See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand—ideal for Williamsburg families dealing with Central Florida’s hard, mineral-rich water.
The System Itself
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 the water is purified on demand rather than sitting and waiting—ideal for busy Williamsburg kitchens.
The first cartridge catches rust, dirt, sand, and large particles before they move through your Williamsburg home’s system.
Carbon block media that reduces chlorine, odors, colors and chemicals ahead of the membrane—great for Central Florida tap water.
The heart of the system, rejecting dissolved solids and heavy metals and sending the concentrate to the drain—helpful with Central Florida’s mineral-rich water.
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—great for Orange County homes.
Filtration Stages
Each stage handles what the one before it left behind—great for Central Florida’s mineral-rich, hard water. UV is the fourth step in the sequence, and the one stage that is not filtration at all; it’s there to deal with what a filter cannot catch.
Removes rust, dirt, sand and large particles—helpful with Central Florida’s mineral-rich water.
Reduces chlorine, odors, colors and chemicals in Orange County tap water.
Removes up to 99% of dissolved solids, heavy metals and more—helpful for Central Florida’s hard 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 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 Williamsburg.
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 Williamsburg-area homes.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Williamsburg homes.
2 UnitsInstalled
A lower price per unit on a two-system install for Williamsburg homes.
Ideal for a kitchen and wet bar, a second kitchen, or a guest suite—great for Williamsburg homes that entertain.
3 or MoreInstalled
Our lowest per-unit price
For larger Williamsburg 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 your Williamsburg 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—results vary with Orange County source water.
The lamp operates automatically based on water flow pressure, and can be adjusted for your home.
Keeps water fresh, saves under-sink space, and helps prevent secondary contamination—no tank sitting in Florida heat.
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—less plastic headed to Orange County landfills.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—ready for your Orange County home.

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

Fitted under your sink and commissioned by pros serving Williamsburg and nearby Orange County.

We test your Williamsburg 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 Williamsburg home.
Independent Testing
You don’t have to take performance on faith. The system has been tested by an independent laboratory against the recognised standard for reverse osmosis drinking water systems—ideal for Orange County homes on mineral-rich groundwater.
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 visit, so you know exactly what you’re starting from in your Williamsburg home.
Perfect For
It installs at the point of use, so the water you drink and cook with in your Williamsburg kitchen is the water that gets purified.
Cleaner Water. Better Living. In Williamsburg.
Installed by a Florida plumbing company that’s been doing this a long time—and stands behind the work for Williamsburg homeowners.
Built with premium materials for reliable, long-term performance in Central Florida homes.
The built-in UV lamp is included in the price on every unit we install in Williamsburg.
We stand behind our products and quality of service here in Orange County.
Join homeowners across the Orlando metro who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in Williamsburg.
Tankless purification as you draw—no storage tank, no waiting, just fresh water in Williamsburg.
The built-in UV lamp helps eliminate bacteria, viruses, and microorganisms filters 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—ideal for mineral-rich Central Florida water. 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 Williamsburg
$995
Installed
Regularly