See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand for you and your family in Littman.
The System, Right Here in Littman
The whole system fits under your sink and connects with quick-connect fittings. Four quick-change twist cartridges carry the four filtration stages, and a UV chamber sits inline between them. There is no bulky storage tank, so your Littman water is purified on demand rather than sitting and waiting.
The first cartridge catches rust, dirt, sand, and large particles before anything downstream sees them.
Carbon block media that takes out chlorine, odors, colors, and chemicals ahead of the membrane—great for Littman tap water.
The heart of the system—rejecting dissolved solids and heavy metals and sending the concentrate to the drain for cleaner water in Littman.
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—great for everyday drinking in Littman.
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 from Littman water.
Removes chlorine, odors, colors, and chemicals from Littman water.
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—right here in Littman.
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, which is not filtration but disinfection—and it’s included in the price on every system we install in Littman.
Pricing
The systems are identical - the difference is how many you have installed on the same visit in Littman. Every unit includes UV sterilization and professional installation.
1 UnitInstalled
Regularly $2,000 - you save $1,005
A standard install that’s a great fit for most Littman kitchen sinks.
2 UnitsInstalled
A lower price per unit on a two-system install
Great for a kitchen and wet bar, a second kitchen, or a guest suite in your Littman home.
3 or MoreInstalled
Our lowest per-unit price in Littman
For larger Littman homes, multi-unit properties, and light commercial spaces.
All prices are installed in Littman and include UV sterilization—no hidden fees. Not sure how many you need? We’ll walk the 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 (Littman)
99.99%
Maximum TDS reduction for Littman homes
The T1-400 series tankless under-sink reverse osmosis system for Littman, FL.
Typically 95% and up to 99.99%, bringing 200–500 PPM tap water to near 0 PPM, or below 25 PPM—right here in Littman.
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 your Littman kitchen.
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 for your Littman home.
One Unit, Installed in Littman
$995
Installed
Regularly

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

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

Fitted under your sink and commissioned by professionals in Littman.

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

No surprises for Littman homeowners. One low price includes everything.

Lower per-unit pricing when we install two or more in Littman.
Independent Testing
You don’t have to take performance on faith. This system has been tested by an independent laboratory against the recognized 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—so Littman families can feel confident in every glass.
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 Littman visit so you know what you’re starting from.
Perfect For
It goes in at the point of use, so the water you actually drink and cook with in Littman is the water that gets purified.
Cleaner Water. Better Living. Right here in Littman.
Installed by a Florida plumbing company that’s been doing this a long time—and stands behind the work.
Built with premium materials for reliable, long-term performance in Littman, FL.
The built-in UV lamp is included in the price on every unit we install in Littman.
We stand behind our products and the quality of service we deliver in Littman.
Join homeowners across South Florida—including right here in Littman—who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in your Littman home.
The tankless design purifies as you draw, so there’s no storage tank and no waiting.
The built-in lamp helps eliminate bacteria, viruses, and microorganisms a filter can’t catch—extra peace of mind for Littman homes.
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. 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, Professionally Installed in Littman
$995
Installed
Regularly