See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand for Saint James City families.
The Saint James City System
The whole system fits under your sink and connects with quick-connect fittings. Four quick-change twist cartridges handle the four filtration stages, and a UV chamber sits inline between them. There’s no bulky storage tank, so your Saint James City water is purified on demand rather than sitting and waiting.
The first cartridge—catching 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.
The heart of the system—rejecting dissolved solids and heavy metals and sending the concentrate to the drain for cleaner water in Saint James City.
The final cartridge, polishing the water and adding beneficial minerals back for a balanced pH—great for everyday drinking in Saint James City.
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 common in household water.
Removes chlorine, odors, colors, and chemicals.
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 Saint James City.
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—it’s included in the price on every system we install in Saint James City.
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 Saint James City.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install—and the right fit for a kitchen sink in most Saint James City homes.
2 UnitsInstalled
A lower price per unit on a two-system install
Great for a kitchen and a wet bar, a second kitchen, or a guest suite in Saint James City.
3 or MoreInstalled
Our lowest per-unit price in Saint James City
For larger Saint James City homes, multi-unit properties, and light commercial spaces.
All prices are installed in Saint James City 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
99.99%
Maximum TDS reduction for Saint James City water
The T1-400 series tankless under-sink reverse osmosis system for Saint James City.
Typically 95% and up to 99.99%, bringing 200–500 PPM tap water to near 0 PPM, or below 25 PPM.
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.
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 Saint James City home.
One Unit, Installed
$995
Installed
Regularly

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

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

Fitted under your sink and commissioned by our pros in Saint James City.

We test your Saint James City water before and after, so you can see the difference.

No surprises for Saint James City homes. One low price includes everything.

Lower per-unit pricing when we install two or more in Saint James City.
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 Saint James City 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 Saint James City visit 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 is the water that gets purified in your Saint James City home.
Cleaner Water. Better Living. In Saint James City.
Installed by a Florida plumbing company that’s been doing this a long time—and stands behind the work for Saint James City homes.
Built with premium materials for reliable, long-term performance in Saint James City.
The built-in UV lamp is included in the price on every unit we install in Saint James City.
We stand behind our products and the quality of service we provide in Saint James City.
Join homeowners across South Florida—including Saint James City—who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in Saint James City.
The tankless design purifies as you draw, so there’s no storage tank and no waiting—perfect for Saint James City kitchens.
The built-in lamp helps eliminate bacteria, viruses and microorganisms a filter can’t catch—extra peace of mind for Saint James City 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—ideal for Saint James City homes. 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 Saint James City
$995
Installed
Regularly