Well Water Nerd

Well water testing in Florida

Nobody tests a private well unless the owner does. In Florida, the public record says to start with PFOS, PFOA, radium (226 + 228), then bacteria and nitrate every year. Below: what to order, where, what it costs, and the county-by-county results that set the order.

What to test for first

  1. 1
    PFOS
    71% of 79 local samples were above the limit.
  2. 2
    PFOA
    41% of 79 local samples were above the limit.
  3. 3
    Radium (226 + 228)
    11% of 951 local samples were above the limit.
  4. 4
    Nitrate
    6% of 26,064 local samples were above the limit.
  5. 5
    Arsenic
    5% of 14,852 local samples were above the limit.

Test your Florida well for PFOS, PFOA and radium (226 + 228)

Certified lab analysis of your own tap water, bottles and prepaid return shipping included. The Essential well panel covers arsenic, uranium, nitrate, lead, copper, manganese, iron, sodium and bacteria; radon and PFAS are add-ons.

Order the Tap Score well water test kit, from $209Already tested? Upload the report

Just want bacteria checked first? Tap Score coliform and E. coli test, $99. Coliform and E. coli are the tests every well needs every year.

Want a quick look before paying for a lab? Home well water test strips on Amazon check hardness, iron, pH and nitrate in minutes. They are a screen, not a result: arsenic, bacteria, uranium and PFAS need a certified lab.

Affiliate links: the merchant pays us a commission and the price is the same for you. It does not change what the data above says. As an Amazon Associate we earn from qualifying purchases.

Where to get it tested

Three routes, and all of them work. A mail-in kit from a certified lab is the simplest: the lab ships bottles, you fill them at the kitchen tap, and results come back by email. The full panel above is $209.

A local certified lab is the second route. NELAP Certified Laboratory Search from Florida DEP lists every lab certified for drinking water in Florida. Call ahead: some take walk-in samples, some ship bottles.

Florida Department of Health county health departments provide sampling instructions and test private well water for bacteria and nitrate, usually $20-30 per sample. Details from the state

Free or low-cost testing: Through the state Well Surveillance Program, county health departments sample private wells near known or suspected contamination sites at no cost to the property owner, with priority set by the state rather than by request. How to get it

For questions about your well, Private Well Water Testing at Florida Department of Health is the official source.

Already have results? Get the lab report read line by line, $29.

Testing by county

The contaminant most often over its limit in each county's public record, highest share first. Open a county for the full test list and its towns.

CountyTest first forOver the limit
Lafayette CountyNitrate49%
Sarasota CountyRadium (226 + 228)42%
Bradford CountyNitrate36%
Suwannee CountyNitrate34%
Polk CountyNitrate22%
Gulf CountyFluoride18%
Union CountyLead14%
Dixie CountyArsenic12%
Broward CountyArsenic11%
Alachua CountyNitrate11%
Collier CountyArsenic10%
Jackson CountyNitrate10%
Gilchrist CountyNitrate10%
Pinellas CountyArsenic9%
Lake CountyNitrate9%
Hamilton CountyArsenic9%
Leon CountyNitrate8%
Miami-Dade CountyArsenic8%
Hendry CountyUranium7%
Hernando CountyArsenic6%
Hillsborough CountyArsenic6%
Monroe CountyNitrate6%
Santa Rosa CountyLead5%
Okaloosa CountyLead5%
Palm Beach CountyArsenic5%
Hardee CountyLead4%
Orange CountyArsenic4%
Lee CountyArsenic3%
Highlands CountyLead3%
Bay CountyArsenic3%
Escambia CountyNitrate3%
Pasco CountyNitrate2%
Levy CountyArsenic2%
Walton CountyArsenic2%
Wakulla CountyNitrate2%
Gadsden CountyFluoride2%
Clay CountyArsenic2%
DeSoto CountyLead2%
Brevard CountyArsenic2%
Martin CountyLead2%
Seminole CountyArsenic1%
Columbia CountyArsenic1%
Marion CountyNitrate1%
Volusia CountyArsenic1%
Flagler CountyLead1%
Madison CountyNitrate<1%
Nassau CountyLead<1%
Citrus CountyNitrate<1%
Taylor CountyLead<1%
St. Johns CountyArsenic<1%
Duval CountyLead<1%
Charlotte CountyFluoride<1%
Manatee CountyFluoride<1%
Baker CountyNitrate0%
Calhoun CountyCopper0%
Indian River CountyCopper0%
Jefferson CountyNitrate0%
Okeechobee CountyNitrate0%
Osceola CountyNitrate0%
Putnam CountyNitrate0%
St. Lucie CountyRadium (226 + 228)0%
Sumter CountyFluoride0%
Washington CountyCopper0%

Closer than the county: see the sampled wells near your address.

Free, no obligation

Get on the list for a free in-home water test in Florida

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Common questions

What should I test my well for in Florida?

Start with PFOS, PFOA, radium (226 + 228). 71% of 79 local samples were above the limit. Add total coliform bacteria and nitrate every year for any private well.

Where can I get my well water tested in Florida?

Use a lab certified for drinking water. Florida DEP keeps the list of certified labs. A mail-in kit from a certified lab works anywhere in the state.

How much does well water testing cost in Florida?

A full mail-in panel from a certified lab costs $209 (Tap Score well water test kit). A bacteria-only test costs $99 (Tap Score coliform and E. coli test). Florida Department of Health county health departments provide sampling instructions and test private well water for bacteria and nitrate, usually $20-30 per sample.

Is there free well water testing in Florida?

Through the state Well Surveillance Program, county health departments sample private wells near known or suspected contamination sites at no cost to the property owner, with priority set by the state rather than by request.

How often should a private well be tested?

Bacteria and nitrate every year. A full panel once, then again after flooding, a change in taste, smell or color, work on the well, a new baby in the house, or a nearby result above the limit. Contaminants that come from the rock, like arsenic, radon and uranium, change slowly, so one good test and a check every few years is enough.