See the purity, trust the technology. A tankless under-sink system delivering ultra-pure, clean, refreshing water on demand—built for Lely’s year-round water use and hard-water conditions.
The System Itself
Designed to fit under your sink and connect with quick-connect fittings. Four twist cartridges provide four filtration stages, with an inline UV chamber. No bulky tank—purified water on demand for busy Lely homes year-round.
First cartridge catches rust, dirt, sand, and sediment—helpful after seasonal heavy rains in South Florida.
Carbon block media that reduces chlorine, odors, colors, and chemicals before the membrane—ideal for Lely water.
The heart of the system, rejecting dissolved solids and heavy metals—helpful for Southwest Florida’s mineral-rich (often hard) groundwater.
The final cartridge polishes the water and adds beneficial minerals back for balanced pH—great for Lely families.
Filtration Stages
Each stage handles what the one before it left behind—helpful for mineral-rich groundwater common around Lely. UV is the fourth step in the sequence 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—especially useful after heavy rain.
Reduces chlorine, odors, colors, and chemicals in Lely tap water.
Removes up to 99% of dissolved solids, heavy metals, and more—helpful for mineral-rich Southwest Florida water.
Kills 99.99% of bacteria, viruses and microorganisms.
Adds beneficial minerals back for a balanced, healthy pH—great for Lely households.
Four filtration stages plus UV sterilization. Steps 1–3 and 5 are filtration; step 4 is the built-in UV lamp for disinfection. It’s included in the price on every system we install in Lely.
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 Lely and the Naples–Marco Island area.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Lely homes.
2 UnitsInstalled
A lower price per unit on a two-system install in your Lely home
Ideal for a Lely kitchen and wet bar—or a guest suite.
3 or MoreInstalled
Our lowest per-unit price
Ideal for larger Lely homes, multi-unit properties, and light commercial spaces in Collier County.
All prices are installed and include UV sterilization, with no hidden fees. Not sure how many you need for your Lely property? We’ll walk it 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—results vary by Lely source water.
The lamp operates automatically based on water flow pressure and can be adjusted—ideal for year-round use in humid South Florida.
Keeps water fresh, saves under-sink space, and helps prevent secondary contamination—important during seasonal heavy rains in Collier County.
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—great for Lely households.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—ready for Lely homes.

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

Fitted under your sink and commissioned by local pros serving Lely and Collier County.

We test your water before and after—so you can see the difference in your Lely home.

No surprises. One low price includes everything.

Lower per-unit pricing when we install two or more in your Lely home.
Independent Testing
You don’t 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—reassuring when seasonal heavy rains can impact local water quality in Southwest Florida.
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—helpful for mineral-rich Southwest Florida water.
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 Lely so you know exactly what you’re starting from.
Perfect For
Point-of-use purification—so the water you drink and cook with in your Lely home is what gets purified.
Cleaner Water. Better Living in Lely.
Installed by a Florida plumbing company serving Lely and Collier County—and we stand behind the work.
Built with premium materials for reliable, long-term performance in Collier County homes.
The built-in UV lamp is included in the price on every unit we install in Lely.
We stand behind our products and the quality of service we deliver in Lely.
Join Lely homeowners across the Naples–Marco Island area who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in Lely—no more hard-water taste.
The tankless design purifies as you draw, so there’s no storage tank and no waiting—perfect for busy Lely kitchens.
The built-in UV lamp helps eliminate bacteria, viruses, and microorganisms—extra protection during Southwest Florida’s rainy season.
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—great for year-round water use in Lely’s warm, humid climate. 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—especially helpful when seasonal heavy rains impact water quality in Southwest Florida.
One Unit, Installed in Lely
$995
Installed
Regularly