Water Filters Miami
Your Biscayne Aquifer Water Is Already Over the New PFAS Limit.
Miami-Dade Water and Sewer Department (WASD) pulls from the Biscayne Aquifer and lime-softens it — but PFOS and PFOA in the distribution system have been reported above the EPA's 4 ppt legal limit set in 2024, alongside chloramine disinfection byproducts and limestone hardness that still coats your water heater. WASD has until 2029 to comply. Your kitchen tap doesn't have to wait. We match every Miami home to the right water softener system, water purification RO system, or water conditioner.
Contaminant Snapshot
served by WASD
hardness range
4 ppt EPA legal limit
on every system
Florida Banned Water Fluoridation — Miami-Dade Stopped in 2025
Governor DeSantis signed SB 700 (the "Florida Farm Bill") on May 15, 2025, barring Florida water systems from adding fluoride and certain other additives. It took effect July 1, 2025. Miami-Dade had already moved first — county commissioners voted to end fluoridation in May 2025, overriding the mayor's veto. Naturally occurring fluoride in Florida groundwater remains, averaging about 0.14 mg/L statewide.
What this means for your filtration: if you were previously running a fluoride-reduction filter on Miami water, your treatment priorities have shifted. Hardness, PFAS, and chloramine byproducts are now the contaminants worth spending money on. Call 785-661-2241 and we'll rebuild your system spec around what's actually in your water today.
What's Actually in Miami Tap Water
Miami-Dade WASD lime-softens Biscayne Aquifer water at the plant, but PFAS, disinfection byproducts, and residual hardness all still reach the tap.
| Contaminant | Severity | Source |
|---|---|---|
| PFOS / PFOA ("forever chemicals") | CRITICAL | AFFF firefighting foam — Miami International Airport, Homestead Air Reserve Base, industrial sites over the Biscayne Aquifer. |
| Hard Water Scale (10–17 GPG) | HIGH | Limestone and dolomite in the Biscayne Aquifer; lime softening reduces but does not eliminate it. |
| HAA5 & TTHMs | HIGH | Chloramine disinfection reacting with organic matter — historically elevated at the John E. Preston plant. |
| Chloramines | MODERATE | Chlorine + ammonia secondary disinfectant used system-wide by WASD. |
| Lead (pre-1986 homes) | MODERATE | Lead solder and service lines in older Miami housing stock, not the source water. |
| Sodium & Chloride | MODERATE | Saltwater intrusion pressure on coastal Biscayne Aquifer wellfields. |
How Hard Is Your Miami Neighborhood's Water?
Miami-Dade doesn't have one hardness number — it has three plants and a handful of satellite systems, each with a different source blend and a different degree of lime softening. The Alexander Orr Jr. plant blends Biscayne with more mineral-rich Floridan Aquifer water. Hialeah and John E. Preston draw solely from the Biscayne Aquifer; Preston runs enhanced softening because its raw water carries more organic matter. South Dade runs its own smaller plants plus a Hialeah RO facility.
| Sub-Area | Neighborhoods | Typical Hardness |
|---|---|---|
| Hialeah–Preston service area | Hialeah, Miami Springs, Miami Lakes, Opa-locka, Doral | 13–17 GPG |
| Alexander Orr service area (south of SW 8th St) | Coral Gables, Coconut Grove, South Miami, Kendall | 12–16 GPG |
| Central & Downtown | Downtown, Brickell, Little Havana, Wynwood, Edgewater | 12–16 GPG |
| South Dade Water Supply System | Cutler Bay, Palmetto Bay, Homestead, Florida City, Redland | 10–20 GPG |
| Coastal / barrier island | Miami Beach, Key Biscayne, Surfside, Bal Harbour | 11–15 GPG |
Legend: 0–3.5 GPG soft · 3.5–7 GPG moderate · 7–10.5 GPG hard · 10.5+ GPG very hard. Every Miami-Dade service area sits in the "very hard" band or at its edge. National average: ~10 GPG.
