Nobody is testing your well. That is the system, not an oversight.
A public water utility is sampled constantly and has to publish the results. A private well has none of that. Florida does not require you to test, does not test it for you, and does not keep the result.
- Independent: we sell no equipment
- Marion County only
- Every claim cited to its source
- Costs you nothing
Most Marion County homes are on a private or limited-use well rather than a public supply. The county health department describes more than a third of residents on public water systems, with the majority on limited-use systems and private wells. If you moved here from a state or a city where testing was somebody else job, this is the most useful thing to absorb about owning a well in Florida.
What to test for, and why each one
The mistake is testing for what you can see. Staining and smell have no health consequence worth worrying about, and the two things that genuinely matter are invisible, tasteless and odourless.
- Bacteria, total coliform and E. coliThe one that matters for health. No taste, no smell, no colour. It also says whether the well itself is sound. At least annually, and after any work on the well or any flooding.
- NitrateThe other health test. Matters most for infants and during pregnancy, and is associated with septic systems, fertiliser and agriculture, all of which this county has. Annually, and before a baby is in the house.
- Iron, hardness, pH and hydrogen sulfideNuisance chemistry rather than a health question, but these are the numbers that choose treatment equipment. Once, before buying anything, and again if the water changes.
- Whatever is local to the parcelProximity to agriculture, a former grove, fuel storage or an old dump changes the sensible list. Worth a conversation with the health department rather than a checkbox.
Four moments to test regardless of schedule
- Anything changed
Taste, smell, colour or clarity you cannot explain, especially if it appeared suddenly.
- Anybody has been inside the well
A pump replacement means the well was opened, and the correct practice afterwards is disinfection and a follow-up bacteria test.
- After flooding
Surface water reaching a wellhead is the classic route for contamination, and this is Florida.
- Before a baby, or before somebody vulnerable moves in
Specifically for nitrate, and specifically before rather than after.
Where a Marion County sample goes
Samples for the health-relevant tests go to a certified laboratory, and how the sample is collected matters as much as the lab. A bacteria sample taken into an unsterile jar, or left warm in a car all afternoon, produces a result that tells you nothing.
Start with the county health department on 352-622-7744. They supervise private, multi-family and limited-use water systems, they collect and evaluate samples as part of that work, and they can say which certified laboratories serve this county and how to collect a sample worth the fee.
The questions people actually ask
What are the requirements for private well water testing in Florida?
For an existing private well serving a single household, there is no ongoing state testing requirement. Florida does not mandate periodic testing, does not perform it, and does not hold the results. Testing can be required at particular moments, such as when a new well is constructed or in connection with a property transaction, but that is a requirement of the event rather than a standing obligation on the owner.
How can I get my water quality tested in Florida?
Through a certified laboratory, with the county health department as the place to start. They supervise private and limited-use water systems and collect and evaluate samples as part of that role. Ask for the collection instructions at the same time, because for bacteria testing how the sample is taken and how quickly it reaches the lab affects the result as much as anything else.
How much does a well water test cost?
It depends entirely on the panel. A single bacteria test is the cheapest thing on the list and the one most worth having. A broad chemical panel costs considerably more. Rather than shopping on price, decide what you are asking: bacteria and nitrate answer whether the water is a health risk, while iron, hardness, pH and sulfide answer what equipment you need. It is common to pay for the wrong one.
My water looks and tastes fine. Do I still need to test?
Yes, and this is the whole argument for testing. Coliform bacteria and nitrate have no taste, no smell and no colour at the concentrations that matter, so water that looks perfect tells you nothing about either. Meanwhile the water that looks alarming, orange and smelling of sulfur, is usually the harmless one.
Does the county test my well at no charge?
Do not assume so. Programmes and fees change, and no-cost testing is often limited to particular circumstances such as a suspected contamination incident rather than routine peace of mind. The health department Environmental Public Health line on 352-622-7744 is the place to ask what is currently available in Marion County.
What this site is, in full
About this guide
Ocala Well Water publishes an independent guide to private well water for homeowners in Marion County, Florida. It does not drill, repair, test or install anything, and it sells no equipment.
Corrections
Permit rules, offices and fees move, and a page about them is worth less than nothing once it is stale. Write to corrections@ocalawellwater.com with the page, the disputed fact and a source, and it will be corrected or removed, and the correction dated.