See the purity, trust the technology. This tankless under-sink system delivers ultra-pure, clean, refreshing water on demand—an ideal upgrade for Killarney homes dealing with hard, mineral-rich groundwater.
The System Itself
Designed to fit under your sink with quick-connect fittings. Four quick-change twist cartridges provide four filtration stages, with an inline UV chamber. No bulky tank—so Killarney families get purified water on demand, not stored water.
Stage one filtration—catching rust, dirt, sand, and larger particles before they move downstream.
Carbon block media that reduces chlorine, odors, colors, and chemicals before the membrane—ideal for mineral-rich Floridan aquifer water.
The heart of the system—rejecting dissolved solids and heavy metals, then sending the concentrate to the drain.
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—nice for Orange County’s hard water.
Filtration Stages
Each stage handles what the one before it left behind—helpful for Orange County’s mineral-rich groundwater from the Floridan aquifer. UV is the fourth step and the one stage that is not filtration at all; it’s there to handle what filters can’t catch.
Removes rust, dirt, sand, and large particles from mineral-rich groundwater.
Reduces chlorine, odors, colors, and chemicals from Killarney-area water.
Removes up to 99% of dissolved solids, heavy metals, and more—helpful for hard, mineral-rich Floridan aquifer water.
Kills 99.99% of bacteria, viruses, and microorganisms.
Adds beneficial minerals for a balanced, healthy pH—great for Orange County homes.
Four filtration stages plus UV sterilization. Steps 1–3 and 5 are the four filtration stages; step 4 is the built-in UV lamp for disinfection (not filtration)—included in the price on every system we install in Killarney.
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 across Killarney and the Orange County area.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install—and the right fit for a kitchen sink in most Killarney homes.
2 UnitsInstalled
A lower price per unit when you install two systems in the same Killarney home.
Great for a kitchen and wet bar—or a guest suite for visiting family in Killarney.
3 or MoreInstalled
Our lowest per-unit price
Ideal for larger Orange County 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 Killarney 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 for Killarney.
Typically 95% and up to 99.99%, bringing 200–500 PPM tap water down near 0 PPM, or below 25 PPM (source water varies in Orange County).
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 humid Florida kitchens.
One gallon of wastewater for every 1.5 gallons of purified water produced.
One complete set of cartridges is roughly the equivalent of 8,000 bottles of water—great for Killarney households.
One Unit, Installed in Killarney
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—ready for Killarney homes.

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

Fitted under your sink and commissioned by pros serving Killarney and nearby towns.

We test your Killarney water before and after, so you can see the difference.

No surprises for Killarney homes. One low price includes everything.

Lower per-unit pricing when we install two or more in your Killarney home.
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—great peace of mind for Killarney 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. We test your water during the visit, so Killarney-area homeowners know exactly what they’re starting with.
Perfect For
Purifies at the point of use—so the water you drink and cook with in Killarney is the water that gets treated.
Cleaner Water. Better Living in Killarney.
Installed by a Florida plumbing company serving Orange County homes—and we stand behind the work.
Built with premium materials for reliable, long-term performance in Killarney homes.
The built-in UV lamp is included in the price on every unit we install in Orange County.
We stand behind our products and the quality of our service in Killarney.
Join homeowners around Killarney and the Orlando metro who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday life in Killarney.
Tankless purification as you draw—no storage tank, no waiting, perfect for busy Killarney kitchens.
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—great for Killarney homes that draw mineral-rich groundwater from the Floridan aquifer. 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 Killarney
$995
Installed
Regularly