Well water filtration in Central Florida is not a one-product problem. Floridan Aquifer water typically arrives at the wellhead with some combination of hardness, iron, hydrogen sulfide, occasional sediment, and (in shallower surficial wells) low pH. A properly designed system stages oxidation, filtration, softening, and reverse osmosis in the right order for your actual water. This guide walks the contaminants, the treatment options, and the sizing logic Quality Filters And Pumps uses on every install.
Why Sequence Matters
Every stage of treatment makes the next stage's job easier or harder. A softener placed ahead of an iron filter fouls the softener resin. Reverse osmosis placed ahead of a softener shortens membrane life on hard water. The order on a typical Central Florida well runs sediment prefilter, then oxidation and catalytic media for iron and sulfur, then softening, then point-of-use reverse osmosis for drinking water. The exact order for your house depends on what your water actually contains, which is why every install starts with an on-site test.
The Six Contaminants Driving Most Central Florida Well Treatment
- Hardness (calcium and magnesium): visible scale on aerators, faucets, glassware, and inside water heaters.
- Hydrogen sulfide: rotten-egg smell, strongest on the hot side, corrodes copper.
- Iron (dissolved ferrous and oxidized ferric): orange-red stains on fixtures, laundry, and tile.
- Sediment: sand and fine particulate from the well bore or aging casing.
- Low pH (some surficial wells): blue-green staining on copper fixtures, pipe pinhole leaks over time.
- Bacteria (intermittent): coliform and E. coli are testable, and shock-treatable.
Less common but still routine: tannins from organic decay in swampy recharge zones, manganese in some deep zones, and very occasionally elevated nitrates near agricultural land. PFAS testing for private wells in Florida is still emerging; we recommend it for wells near firefighting training areas, airports, or industrial sites.
Test First, Then Size
Every install we do starts with a free on-site test. The minimum panel: iron, hardness, hydrogen sulfide, pH, TDS, and a temperature reading. We send a lab sample for anything specialized: bacteria, arsenic, radium, PFAS. Florida well testing guidance covers what the EPA and state recommend; see our companion Florida well water testing guide for the full picture.
Recommended Method by Water Profile
| Your water profile | Recommended treatment sequence |
|---|---|
| Hard water only, no iron or sulfur | Sediment prefilter, then water softener, optional under-sink RO for drinking |
| Hard water plus mild iron (under 1 ppm) | Sediment prefilter, then softener sized for combined load, optional RO |
| Iron 1-3 ppm with light sulfide | Air-injection oxidation with catalytic media, then softener, then RO |
| Strong rotten-egg smell, iron over 3 ppm | Air-injection oxidation, catalytic carbon, larger softener, RO |
| Low pH (under 7.0) with copper staining | Calcite neutralizer first, then iron/sulfur stage if needed, then softener |
| Bacterial hits after rain or flooding | Shock chlorination, then continuous UV disinfection upstream of softener |
How Each Treatment Stage Works
Sediment Prefiltration
A sediment prefilter is a pleated or spun cartridge in a clear housing that catches sand, scale fragments, and fine particulate before water reaches the more expensive equipment downstream. It is the cheapest part of the system and the one that fails most visibly: when it clogs, pressure drops at every fixture. Oversizing the housing lengthens the interval between cartridge changes.
Air-Injection Iron and Sulfur Removal
Air-injection systems are the workhorse for combined iron and hydrogen sulfide removal on Florida wells. A small air pocket sits at the top of a treatment tank. As water passes up through the pocket, dissolved iron oxidizes to its insoluble ferric form and hydrogen sulfide oxidizes to elemental sulfur. The oxidized particles are trapped in catalytic carbon or birm media below. The system backwashes itself on a timed cycle and refreshes the air pocket from an internal vent. No chemicals, no compressor, no scheduled chemistry to mix.
Why Softener Sizing Matters
A properly sized softener uses just enough salt to fully regenerate the resin bed without over-regenerating. The calculation: hardness in grains per gallon, multiplied by daily gallons used by the household, multiplied by a safety factor, divided by the resin bed's rated capacity. For a four-person household on Central Florida well water testing 20 grains per gallon, the typical sizing lands in the 48,000 to 64,000 grain range. Bigger is not better, an oversized resin bed wastes salt and water.
A household with sodium concerns can run the softener on potassium chloride in place of sodium chloride.
When Reverse Osmosis Is the Right Call
Point-of-use reverse osmosis is the only consumer technology that consistently removes dissolved solids, lead, arsenic, fluoride, nitrates, and PFAS to bottled-water quality. We install RO at the kitchen sink for any home that wants better drinking water than what comes out of the softener, which is every home we install on a well. For ice makers and refrigerator dispensers, we tee the RO line over to the fridge when the run is short enough to maintain pressure, or add a permeate pump for longer runs.
