See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand for your Monkey Box home—great peace of mind after storms and heavy rainfall.
The System Itself
Designed for Monkey Box kitchens: the system fits under your sink and connects with quick-connect fittings. Four quick-change twist cartridges provide the filtration stages, and a UV chamber sits inline between them. There’s no bulky storage tank, so water is purified on demand instead of sitting and waiting.
The first cartridge catches rust, dirt, sand, and storm-stirred sediment before anything downstream sees it.
Carbon block media that reduces chlorine, odors, colors, and chemicals before the membrane—helpful after heavy Florida rains.
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—ideal for Monkey Box families.
Filtration Stages
Each stage handles what the one before it leaves behind. UV is the fourth step in the sequence—and it’s not filtration at all. It’s there to address what filters can’t catch, especially helpful after Florida storms and heavy rainfall.
Removes rust, dirt, sand, and large particles—especially after heavy Florida rains.
Removes chlorine, odors, colors, and chemicals—great for Monkey Box tap water.
Removes up to 99% of dissolved solids, heavy metals and more—great for Monkey Box’s storm-season water changes.
Kills 99.99% of bacteria, viruses and microorganisms.
Adds beneficial minerals 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 for disinfection—extra reassurance for Monkey Box during hurricane season and after heavy rain.
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 in Monkey Box.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Monkey Box homes.
2 UnitsInstalled
A lower price per unit on a two-system install for your Monkey Box home.
Great for a Monkey Box kitchen and wet bar, a second kitchen, or a guest suite.
3 or MoreInstalled
Our lowest per-unit price
For larger Monkey Box 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 during your Monkey Box 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 in Monkey Box.
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—especially useful in humid Florida kitchens.
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 Monkey Box homes.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—ready for Monkey Box installation.

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

Fitted under your sink and commissioned by pros—perfect for Monkey Box homes.

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

No surprises. One low price includes everything.

Lower per-unit pricing when we install two or more in your Monkey Box home.
Independent Testing
You don’t have to take performance on faith. The 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.
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 Monkey Box visit so you know exactly what you’re starting from.
Perfect For
It installs at the point of use, so the water you drink and cook with in Monkey Box is the water that gets purified.
Cleaner Water. Better Living. In Monkey Box.
Installed by a Florida plumbing company that’s done this for years—and stands behind the work in Monkey Box.
Built with premium materials for reliable, long-term performance in Florida’s humid subtropical climate.
The built-in UV lamp is included in the price on every unit we install in Monkey Box.
We stand behind our products and the quality of our service in Monkey Box.
Join Monkey Box homeowners who choose Mr. Pure Water for cleaner, better-tasting water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in Monkey Box.
The tankless design purifies as you draw—so Monkey Box families get fresh water with no tank and no waiting.
The built-in UV lamp helps eliminate bacteria, viruses, and microorganisms—extra peace of mind in Monkey Box after storms.
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 humid subtropical Monkey Box, Florida, especially after heavy rains and hurricane season when source-water turbidity can rise. 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 Monkey Box
$995
Installed
Regularly