested for these 2.

Uranium6 wells tested

Only 6 wells here were tested from 2002 to 2015, too few to say how common it is. Across Florida it's under 1 in 100.

Radon in water6 wells tested

Only 6 wells here were tested from 2002 to 2015, too few to say how common it is. Across Florida it's about 1 in 45.

Coliform bacteria turned up in 19 of 39 tested Volusia County wells, so test for it every year.

Coliform bacteria19 of 39 wells had it

About 5 in 10 wells tested here from 2015 to 2025 had coliform bacteria, against about 5 in 10 across Florida.

Volusia and its neighbors

Volusia49%

Flagler44%

Most of Florida's bacteria results come from shallow monitoring-network wells, so they aren't a guide to household wells.

E. coli0 of 24 wells had it

None of the 24 wells tested here from 2015 to 2025 had E. coli, against about 1 in 12 across Florida.

Volusia and its neighbors

Flagler0%

Volusia0%

Too few tested to show: Putnam.

E. coli means human or animal waste is getting in, so if a test of your Volusia County well finds it, boil drinking water until the well is fixed.

Iron reached staining levels in 63 of 128 tested wells, and it isn't a health risk.

Iron stains63 of 128 wells had it

About 5 in 10 wells tested here from 2002 to 2025 had enough iron to stain (0.3 mg/L), against about 4 in 10 across Florida.

Volusia and its neighbors

Flagler56%

Volusia49%

About 9 in 10 of the 128 wells tested in Volusia County have a test from 2020 or later.

4 wells had a test in the 2000s, 98 in the 2010s and 110 since 2020.

With 110 wells tested since 2020, age matters less here than who did the testing and why.

Most Volusia 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 Volusia 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 Volusia County requires testing of new or repaired wells under a local rule.

Here's what we know about radon and PFAS in Volusia County.

Volusia 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 17 town water systems in Volusia County test for PFAS. 5 of them had at least one test above 4 ng/L, the new EPA limit for PFOA and PFOS. The highest single result was 22 ng/L of PFOS. No well in Volusia 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

Next door to Volusia County

Marion Brevard Lake Orange Seminole Putnam

Elsewhere in Florida

Duval Hillsborough Clay

Questions people ask about well water in Volusia County

Is well water in Volusia County safe to drink?

Most tested wells in Volusia County came in under the limits. Of 5 health checks with enough tests, lead came closest, at 3 of 128 wells over. Every well is different, so test yours for bacteria, nitrate and arsenic.

Can I get my well tested for free in Volusia 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 Volusia County.

How does Volusia County compare with the counties around it?

For lead, the share of tested wells over the limit: 1 of the 7 neighboring counties with data had a higher share than Volusia County, at 2%. Flagler had the most, at 3%. Groundwater doesn't stop at county lines, so Flagler's 3% is worth knowing about if you live near it.

How often should I test my well in Volusia County?

In Volusia County, 19 of 39 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.

By the Tested Water teamData from the USGS, EPA and Department of HealthUpdated November 8, 2026

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Where the Volusia County numbers come from

People on wells: 88,379 in Volusia County, from EPA estimates built on the 2020 Census (Murray et al.).
Lab tests: 2,471 well water samples from 128 wells in the Water Quality Portal, run by the USGS and EPA, 2002 to 2025.
Neighboring counties: the 7 counties that share a border with Volusia County, from the Census Bureau's county adjacency file.
PFAS: EPA tests of 17 town water systems in Volusia County under the Fifth Unregulated Contaminant Monitoring Rule, 2023 to 2025.
Radon: Volusia County is zone 3 on the EPA Map of Radon Zones.
State programs and links: Department of Health, checked November 1, 2026.

Download this county's data (CSV)How we read these numbers Report an error

Test for bacteria and nitrate every yearSee lab tests