Phone: 305-404-8790
info@bestwaterheater.com
Phone: 305-404-8790
info@bestwaterheater.com
Bottled water-quality water throughout your entire Marathon home. Advanced whole-house purification down to ≤0.01 microns—no bulky RO tanks or pumps required.
System Specifications
A hollow-fiber ultrafiltration membrane does the work a reverse osmosis membrane normally needs a storage tank to do—so every tap in your Marathon home runs at full pressure, all day, with no brine tank taking up space.
Ultrafiltration pore size
High whole-house flow rate for Marathon
Roughly a year between changes for Marathon households
Physical barrier, not chemical—great for Marathon water treatment
Visibly clearer water in your Marathon glass
Operates perfectly up to
Limited Time Offer for Marathon
$2,995
Installed
Regularly
Cartridge housings, manifold, UF membrane vessel & all parts—built for Keys air.
Mounted, plumbed and pressure-tested by experienced pros serving Marathon and the Florida Keys.
We test your Marathon water and verify flow and pressure before we leave.
Fully tankless—no storage tank, no waiting for a refill.
We stand behind our work and your satisfaction here in Marathon.
Treated at the main line, so your whole Marathon home benefits at once.
Why This System for Marathon
Carbon and sediment media reduce what dissolves in your water. A 0.01-micron membrane blocks what floats in it—different job entirely.
Ultra-fine filtration blocks contaminants larger than 0.01 microns—great for Marathon homes on city, well, or cistern water.
Blocks harmful microbes and microscopic particles for Marathon households.
Reduces turbidity for cleaner, clearer water in Marathon.
Activated carbon reduces chlorine, odors, and VOCs for Marathon water.
See how quickly trapped contaminants can build up in Marathon’s coastal environment.
Blocked by the 0.01 micron membrane
Ultra-fine plastic particles & colloids
Added to many municipal supplies in the Florida Keys
Adsorbed alongside lead & other toxic metals in Marathon water
Lead, mercury, nickel & chromium
Taste, odor & harsh chemicals—common concerns in the Keys
Volatile organics & herbicides (municipal or well/cistern)
That rotten-egg smell some Marathon well/cistern water can have
Sand, silt, moderate scale particles & debris—common in Keys wells/cisterns
Cloudiness, color, and organic growth—common concerns with well/cistern setups.
Advanced Filtration
Specialized stages in sequence: sediment, KDF-55 redox alloy, fine carbon, and a hollow-fiber ultrafiltration membrane.
Ultrafiltration brings RO-quality water to every tap in Marathon—no tank, no brine waste.
99.99% bacteria removal/reduction by blocking organisms outright—no chemical inactivation needed.
80,000-gallon capacity and long-life media keep upkeep to about once a year in the Florida Keys.
The Multi-Stage Advantage for Marathon
Pre-Filtration - Polypropylene
Captures larger particles and helps protect downstream filters, plumbing, and appliances from clogging—especially helpful for Keys well/cistern setups.
Copper / Zinc Redox & Bacteriostatic Media—helpful in warm, humid Keys conditions
A copper-zinc redox alloy that converts chlorine and precipitates dissolved heavy metals, while helping limit growth inside the housing—useful in humid, coastal Marathon conditions.
Fine Activated Carbon Block
Fine filtration plus activated carbon adsorption to handle chemicals, taste, odor and color—ideal for Marathon water.
<0.01 Micron Hollow-Fiber Barrier for Marathon water
The final barrier for Keys water. Hollow-fiber bundles with pores under 0.01 microns let water through and hold everything larger outside.
How It Works in Marathon
Raw water from your Marathon main line enters the inlet manifold at up to 80 PSI.
Sediment, KDF-55, and 0.5-micron carbon remove particles, metals, and chemicals in sequence.
The hollow-fiber membrane holds back what’s left, sending purified water to every tap at 15 GPM.
Engineered for
Whole-Home Protection in Marathon’s coastal conditions
Bottled-water quality from every tap in Marathon. Every day.
