SimPureT1-400UV Tankless Reverse Osmosis System with UV, NSF/ANSI 58 Certified, Under Sink RO Water Filter System 400 GPD, 8 Stage Filtration Near 0 TDS, Built-in Pump, BPA Free, 1.5:1 Pure to Drain

I couldn’t be happier with the SimPure T1-400UV Tankless RO System! From start to finish, this has been an incredible upgrade for our home water setup.Installation was a breeze — the instructions were crystal clear, and all parts were well-organized and labeled. I’m not a plumber by any means, but I had it up and running in under an hour. The compact, tankless design is a space-saver and looks sleek under the sink.Once installed, I was immediately impressed by the strong and consistent water pressure. Unlike other RO systems I’ve tried in the past, this one doesn’t slow to a trickle — it delivers a full stream of purified water quickly, which is a game-changer for cooking and filling water bottles.TDS tested at 0! Yes, ZERO. The water tastes absolutely pristine — better than any bottled water we’ve had. You can literally taste the purity. Plus, the added UV sterilization gives me total peace of mind, especially with a family that drinks water constantly.If you're on the fence, don’t be. The SimPure T1-400UV is worth every penny. High performance, simple setup, and flawless results. Highly recommend!

WHY is it so freakishly difficult to find an Amazon review to edit? Most of the help is either out of date or misses important steps. Whoever planned this aspect in Amazon seems to have had a serious case of dsylexia or some kind of obfuscation disease when trying to put related items together.Update: Heard back from the company. While not yet resolved, it is good enough to restore the rating to 5 stars. For reasons unknown, the unit started to work properly again when I started on the process of uninstalling it for possible return (it is still within the return window).======(updated back to 5 stars, but I prefer not to delete content, but let it stand)Update: Dropping to one star. The unit developed a problem. SimPure have not responded at all to requests for assistance in addressing or diagnosing the issue. Unit is unusable at present.=============We bought the unit that provides pure clean water with no minerals added back. In my testing of it, it delivered on that. The TDS reading was at the lowest limit that my measuring unit is capable of.Installing anything in a kitchen cabinet isn't much fun. This isn't particular to this unit in that regard. It may take quite a while to get it all done, although it is not intrisically difficult.The manual suggests placing the unit within the sink structure. I placed it on a corner of our kitchen island where it is easily accessible from multiple aspects. This turned out to be a good choice for another reason. Water delivery is slow. A cup or kettle can be put on the counter surface, and doesn't need to be held while it is filling.The unit makes noise. To prevent the cabinet from acting as a sounding board, I put some padding underneath the unit and between the fixture to the wall. This results in a level of noise that is useful to let you know it is running. Without the padding, it is rather noisy.As shown, the unit doesn't have a cover for the top. I would have preferred something to have been included that protected the top.The threaded part of the faucet was only just long enough to go through the tile and wooden base. I did not install the upper trim washer, only the rubber one. It looks fine that way.To avoid cracking the tile, a tiny, vertical, pilot hole was drilled between the 4 corners of the tiles. Then a conical shaped abrasive bit was used to wear away the enamel surfaces of the 4 tiles to about 1/2" diameter. Finished off with a combination of masonary and wood bits being careful to ensure it was vertical. No cracks, unit stands straight, all looks good.It needs an electrical supply. You could hook it up to the existing dishwasher outlet with a simple adapter, but probably better with its own outlet.Water without minerals does not have the sweet taste of water with minerals. Totally pure water tastes fine to me. As we use water primarily for tea, coffee, and cooking, it would not have been an issue anyway. We can always provide bottles of water for those that prefer the mineral taste.All in all, it turned out well, and is much more convenient and better performing than the previous filtration. No complaints or problems reported by any other of the household. They adapted to it straight away.

I ordered the SimPure ROULP-3012-400-T1, to install as our main filtration unit in the kitchen. With its capability to remove over 99.99% of more than 1,000 contaminants—including harmful viruses, bacteria, microplastics, and chemicals like PFOA/PFOS—this system offers peace of mind for anyone concerned about water quality. The comprehensive removal of heavy metals such as lead and arsenic makes it a particularly compelling choice for households in areas with questionable water sources.One feature that impressed me is the alkaline remineralization capability. Not only does this system effectively purify water, but it also enhances its quality by restoring essential minerals such as calcium, magnesium, and potassium. The result is an alkaline, mineral-rich beverage that tastes refreshing and contributes to better overall health. Unlike some ionizers, this system delivers a higher pH with no chemicals or heavy metals, making it a safer option in my opinion.The inclusion of a UV sterilizer is another highlight of the SimPure R/O system. This automatic component eliminates bacteria and other microorganisms, ensuring that the purified water remains uncontaminated. Moreover, the tankless design is a game-changer—it not only maximizes space under your sink but also provides fresh water on demand, further reducing the risk of any secondary contamination.With a production capacity of up to 400 gallons per day and an impressive pure-to-drain ratio of 1.5:1, this system is undoubtedly more eco-friendly than traditional reverse osmosis systems. The efficiency in minimizing waste while providing high-quality purified water is great. Installation is fairly simple and the instructions are detailed, making installation time right under 30 minutes. This system is so much easier with the included pump, eliminating the need of a bulky tank.While the system enhances the pH level of filtered water, the Total Dissolved Solids (TDS) won't reach 0 ppm. If you are looking for lower TDS values, look at the SimPure's T1-400UV option.The SimPure ROULP-3012-400-T1's ability to provide not just purified water but also essential minerals makes it a worthy investment for anyone looking to improve their water quality and overall health. I highly recommend it!