Chemical Oxidation as an Alternative to Air Injection
Where iron is very high, or where a well takes persistent bacterial hits, a metered chemical feed of chlorine or hydrogen peroxide upstream of the filtration tank oxidizes faster and more completely than air injection alone. The tradeoff is operational complexity: the feed needs scheduled chemistry refills, and the chemistry needs neutralizing with downstream activated carbon before the water reaches the house. It is the right answer when the water profile calls for it, not a default.
Calcite Neutralizers for Low pH Wells
Acidic water is corrosive to copper, leaves blue-green staining on fixtures, and can drive pinhole leaks in copper supply lines. A calcite neutralizer is a tank of crushed marble that dissolves slowly into the water, raising pH toward neutral. The media is consumed gradually and needs topping off. Where pH is low the neutralizer sits at the front of the treatment train, ahead of iron and sulfur removal, because raising pH first improves iron oxidation efficiency.
Installation Considerations
These are the points that most often surprise homeowners:
- Drain access. Filtration tanks backwash, so each tank needs a drain line. Plan drain size and routing before install day.
- Bypass valves. Every stage should have a bypass for service, so one stage can be worked on without taking the whole house offline.
- Power and salt access. A softener needs an outlet within reach of the control valve, and physical access for salt delivery.
- Outdoor placement. Many Central Florida homes put filtration in the garage or a small outdoor enclosure. Direct sun and high temperatures shorten equipment life, so shade or relocation is worth planning for.
Maintenance, Documented
Every install we do leaves a written maintenance schedule: when to refill salt, when to replace sediment cartridges, when to swap media, when to test water again. The leading cause of system underperformance is missed maintenance, not bad equipment. We offer maintenance contracts for owners who would rather not track it themselves; see our maintenance plans.
Call a Professional If
- You have not had your well water tested in the last 12 months.
- Water has visibly changed color, taste, or smell.
- Fixtures and laundry are staining despite an existing softener (your iron or sulfur load is exceeding the softener's capacity).
- You have an existing filtration system that is more than 12 years old.
- You are buying a property with a private well of unknown service history.
- Anyone in the household has elevated blood lead, kidney issues, or pregnancy considerations.
Related guides: water softener installation, RO system repair, iron and sulfur treatment, PFAS in private wells, PFAS treatment: carbon vs RO, sandy or gritty well water, constant pressure well systems, how hard water damages appliances, hurricane well decontamination, and irrigation pump repair. Background reading: see iron and sulfur in well water, Florida well water testing, and well water vs city water. Local filtration service pages: Ocala, Gainesville, Leesburg, Mount Dora, and Eustis. See the full water filtration service page and the filtration repair page.
PFAS in Central Florida Well Water: Carbon vs RO
PFAS (per- and polyfluoroalkyl substances) show up in private wells near firefighting training sites, airports, and certain industrial corridors across Central Florida. When a test comes back positive, the treatment choice comes down to two certified approaches: whole-house granular activated carbon (GAC) or point-of-use reverse osmosis.
GAC certified to NSF/ANSI 53 is effective against long-chain PFAS compounds (PFOA, PFOS) at every tap in the house. The limitation is media life: saturated carbon stops adsorbing and can release PFAS back into the water if not replaced on a volume-based schedule. Whole-house carbon also has reduced effectiveness on shorter-chain PFAS compounds (PFBS, PFBA) that are increasingly common as legacy compounds are phased down.
Point-of-use RO certified to NSF/ANSI 58 removes a broader range of PFAS to below detection limits at the drinking and cooking tap. It does not treat every outlet in the house, which matters for households with young children who drink water from multiple taps or bathe in PFAS-affected water.
For most Central Florida households we install both: a whole-house GAC stage for all-tap coverage on long-chain compounds and an under-sink RO for drinking and cooking water. See the full comparison in our PFAS treatment guide for private wells and the earlier primer on PFAS in Central Florida private wells. Florida DEP well testing guidance (floridadep.gov/water/source-drinking-water/content/private-drinking-water-wells) covers when state labs are recommended over commercial panel kits.
Frequently Asked Questions
What's the single biggest well water problem in Central Florida?
Will a softener fix iron and sulfur?
Do I need to test my well water before buying equipment?
How often do whole-house filter media need replacing?
Does reverse osmosis remove everything?
Ready to fix the water at your Central Florida home?
Free on-site water test. System sized to your water. Written quote before any work.