See the purity, trust the technology. A tankless under-sink system that delivers ultra-clean, refreshing water on demand—ideal for St Augustine South families dealing with hard water and coastal conditions.
The System (Perfect for Coastal Florida)
The whole system fits under your sink and connects with quick-connect fittings. Four quick-change twist cartridges provide the filtration stages, with a UV chamber inline. With no bulky storage tank, you get purified water on demand—ideal for St Augustine South’s humid, coastal lifestyle.
The first cartridge catches rust, dirt, sand, and large particles—helpful for hard-water homes in St. Johns County.
Carbon block media that reduces chlorine, odors, colors, and chemicals before the membrane—great for St Augustine South tap water.
The heart of the system—rejects dissolved solids and heavy metals, sending the concentrate to the drain (helpful with hard water scale).
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—great after RO treatment.
Filtration Stages
Each stage handles what the one before it leaves behind. UV is the fourth step in the sequence, and its not filtration at allits there to address what filters cant catch.
Removes rust, dirt, sand, and large particles—great for hard water in St. Augustine South.
Reduces chlorine, odors, colors, and chemicals.
Removes up to 99% of dissolved solids, heavy metals, and more—helping cut down on hard-water minerals.
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 filtration stages; step 4 is the built-in UV lamp for disinfection. UV is included in the price on every system we install in St Augustine South.
Pricing
The systems are identicalthe difference is how many you have installed on the same visit. Every unit includes UV sterilization and professional installation in St Augustine South.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install, and the right fit for a kitchen sink in most St Augustine South homes.
2 UnitsInstalled
A lower price per unit when you install two systems in St. Augustine South.
Great for a kitchen and wet bar, a second kitchen, or a guest suite—ideal for St. Augustine South homes.
3 or MoreInstalled
Our lowest per-unit price
Ideal for larger St. Johns 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 the property with you in St. Augustine South 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
The T1-400 series tankless under-sink reverse osmosis system for St Augustine South.
Typically 95% and up to 99.99% reduction—bringing 200–500 PPM tap water down near 0 PPM, or below 25 PPM in many St. Johns County homes.
The UV lamp operates automatically based on water flow pressure and can be adjusted.
Keeps water fresh, saves under-sink space, and helps prevent secondary contamination—important in our hot, humid Florida 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 headed to St. Johns County landfills.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts—ready for St. Augustine South installs.

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

Fits neatly under your sink and is professionally commissioned in St. Augustine South.

We test your water before and after—so you can see the difference in your St. Augustine South home.

No surprises for St Augustine South. One low price includes everything.

Lower per-unit pricing when we install two or more in St Augustine South.
Independent Testing
You dont 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.
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 St Augustine South.
Perfect For
It installs at the point of use, so the water you drink and cook with in St. Augustine South is the water that gets purified.
Cleaner Water. Better Living. In St. Augustine South.
Installed by a Florida plumbing company that’s done this for years—and stands behind the work in St. Augustine South.
Built with premium materials for reliable, long-term performance in coastal salt air.
The built-in UV lamp is included in the price on every unit we install in St. Johns County.
We stand behind our products and the quality of our service in St. Augustine South.
Join homeowners in St. Augustine South and around St. Johns County who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in St. Augustine South.
Tankless purification as you draw—no storage tank and no waiting, even on busy St. Augustine South mornings.
Built-in UV helps eliminate bacteria, viruses, and microorganisms a filter can’t catch—great for humid Florida living.
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 St. Augustine South homes dealing with hard water and coastal conditions. 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
$995
Installed
Regularly