See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand—great for Rainbow Lakes Estates families.
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, and a UV chamber sits inline. There’s no bulky storage tank, so water is purified on demand—great for Rainbow Lakes well-water households.
The first cartridge catches rust, dirt, sand, and larger particles—helpful for mineral-rich well water around Rainbow Lakes.
Carbon block media that reduces chlorine, odors, color, and chemicals before the membrane—ideal for mineral-rich well water.
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—nice with hard water.
Filtration Stages
Each stage handles what the one before it left behind. For Rainbow Lakes homes on mineral-rich well water, that layered approach matters. 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—common in well water around Rainbow Lakes.
Reduces chlorine, odors, color, and chemicals.
Removes up to 99% of dissolved solids, heavy metals, and more—helpful for hard, mineral-rich well water.
Kills 99.99% of bacteria, viruses, and microorganisms.
Adds beneficial minerals for a balanced, healthy pH.
Four filtration stages plus UV sterilization. Steps 1–3 and 5 are the filtration stages; step 4 is the built-in UV lamp for disinfection—included in the price on every system we install in Rainbow Lakes.
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 Rainbow Lakes and the Marion County area.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Rainbow Lakes homes.
2 UnitsInstalled
A lower price per unit on a two-system install for Rainbow Lakes homes
Great for a kitchen plus a wet bar, a second kitchen, or a guest suite in Rainbow Lakes Estates.
3 or MoreInstalled
Our lowest per-unit price in Rainbow Lakes
For larger Rainbow Lakes homes, multi-unit properties, and light commercial spaces in Marion County.
All prices are installed and include UV sterilization, with no hidden fees. Not sure how many you need? We’ll walk your Rainbow Lakes 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.
The UV lamp operates automatically based on water-flow pressure and can be adjusted.
Keeps water fresh, saves under-sink space, and helps prevent secondary contamination—ideal in humid Florida homes.
One gallon of wastewater for every 1.5 gallons of purified water produced.
One full cartridge set is roughly the equivalent of 8,000 bottles of water—great for Rainbow Lakes homes on well water.
One Unit, Installed
$995
Installed
Regularly

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

The built-in UV lamp is included in the price—no add-ons.

Fitted under your sink and commissioned by pros—ideal for Rainbow Lakes well water setups.

We test your water before and after—great for Rainbow Lakes well water and hard-water concerns.

No surprises. One low price includes everything.

Lower per-unit pricing when we install two or more in your Rainbow Lakes 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 - a smart choice for Rainbow Lakes homes on well water.
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 Rainbow Lakes water during the visit—especially helpful for mineral-rich private wells—so you know what you’re starting from.
Perfect For
Point-of-use installation means the water you drink and cook with in Rainbow Lakes is the water that gets purified.
Cleaner Water. Better Living in Rainbow Lakes.
Installed by a Florida plumbing company that knows Marion County water—and stands behind the work.
Built with premium materials for reliable, long-term performance in humid Florida conditions.
The built-in UV lamp is included in the price on every unit we install in Marion County.
We stand behind our products and the quality of our service in Rainbow Lakes.
Join Rainbow Lakes homeowners who count on Mr. Pure Water for cleaner, better-tasting water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking and everyday use in Rainbow Lakes.
Tankless purification as you draw—no storage tank and no waiting, even in busy Rainbow Lakes kitchens.
The built-in UV lamp helps eliminate bacteria, viruses and microorganisms—extra peace of mind for well water.
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 Rainbow Lakes homes on mineral-rich groundwater. 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 Rainbow Lakes
$995
Installed
Regularly