See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand for Key Biscayne families.
The System Itself
The whole system fits under your sink and connects with quick-connect fittings. Four quick-change twist cartridges provide the four filtration stages, with a UV chamber inline. There’s no bulky storage tank, so water is purified on demand—ideal for Key Biscayne kitchens.
The first cartridge catches rust, dirt, sand, and larger particles—helpful with mineral scale common in Miami-Dade water.
Carbon block media that reduces chlorine, odors, color and chemicals before the membrane—great for Miami-Dade tap water.
The heart of the system—helps reject dissolved solids and heavy metals common in hard water, sending the concentrate to the drain.
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH.
Filtration Stages
Each stage handles what the one before it left behind—helpful for hard municipal water in Miami-Dade County. UV is the fourth step and the one stage that is not filtration at all; it targets what a filter cannot catch.
Removes rust, dirt, sand, and large particles—helpful with scale from hard water.
Reduces chlorine, odors, color and chemicals from your tap water.
Removes up to 99% of dissolved solids, heavy metals, and more.
Kills 99.99% of bacteria, viruses and microorganisms.
Adds beneficial minerals for a balanced, healthy pH.
Four filtration stages plus UV sterilization. Steps 1 to 3 and 5 are the four filtration stages; step 4 is the built-in UV lamp. It’s included in the price on every system we install in Key Biscayne.
Pricing
The systems are identical—the difference is how many you have installed on the same visit. Every unit includes UV sterilization and professional installation in Key Biscayne.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Key Biscayne homes.
2 UnitsInstalled
A lower price per unit on a two-system install for your Key Biscayne home.
Ideal for a kitchen and wet bar, a second kitchen, or a guest suite in Key Biscayne.
3 or MoreInstalled
Our lowest per-unit price in Key Biscayne
For larger Key Biscayne homes, multi-unit properties, and light commercial spaces in Miami-Dade.
All prices are installed and include UV sterilization, with no hidden fees. Not sure how many you need? We’ll walk your Key Biscayne property with you during the visit.
Technical Specifications
The SimPure ROULP-3012-400-T1, from the T1-400 series. A tankless build that produces up to 400 gallons a day on demand, so the water is made when you draw it rather than stored.
400 GPD
Production rate
1.5:1
Pure-to-drain ratio
1,057 gal
Per full cartridge set
99.99%
Maximum TDS reduction
The T1-400 series tankless under-sink reverse osmosis system.
Typically 95% and up to 99.99%, bringing 200–500 PPM tap water to near 0 PPM, or below 25 PPM (source water varies across Miami-Dade).
The lamp operates automatically based on water flow pressure, and can be adjusted.
Keeps water fresh, saves under-sink space, and helps prevent secondary contamination.
One gallon of wastewater for every 1.5 gallons of purified water produced.
A complete set of cartridges is roughly the equivalent of 8,000 bottles of water—less plastic headed off the Rickenbacker Causeway.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—ready for Key Biscayne installation.

The built-in UV lamp is included in the price—not an upgrade.

Fitted under your sink and commissioned by local pros serving Key Biscayne.

We test your water before and after—so you can see results on your Key Biscayne water.

No surprises. One low price includes everything.

Lower per-unit pricing when we install two or more in your Key Biscayne home.
Independent Testing
You do not have to take performance on faith. The system has been tested by an independent laboratory against the recognised standard for reverse osmosis drinking water systems.
Testing covers the removal of over 99.99% of more than 1,000 contaminants, including total dissolved solids such as fluoride, nitrates and nitrites; PFAS, PFOA and PFOS; heavy metals such as lead and arsenic; and chloride.
Made by SimPure
SimPure is based in Seattle, Washington and has served the USA since 2006, with trained water specialists available for product support.
Reduction performance varies with source water and household usage. We test your water during the Key Biscayne visit so you know what you’re starting from.
Perfect For
Point-of-use purification means the water you drink and cook with in Key Biscayne is the water that gets purified.
Cleaner Water. Better Living. In Key Biscayne.
Installed by a Florida plumbing company serving Miami-Dade County—done right, and we stand behind the work.
Built with premium materials for reliable, long-term performance—even with coastal salt air around Key Biscayne.
The built-in UV lamp is included in the price on every unit we install in Key Biscayne.
We stand behind our products and the quality of our work in Key Biscayne.
Join Key Biscayne homeowners who choose Mr. Pure Water for cleaner, better-tasting water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday life in Key Biscayne.
Tankless purification as you draw—no storage tank, no waiting, perfect for busy Key Biscayne kitchens.
The built-in UV lamp helps eliminate bacteria, viruses and microorganisms beyond filtration alone.
The Mr. Pure Water Under-Sink Reverse Osmosis System with UV Sterilization is a tankless point-of-use system that fits neatly under your sink with quick-connect fittings—ideal for Key Biscayne homes dealing with hard municipal water and mineral scale. Cold water enters a PP sediment cartridge that catches rust, dirt, sand and large particles, then a CTO carbon block that takes out chlorine, odors, colors and chemicals. The reverse osmosis membrane removes up to 99% of dissolved solids and heavy metals, sending the concentrate to the drain at a 1.5:1 pure-to-drain ratio. A built-in UV lamp then kills 99.99% of bacteria, viruses and microorganisms - the one thing a filter cannot catch - operating automatically on water flow pressure. An alkaline and mineral stage finishes the water, putting beneficial minerals back for a balanced pH. Five stages in all - PP, CTO, RO, UV and alkaline - producing up to 400 gallons a day on demand, with no bulky storage tank to hold water, take up space or invite secondary contamination.
One Unit, Installed in Key Biscayne
$995
Installed
Regularly