See the purity and trust the technology. This tankless under-sink system delivers ultra-clean, refreshing water on demand for your Longwood family—without a bulky storage tank.
The System Itself
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—great for busy Longwood kitchens.
The first cartridge catches rust, dirt, sand, and large particles—helpful with mineral-rich Central Florida water.
Carbon block media that reduces chlorine, odors, color, and chemicals before the membrane—helpful with mineral-rich Central Florida water.
The heart of the system—rejects dissolved solids and heavy metals and sends the concentrate to the drain (ideal for hard Central Florida water).
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—nice for Longwood’s mineral-rich water.
Filtration Stages
Each stage handles something the one before it left behind. In Seminole County, mineral-rich (hard) groundwater can leave buildup behind—UV is the fourth step and the one stage that is not filtration at all; it’s there to deal with what a filter cannot catch.
Removes rust, dirt, sand and large particles—great for Central Florida’s mineral-rich water.
Reduces chlorine, odors, color, and chemicals for cleaner-tasting water in Longwood.
Removes up to 99% of dissolved solids, heavy metals, and more—helping combat scale from hard Seminole County water.
Kills 99.99% of bacteria, viruses and microorganisms.
Adds beneficial minerals back 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 (disinfection, not filtration). It’s included in the price on every system we install in Longwood.
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 Longwood-area homes.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install—and the right fit for a kitchen sink in most Longwood homes.
2 UnitsInstalled
A lower price per unit on a two-system install for your Longwood home
Great for a kitchen and wet bar, a second kitchen, or a guest suite in your Longwood home.
3 or MoreInstalled
Our lowest per-unit price in Longwood
Great for larger Longwood 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 your Longwood property with you as part of 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 Longwood homes.
Typically 95% and up to 99.99%, bringing 200–500 PPM tap water to near 0 PPM, or below 25 PPM—results vary by Longwood source water.
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 Central Florida homes.
One gallon of wastewater for every 1.5 gallons of purified water produced.
One full set of cartridges replaces about 8,000 bottles—great for Longwood households tired of stocking cases.
One Unit, Installed in Longwood
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—ready for Longwood install.

The built-in UV lamp is part of the price, not an upgrade.

Fitted under your sink and commissioned by pros serving Longwood & Seminole County.

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

No surprises—one low price includes everything.

Lower per-unit pricing when we install two or more—perfect for larger Longwood homes.
Independent Testing
You don’t have to take the performance on faith. This system has been tested by an independent laboratory against the recognized standard for reverse osmosis drinking water systems—great peace of mind for Longwood families.
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 Longwood so you know exactly what you’re starting from.
Perfect For
Point-of-use filtration means the water you drink and cook with in Longwood is the water that gets purified.
Cleaner Water for Longwood Living.
Installed by a Florida plumbing company trusted around Longwood and Seminole County—and we stand behind the work.
Built with premium materials for reliable, long-term performance in Longwood’s humid subtropical climate.
The built-in UV lamp is included in the price on every unit we install in Longwood.
We stand behind our products and the quality of service we provide in Longwood.
Join Longwood homeowners across Seminole County who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday life in Longwood.
Tankless purification as you draw—no storage tank, no waiting, perfect for busy Longwood kitchens.
The built-in UV lamp helps eliminate bacteria, viruses, and microorganisms filters 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 Longwood homes dealing with Central Florida’s mineral-rich (hard) water. 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 Longwood
$995
Installed
Regularly