See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand for your Islamorada family—helping with common taste and odor concerns from municipal water.
The System Itself
The whole system fits under your sink and connects with quick-connect fittings—great for Islamorada homes where space matters. Four quick-change twist cartridges provide the filtration stages, with a UV chamber inline. There’s no bulky storage tank, so water is purified on demand instead of sitting and waiting.
The first cartridge catches rust, dirt, sand, and larger particles—helpful with storm-season impacts in Islamorada.
Carbon block media that reduces chlorine plus taste/odor concerns common with municipal water in Islamorada.
The heart of the system, rejecting dissolved solids and heavy metals and sending the concentrate to the drain.
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—great for everyday drinking in Islamorada.
Filtration Stages
Each stage handles what the one before it left behind. UV is the fourth step in the sequence—and it’s not filtration at all. It’s there to address what filters can’t catch, a smart extra layer in coastal Islamorada homes.
Removes rust, dirt, sand, and large particles—great for storm-season conditions in the Keys.
Reduces chlorine and the taste/odor issues many Islamorada homes notice.
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 for disinfection—included in the price on every system we install in Islamorada.
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 across Islamorada and the Florida Keys.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Islamorada homes.
2 UnitsInstalled
A lower price per unit on a two-system install for your Islamorada property
Great for a kitchen and wet bar—or a guest suite on Plantation Key or Windley Key.
3 or MoreInstalled
Our lowest per-unit price in Islamorada
For larger Islamorada homes, multi-unit properties, and light commercial spaces.
All prices are installed and include UV sterilization—no hidden fees. Not sure how many you need? We’ll walk your Islamorada 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 for Islamorada homes.
Typically 95% and up to 99.99%, bringing 200-500 PPM tap water to near 0 PPM, or below 25 PPM.
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 in humid, coastal Islamorada homes.
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 in the Florida Keys.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts.

The built-in UV lamp is included—no upgrade needed for your Islamorada home.

Fitted under your sink and commissioned by pros in Islamorada, Village of Islands.

We test your Islamorada water before and after, so you can see the difference.

No surprises—one low price includes everything for your Islamorada install.

Lower per-unit pricing when we install two or more—ideal for multi-sink Islamorada homes.
Independent Testing
You don’t have to take performance on faith. The system has been tested by an independent laboratory against the recognized standard for reverse osmosis drinking water systems—great peace of mind for Islamorada households.
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 visit in Islamorada so you know exactly what you’re starting from.
Perfect For
Point-of-use purification means the water you drink and cook with in Islamorada is the water that gets purified.
Cleaner Water. Better Living. In the Keys.
Installed by a Florida plumbing company that knows Keys conditions—and stands behind the work.
Built with premium materials for reliable, long-term performance in Islamorada’s coastal salt air.
The built-in UV lamp is included in the price on every unit we install in Islamorada.
We stand behind our products and service here in Islamorada.
Join homeowners across Monroe County who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in Islamorada.
Tankless purification as you draw—no storage tank, no waiting, perfect for busy Keys kitchens.
The built-in UV lamp helps eliminate bacteria, viruses, and microorganisms a filter can’t catch.
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 Islamorada’s tropical maritime climate, where salt air and storm season can be tough on plumbing and filtration equipment. 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 (great for municipal-water taste/odor concerns common in the Florida Keys). 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 Islamorada
$995
Installed
Regularly