See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand for your Lake Harbor family.
The System Itself
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 is no bulky storage tank, so the water is purified on demand—ideal for Lake Harbor’s warm, humid subtropical climate.
The first cartridge catches rust, dirt, sand, and larger particles before anything downstream sees them.
Carbon block media that reduces chlorine, odors, color, and chemicals before the membrane—great for canal/surface-water taste & odor shifts.
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-tasting water in Lake Harbor.
Filtration Stages
Each stage handles what the one before it left behind. UV is the fourth step in the sequence—and it isn’t filtration at all. It’s there to address what filters can’t catch, for extra peace of mind in Lake Harbor.
Removes rust, dirt, sand, and large particles—helpful for canal and surface-water sources.
Removes chlorine, odors, color, and chemicals—ideal for Lake Harbor taste-and-odor swings.
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.
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 reassuring when source water comes from surface water/canals around the Lake Okeechobee area in Palm Beach County.
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 Lake Harbor.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Lake Harbor homes.
2 UnitsInstalled
A lower price per unit when you install two systems at the same Lake Harbor address.
Great for a kitchen and wet bar, a second kitchen, or a guest suite in your Lake Harbor home.
3 or MoreInstalled
Our lowest per-unit price
Ideal for larger Lake Harbor 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 the Lake Harbor 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 for Lake Harbor homes.
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—perfect for Lake Harbor 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—less plastic for Lake Harbor homes.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & every part needed for your Lake Harbor install.

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

Fitted under your sink and professionally commissioned in Lake Harbor.

We test your Lake Harbor 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 Lake Harbor home.
Independent Testing
You don’t have to take the performance on faith. The system has been tested by an independent laboratory against the recognized standard for reverse osmosis drinking water systems—great for Lake Harbor homes on surface water and canals.
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 on the visit in Lake Harbor so you know what you’re starting from.
Perfect For
It installs at the point of use—so the water you drink and cook with in Lake Harbor is the water that gets purified.
Cleaner Water. Better Living. Right here in Lake Harbor.
Installed by a Florida plumbing company that’s been doing this a long time—and stands behind the work for Lake Harbor homes.
Built with premium materials for reliable, long-term performance in humid Florida kitchens.
The built-in UV lamp is included in the price on every unit we install in Lake Harbor.
We stand behind our products and the quality of our service in Lake Harbor.
Join Lake Harbor 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 Lake Harbor.
Tankless purification as you draw—no storage tank, no waiting, just fresh water for Lake Harbor homes.
The built-in UV lamp helps eliminate bacteria, viruses, and microorganisms a filter can’t catch—extra peace of mind in Lake Harbor.
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 Lake Harbor 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 (helpful when surface water and canal sources can bring seasonal taste-and-odor issues). 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 Lake Harbor
$995
Installed
Regularly