See the purity, trust the technology. A tankless under-sink system delivering ultra-pure, clean, refreshing water on demand for your Douglas City home.
The System for Douglas City Homes
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 your Douglas City water is purified on demand rather than sitting and waiting.
The first cartridge—catching rust, dirt, sand, and large particles before anything downstream sees them in your Douglas City home.
Carbon block media that takes out chlorine, odors, colors and chemicals ahead of the membrane—great for Douglas City tap water.
The heart of the system—rejecting dissolved solids and heavy metals, and sending the concentrate to the drain for cleaner Douglas City water.
The final cartridge polishes the water and adds beneficial minerals back for a balanced pH—perfect for Douglas City kitchens.
Filtration Stages
Each stage handles something the one before it left behind. 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 common in Douglas City water lines.
Removes chlorine, odors, colors and chemicals from Douglas City tap water.
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 for Douglas City families.
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 (disinfection, not filtration)—included in the price on every Douglas City installation.
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 Douglas City.
1 UnitInstalled
Regularly $2,000 - you save $1,005
The standard install—an easy fit for a kitchen sink in most Douglas City homes.
2 UnitsInstalled
A lower price per unit on a two-system install
Great for a Douglas City kitchen plus a wet bar, second kitchen, or a guest suite.
3 or MoreInstalled
Our lowest per-unit price in Douglas City
For larger Douglas City homes, multi-unit properties, and light commercial spaces.
All prices are installed in Douglas City and include UV sterilization, with no hidden fees. Not sure how many you need? We’ll walk the 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 Douglas City
The T1-400 series tankless under-sink reverse osmosis system for Douglas City, FL.
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 Douglas City water fresh, saves under-sink space, and prevents secondary contamination.
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 for your Douglas City home.
One Unit, Installed
$995
Installed
Regularly

Unit, all four cartridges, faucet, fittings & all parts.

The built-in UV lamp is part of the price, not an upgrade—even for Douglas City installs.

Fitted under your sink and commissioned by Douglas City water pros.

In Douglas City, we test your 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 Douglas City.
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.
Testing covers removal of over 99.99% of 1,000+ contaminants, including total dissolved solids like fluoride, nitrates and nitrites; PFAS (PFOA/PFOS); heavy metals like lead and arsenic; and chloride—so Douglas City families can drink with confidence.
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 your Douglas City visit so you know exactly what you’re starting from.
Perfect For
It goes in at the point of use, so the water you actually drink and cook with in Douglas City is the water that gets purified.
Cleaner Water. Better Living. In Douglas City.
Installed by a Florida plumbing company that’s been doing this a long time—and stands behind the work for Douglas City customers.
Built with premium materials for reliable, long-term performance in Douglas City, FL.
The built-in UV lamp is included in the price on every unit we install in Douglas City.
We stand behind our products and the quality of service we deliver in Douglas City.
Join homeowners across Douglas City and South Florida who choose Mr. Pure Water.
Product Assurances
Better-tasting, odor-free water for drinking, cooking, and everyday use in Douglas City.
The tankless design purifies as you draw, so Douglas City homes get fresh water with no storage tank and no waiting.
The built-in lamp helps eliminate bacteria, viruses, and microorganisms a filter can’t catch—extra peace of mind in Douglas City.
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—perfect for Douglas City kitchens. 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 Douglas City
$995
Installed
Regularly