See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand for your Thompson family.
The System Itself
The whole system fits under your sink and connects with quick-connect fittings. Four quick-change twist cartridges deliver the four filtration stages, with a UV chamber inline. With no bulky storage tank, you get purified water on demand—helpful in Florida’s humid, rainy seasons when source water can fluctuate.
The first cartridge catches rust, dirt, sand, and larger particles—helpful when seasonal heavy rains stir up water quality.
Carbon block media that reduces chlorine, odors, colors, and chemicals before the membrane—ideal for Florida 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—great for Thompson households.
Filtration Stages
Each stage handles something the one before it left behind. Here in Florida, seasonal heavy rains can impact well and surface-water quality—UV is step four, and it targets what filters can’t catch.
Removes rust, dirt, sand and large particles—especially after Florida’s heavy rains.
Removes chlorine, odors, colors, and chemicals for cleaner Thompson drinking water.
Removes up to 99% of dissolved solids, heavy metals, and more (results vary by Thompson water source).
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—especially helpful in Florida where seasonal heavy rains can impact water quality. It’s included in the price on every system we install.
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 Thompson, Florida.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Thompson homes.
2 UnitsInstalled
A lower price per unit on a two-system install—great for larger Thompson properties.
Great for a kitchen and wet bar, a second kitchen, or a guest suite in your Thompson home.
3 or MoreInstalled
Our lowest per-unit price
For larger Thompson homes, multi-unit properties, and light commercial spaces.
All prices are installed and include UV sterilization, with no hidden fees. Not sure what you need for your Thompson property (municipal or private well)? We’ll walk it with you.
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 Thompson homes.
Typically 95% and up to 99.99%, bringing 200–500 PPM tap water to near 0 PPM, or below 25 PPM (varies by Thompson 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—great for Thompson 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 Thompson homes.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts included.

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

Fits neatly under your sink in Thompson and is commissioned by professionals.

We test your Thompson 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 in your Thompson 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—great peace of mind for Thompson households.
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. In Thompson, we test your water during the visit—municipal or private well—so you know exactly 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 Thompson is the water that gets purified.
Cleaner Water. Better Living. In Thompson.
Installed by a Florida plumbing company that’s been doing this a long time—and stands behind the work for Thompson homes.
Built with premium materials for reliable, long-term performance in Thompson, FL.
The built-in UV lamp is included in the price on every unit we install in Thompson.
We stand behind our products and the quality of service we provide in Thompson.
Join homeowners in Thompson and across Florida who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for Thompson drinking, cooking, and everyday use.
Tankless purification as you draw—no storage tank, no waiting, just clean water in Thompson.
The built-in UV lamp helps eliminate bacteria, viruses, and microorganisms a filter 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—great for Thompson’s humid subtropical climate, where seasonal heavy rains can impact water quality. 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 Thompson
$995
Installed
Regularly