Six Reasons Miami Tap Water Needs Treatment
PFOS and PFOA Above the Federal Limit Reported
Limestone Hardness That Survives Lime Softening
HAA5 and Trihalomethanes from Chloramination
Chloramine Taste and Odor
Lead in Pre-1986 Miami Plumbing
Saltwater Intrusion and Sodium
Miami Water Quality by Neighborhood & Recommended Solution
| Neighborhood / Area | Source | Hardness | Key Contaminants | Severity | Recommended Bundle |
|---|---|---|---|---|---|
| Hialeah / Miami Springs | Biscayne (Hialeah–Preston) | 13–17 GPG | Hardness, HAA5, PFAS, chloramines | CRITICAL | 64k Softener + PFAS Filter |
| Doral / Medley | Biscayne (NW Wellfield) | 13–17 GPG | Hardness, PFAS (airport corridor), chloramines | CRITICAL | 64k Softener + RO System |
| Downtown / Brickell / Edgewater | Biscayne (Preston) | 12–16 GPG | Hardness, HAA5, TTHMs, lead (older towers) | HIGH | 48k Softener + RO System |
| Little Havana / Allapattah | Biscayne (Preston) | 12–16 GPG | Hardness, chloramines, lead (pre-1986) | HIGH | 48k Softener + RO System |
| Coral Gables / Coconut Grove | Biscayne + Floridan blend (Orr) | 12–16 GPG | Hardness, chloramines, lead (historic homes) | HIGH | 48k Softener + Catalytic Carbon |
| Kendall / South Miami | Biscayne + Floridan blend (Orr) | 12–16 GPG | Hardness, chloramines, HAA5 | HIGH | 48k Softener + RO System |
| Cutler Bay / Palmetto Bay | South Dade system | 10–16 GPG | Hardness, chloramines, PFAS | HIGH | 48k Softener + PFAS Filter |
| Homestead / Florida City / Redland | South Dade + private wells | 10–20+ GPG | Hardness, iron, sulfur (well homes), nitrates | SEVERE (wells) | 64k Softener + Air Injection Iron Filter |
| Miami Beach / Surfside / Bal Harbour | Biscayne, coastal distribution | 11–15 GPG | Hardness, sodium/chloride, chloramines | HIGH | 48k Softener + RO System |
| Key Biscayne | Biscayne, coastal distribution | 11–15 GPG | Hardness, sodium/chloride, HAA5 | HIGH | 40k Softener + RO System |
Water Softener Systems for Miami Homes
WASD's lime softening gets the worst of the calcium out at the plant. A properly sized water softener system at your house finishes the job — no scale in the heater, no film on the shower glass, no chalk ring in the kettle — and typically pays for itself in appliance life within two to three years.
View All Water Softeners →
48k Water Softener System — Fleck 5600SXT, 10% Crosslink Resin
Sized for the typical Miami household of 2–4 people on 12–16 GPG WASD water. Demand-metered regeneration means it only cycles when you've actually used the capacity — which matters under year-round water conservation rules.
64k Water Softener System — Fleck 5600SXT, 10% Crosslink Resin
Built for the harder end of the Miami-Dade range and for larger households. The right call for Hialeah, Miami Springs, Doral, and any South Dade home at the top of the hardness band or running on a private well.
40k Water Softener System — Fleck 5600SXT
For Miami Beach condos, Key Biscayne units, and 1–3 person households where footprint matters more than headroom. Same control valve, smaller resin bed, smaller closet.
Salt-Based Softener vs. Salt-Free Conditioner — Which Fits a Miami Home?
Salt-Based Water Softener System
- Physically removes calcium and magnesium by ion exchange
- Eliminates scale completely — not just prevents adhesion
- The proven answer at 12+ GPG, which covers most of Miami-Dade
- Demand-metered valves are salt-efficient and water-conserving
- Best return on investment: 2–3 years in appliance protection
- Adds sodium to the water — worth weighing on a coastal aquifer already under salinity pressure
- Requires periodic salt purchase and a brine tank
Salt-Free Water Conditioner for Hard Water
- No salt, no brine discharge, no sodium added
- Conditions hardness minerals so they don't bond to pipes and fixtures
- Good fit for sodium-restricted households and condo installs
- Zero wastewater from regeneration
- Does not remove calcium and magnesium from the water
- Scale prevention, not scale elimination — a less dramatic result on 16 GPG water
Water Purification RO Systems for Miami Drinking Water
A softener protects your plumbing. It does nothing about PFOS, PFOA, lead, or chloramine byproducts. A water purification RO system under the kitchen sink handles the contaminants named on this page — the ones WASD is under a 2029 federal deadline to fix.
View All RO Systems →
RO Zoi Alpha Pure — 5-Stage Water Purification RO System
Five-stage reverse osmosis rated for PFOS and PFOA, lead, chloramine byproducts, HAA5, TTHMs, sodium, and over a thousand other contaminants. Fits under a standard Miami kitchen cabinet.
