See the purity, trust the technology. A tankless under-sink system that delivers ultra-pure, clean, refreshing water on demand—built for Bertha homes dealing with hard, limestone-influenced groundwater.
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. With Bertha’s hard, limestone-influenced groundwater, tankless on-demand purification helps keep water fresh—no bulky storage tank needed.
The first cartridge catches rust, dirt, sand, and big particles—helpful with Florida groundwater and scale-prone plumbing.
Carbon block media that reduces chlorine, odors, colors and chemicals before the membrane—great for Bertha’s groundwater-fed supplies.
The heart of the system, rejecting dissolved solids and heavy metals and sending the concentrate to the drain—helpful with Bertha’s hard water.
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—great for Bertha, FL families.
Filtration Stages
Each stage handles something the one before it left behind. And in inland Florida, where limestone-influenced groundwater can mean hard water and scale, that layered approach matters. 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—before they can add to Bertha scale buildup.
Removes chlorine, odors, colors and chemicals—so Bertha water tastes clean and fresh.
Removes up to 99% of dissolved solids, heavy metals and more—helpful for Bertha’s hard water and scale issues.
Kills 99.99% of bacteria, viruses, and microorganisms.
Adds beneficial minerals for a balanced, healthy pH—great for Bertha, FL drinking water.
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—included in the price on every system we install in Bertha.
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 Bertha.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most Bertha homes.
2 UnitsInstalled
A lower price per unit on a two-system install for your Bertha home.
Ideal for a kitchen and wet bar, a second kitchen, or a guest suite in Bertha.
3 or MoreInstalled
Our lowest per-unit price in Bertha
For larger Bertha 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 Bertha property with you as part of 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 Bertha water
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 Bertha source water.
The lamp operates automatically based on water flow pressure, and can be adjusted—simple for busy Bertha households.
Keeps water fresh, saves under-sink space and helps prevent secondary contamination—ideal in Bertha’s humid subtropical climate.
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 Bertha, FL homes.
One Unit, Installed
$995
Installed
Regularly

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

The built-in UV lamp is part of the price—no upgrade needed.

Fitted under your sink and commissioned by professionals in Bertha.

We test your Bertha 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—perfect for multi-sink homes in Bertha.
Independent Testing
You do not 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 - a smart move for Bertha homes dealing with limestone-influenced groundwater and hard water.
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 Bertha water during the visit, especially important with hard, limestone-influenced groundwater, 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 Bertha is the water that gets purified.
Cleaner Water for Better Living in Bertha.
Installed by a Florida plumbing company that knows local water conditions—and stands behind the work.
Built with premium materials for reliable, long-term performance in humid subtropical Florida.
The built-in UV lamp is included in the price on every unit we install in Bertha.
We stand behind our products and the quality of service we provide in Bertha.
Join Bertha 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 Bertha.
Tankless purification as you draw—no storage tank, no waiting, great for humid Florida living.
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—ideal for Bertha homes dealing with limestone-influenced, hard groundwater and scale buildup. 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 Bertha
$995
Installed
Regularly