See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand—built for Port Sewall living on the Treasure Coast.
The System Itself
Designed for Port Sewall kitchens, the whole system fits under your sink and connects with quick-connect fittings. Four quick-change twist cartridges handle the filtration stages, with a UV chamber inline. With no bulky storage tank, you get purified water on demand—so it doesn’t sit and wait.
First-stage cartridge that catches rust, dirt, sand, and larger particles—before they reach the rest of your system.
Carbon block media that reduces chlorine, odors, colors and chemicals before the membrane—great for Stuart/Port Sewall water.
The heart of the system, rejecting dissolved solids and heavy metals—especially helpful with hard coastal water in the Stuart/Port Sewall area.
The final cartridge polishes the water and adds beneficial minerals back for balanced pH—great for Port Sewall households.
Filtration Stages
Each stage handles something the one before it left behind. UV is the fourth step in the sequence and the one stage that is not filtration at all - it is there to deal with what a filter cannot catch.
Removes rust, dirt, sand, and large particles—helpful with coastal water supplies.
Reduces chlorine, odors, colors and chemicals in Port Sewall tap water.
Removes up to 99% of dissolved solids, heavy metals and more—helps reduce mineral scale common in Port Sewall.
Kills 99.99% of bacteria, viruses and microorganisms.
Adds beneficial minerals for a balanced, healthy pH—perfect for Port Sewall families.
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—not filtration—and it’s included in the price on every system we install in Port Sewall.
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 for Port Sewall and Martin County homes.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Port Sewall homes.
2 UnitsInstalled
A lower per-unit price when you install two systems in the same Port Sewall home.
Great for a kitchen and wet bar, a second kitchen, or a guest suite in Port Sewall.
3 or MoreInstalled
Our lowest per-unit price in Port Sewall
Ideal for larger Martin County homes, multi-unit properties, and light commercial spaces.
All prices are installed and include UV sterilization, with no hidden fees. Not sure how many you need? We’ll walk the property with you anywhere in Port Sewall and Stuart.
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 Port Sewall.
Typically 95% and up to 99.99%, bringing 200–500 PPM tap water to near 0 PPM, or below 25 PPM—results vary with Port Sewall source water.
The UV lamp operates automatically based on water flow pressure, and can be adjusted for your Port Sewall home.
Keeps water fresh, saves under-sink space, and helps prevent secondary contamination in Port Sewall kitchens.
About 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 toward the Indian River Lagoon.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—installed in Port Sewall.

The built-in UV lamp is included—no upgrade needed.

Fitted under your sink and professionally commissioned in Port Sewall.

We test your Port Sewall-area water before and after, so you can see the difference.

No surprises for Port Sewall homes. One low price includes everything.

Lower per-unit pricing when we install two or more in your Port Sewall home.
Independent Testing
You do not have to take the 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—especially with hard coastal water around Port Sewall. We test your water during the visit so you know what you’re starting from.
Perfect For
Installs at the point of use, so the water you drink and cook with in Port Sewall is the water that gets purified.
Cleaner Water. Better Living in Port Sewall.
Installed by a Florida plumbing company serving Martin County that’s been doing this a long time—and stands behind the work.
Built with premium materials for reliable, long-term performance in Port Sewall’s coastal climate.
The built-in UV lamp is included in the price on every unit we install in Port Sewall.
We stand behind our products and the quality of our service here in Port Sewall.
Join homeowners across Port Sewall and the Stuart area who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in Port Sewall.
Tankless purification as you draw—no storage tank, no waiting, even in humid Treasure Coast 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—perfect for Port Sewall homes dealing with hard, coastal water that can leave mineral scale behind. 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 Port Sewall
$995
Installed
Regularly