Filmtec 50 GPD RO Membrane — NSF Certified Replacement
The membrane most Miami under-sink systems should be running. Industry-leading rejection rates against PFAS, lead, sodium, and dissolved minerals, with a 2–4 year service life. Universal fit.
PFAS Whole House Water Treatment System
For Miami-Dade households near the airport corridor, Homestead, or Doral — the areas where AFFF contamination of the Biscayne Aquifer is documented. Whole-house PFAS reduction at every fixture, not just the kitchen tap.
Water Conditioners For Hard Water — Built for Miami City Water
Miami's problem isn't only hardness. It's hardness plus chloramine byproducts plus metals in older plumbing. Water conditioners for hard water combine softening resin with additional filtration media so one tank handles more than one problem — the right architecture for treated municipal water.
View All Conditioners & Whole House Filters →AFW City-Pro 48k — Water Conditioner for Hard Water + KDF Multi-Media
NSF-certified Purolite resin for hardness, plus KDF multi-media for heavy metals, bacteria, and taste-and-odor. Our most complete single-tank answer to Miami's combination of limestone hardness and chloramine chemistry.
Catalytic Carbon Whole House System
Standard activated carbon strips chlorine well and chloramines poorly. Catalytic carbon is processed specifically to break down the chloramine WASD uses system-wide, cutting HAA5 and TTHM load at the point of entry.
Salt-Free Water Conditioner
No brine, no discharge, no added sodium — worth considering on a coastal aquifer already under salinity pressure, in a condo without a drain line, or in a sodium-restricted household.
Why Miami Homeowners Choose AFWFilters
Since 1998, we've matched thousands of homeowners to the right system for their specific water — not a generic recommendation.
We Know That "Miami Water" Means Three Different Plants
Hialeah, John E. Preston, and Alexander Orr Jr. don't produce identical water. Preston has historically run higher on haloacetic acids; Orr blends in Floridan Aquifer water; South Dade runs on its own smaller systems. We ask which plant serves you before we recommend a grain capacity.
We Track the PFAS Compliance Clock
EPA set a 4 ppt limit for PFOS and PFOA in April 2024. Miami-Dade has until 2029 to meet it. We can tell you exactly which of our systems are rated for PFAS reduction and which are not — including the honest answer that a water softener system is not one of them.
Real Water Treatment Experts on the Phone
Call 785-661-2241, Monday to Friday, 8am–4pm CT. You reach someone who can read a WASD Consumer Confidence Report and build a spec from it. Not a chatbot, not a script, not a lead form.
120-Day Money-Back Guarantee
Every water softener system, water conditioner for hard water, and water purification RO system we ship to Miami-Dade carries a 120-day guarantee. We've been doing this since 1998 and we'd rather you return a system than keep the wrong one.
Verified Reviews from Miami Homeowners
The system we purchased from AFW was the lowest price and still the best softener we could find. The shipping was quick and arrived in great condition. Installation was simple and complete in only a couple of hours. Highly recommend AFW systems.
I have purchased two water softeners from AFW. Mariah in support was extremely helpful in choosing the right products. Once I purchased, she was available to answer all of my installation and programming questions. She provided access to documentation and videos to make the job easier. I would definitely recommend AFW.
Very well packaged order. The detailed instructions are very thorough and helpful. Everything works as it should. One item was in back order and it was communicated well. The bracket they use for big blue is well made and strict compared to ones I have had in the past.
Miami Water Filter FAQ
How hard is Miami tap water — and does it vary by neighborhood?
Does Miami tap water contain PFAS?
What size water softener system do I need for a Miami home?
Why does my Miami water taste and smell chemical?
Are water softeners restricted or banned anywhere in Miami-Dade?
Florida removed fluoride from tap water. Does that change what filter I need?
If I have a water softener system, do I still need an RO system?
Does AFWFilters ship water softeners and filters to Miami?
Tell Us Your Miami Neighborhood. We'll Build the Right System.
Whether you're in Hialeah dealing with the hard end of the WASD range, in Doral watching the PFAS compliance clock, in Coral Gables with pre-1986 plumbing, or in Homestead on a private well — we'll spec the water softener system, water conditioner for hard water, or water purification RO system that fits your actual water. Not a county-wide average.
Nationwide Coverage
Helping Customers Across the Country
Find the right water filtration system for your city. AFW Filters proudly serves homes and businesses in these areas.