High-Flow Capacity
15 gallons per minute keeps showers, laundry, and the kitchen running—Marathon-busy mornings included.
Engineered for Maximum Performance in Marathon’s tropical climate
Uninterrupted flow for the entire home—great for busy Marathon households.
Helps protect plumbing, appliances & fixtures in coastal Marathon.
Cleaner, clearer water for Marathon families across the Florida Keys.
Premium media built for long service life in salty Keys air.
Roughly one service visit per year—simple for Marathon homeowners.
Inside the System
Contaminated water enters the system from municipal, well, or cistern sources.
Evenly distributes water across the filtration stages for consistent flow.
Removes sand, rust, silt, and larger particles—common in local well/cistern systems.
Reduces chlorine, odors, VOCs, and taste issues—great for Marathon tap water.
Bundles of hollow fibers create a membrane barrier that blocks bacteria, cysts, microplastics, turbidity, and fine suspended solids larger than 0.01 µm—ideal for Keys sediment control.
Collects purified water from the membrane fibers for your Marathon home.
Clean, filtered water exits the system for your Marathon home.
Flushes trapped sediment and backwash debris during service or a manual flush.
Regular maintenance and periodic flushing help ensure optimal performance and longer life—especially with Marathon’s coastal salt air and humidity.
How Reactive Osmosis (RO2) Works in Marathon
The sediment pre-screen captures sand, rust, silt, and other visible particles—helpful for Marathon well/cistern setups.
Activated carbon binds chlorine, VOCs, and odors—great for Marathon water.
Clean water passes through the hollow fibers; very fine contaminants stay outside—clean water for Marathon taps.
Contaminants Reduced
Conventional Whole-House RO
This System - Reactive Osmosis (RO2)
Traditional RO vs. Reactive Osmosis in Marathon
A traditional whole house reverse osmosis system and a Reactive Osmosis (RO2) system are both after the same result—reverse osmosis quality water at every tap in Marathon. They get there very differently, and the difference is what you live with day to day.
Traditional Reverse Osmosis
Reactive Osmosis (RO2)—great for the Florida Keys
Reactive Osmosis (RO2) delivers reverse osmosis quality water at every tap without a tank or a pump—great for Marathon and the Florida Keys. It is not a reverse osmosis membrane, so it does not lower dissolved salts or TDS the way a conventional RO system does; what it removes is everything particulate and biological, for the whole house, at full pressure.
Pure water isn’t a luxury in Marathon—it’s a Keys lifestyle.
Bottled water-quality water on tap,
throughout your Marathon home.
99.99% turbidity removal/reduction means
clearer ice, glasses & bathwater in Marathon.
99.99% bacteria removal—organisms
are blocked, not just treated.
Carbon-polished water for coffee, tea,
and all your favorite recipes in Marathon.
Tankless design delivers 15 GPM
with nothing to refill—ideal for full-home flow in the Keys.
80,000 gallon capacity keeps
maintenance down to an annual service in Marathon.
KDF-55 and 0.5-micron carbon take on chlorine, disinfection byproducts, taste, and odor at the main line—ideal for Marathon water.
The 5-micron pre-filter and membrane handle silt, rust, turbidity and biological contamination—great for Keys well/cistern setups.
Installed in Marathon and across Monroe County in the Florida Keys—usually in a single visit.
Conventional whole house reverse osmosis has three well-known drawbacks: it needs a storage tank, it needs a booster pump, and it sends a large share of your water down the drain as brine—then delivers it slowly. Reactive Osmosis (RO2) takes a different route to the same result. A hollow-fiber membrane with pores at or under 0.01 microns physically blocks bacteria, cysts, colloids, microplastics and many viruses—contaminants no carbon filter reliably stops—while running tankless at 15 gallons per minute. In the Florida Keys, that means full-pressure water without giving up valuable space to a big tank, and it’s a smart fit whether you’re on municipal supply or a local well/cistern setup. It's worth being clear about the tradeoff: RO2 is not a reverse osmosis membrane, and it won't lower dissolved salts or TDS the way a true RO system does. What it does remove is everything particulate and biological, which is what most homeowners are actually worried about, and it does it for the whole house at full pressure.
Treated at the main line, so kitchen, bath, laundry, and ice maker all get the same water across Marathon.
99.99% turbidity removal/reduction shows up first in Marathon ice cubes and drinking glasses.
KDF-55 redox media helps prevent scale buildup inside pipes, fixtures and appliances—helpful with Marathon’s moderate hardness.
Sediment and scale never reach your water heater, dishwasher or washing machine—great protection in coastal Marathon.
Chlorine reduction at the main line means softer-feeling water for skin, hair, and fabric in Marathon homes.
80,000 gallon capacity and long-life media keep upkeep to one easy annual visit in Marathon.
Whole House Reverse Osmosis in Marathon & the Florida Keys
Most Marathon homeowners searching for a whole-house reverse osmosis system want one thing: bottled-water quality at every tap—not just the one under the kitchen sink. Here’s how whole-home RO works, where it struggles, and why Reactive Osmosis (RO2) is how we install it in the Florida Keys.
A whole-house reverse osmosis system treats water where it enters your Marathon home—at the main line—so every fixture gets purified water: kitchen, bathrooms, laundry, ice maker, and outdoor spigots. That’s the difference between whole-home RO and a point-of-use unit that only treats one faucet while the rest of the house stays on untreated water.
A true reverse osmosis membrane produces water slowly and under pressure, so a whole house RO system has to bank it: a large pressurized storage tank, a booster pump to refill it, and a brine line that sends a significant share of your incoming water to the drain. Run two showers and the dishwasher at once and you can outrun the tank. The equipment footprint, the wasted water and the pump are the three reasons most homeowners abandon the idea—especially in Marathon, where space, salt air, and storm season already put systems to the test.
Reactive Osmosis reaches reverse osmosis quality water by filtration rather than by pressurized rejection—great for Marathon homes on municipal water, wells, or cistern systems. Multi-stage media—a 5-micron sediment pre-filter, KDF-55 copper-zinc redox alloy and a 0.5-micron carbon block—handle sediment, chlorine, heavy metals, VOCs, taste and odor. A hollow-fiber membrane with pores at or under 0.01 microns then blocks bacteria, cysts, colloids, microplastics and many viruses outright. No storage tank, no booster pump, no brine line, and 15 gallons per minute on demand.
Chlorine, chloramine byproducts, hydrogen sulfide, VOCs, pesticides and dissolved heavy metals such as lead, mercury, nickel and chromium are handled by the KDF-55 and carbon stages—helpful for Keys properties where sediment control can matter on municipal, well, or cistern systems. Bacteria, cysts, microplastics, turbidity and fine suspended solids are blocked by the membrane. Dissolved salts and TDS are the honest exception—lowering those takes a true RO membrane, which is the tradeoff you make in exchange for losing the tank, the pump and the brine.
Whole home reverse osmosis systems commonly run several thousand dollars once the tank, pump, plumbing and labor are counted. Our complete whole-house Reactive Osmosis (RO2) system is $2,995 installed - regularly $5,000, so you save $2,005. That price includes the cartridge housings, manifold, membrane vessel, professional installation, a water test and a system check before we leave—ideal for Marathon homes on municipal water or local well/cistern setups.
On Marathon municipal water, the KDF-55 and carbon stages target chlorine, disinfection byproducts, and taste/odor right at the main line. For Keys homes on well or cistern systems—and plumbing that sees sediment—the pre-filter and membrane work together to reduce silt, rust, turbidity, and biological contamination. We install whole-house RO-quality systems throughout Marathon and across Monroe County (Florida Keys).
Limited Time Offer for Marathon Homeowners
$2,995
Installed
Regularly
305-404-8790
info@bestwaterheater.com
