Waterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System, Under Sink Water Filtration System, 400 GPD, 1:1 Pure to Drain, Reduces TDS, FCC Listed, USA Tech, WD-G2-W

I owned a successful marine aquarium service company for 15+ years and have been a reef tank hobbiest for more than 30 years. I know a lot about water quality, both for my reef tank water changes, and for my daily drinking water. I manufacture my aquarium water using RODI technology (reverse osmosis deionization), the only practical method for producing lab grade water with 0.0 TDS (Total Dissolved Solids). This takes constant digital testing of both my input city water and the output water after my filter. I am sure I have bored you to sleep but please WAKE Up. (In case you wonder why I don't simply drink the water from my RODI filter, one would need to add minerals back to it first before it would be safe to consume on any type of regular basis.) Now you know why I wanted a separate, dedicated Reverse Osmosis drinking water system for my family. After I Installed the Waterdrop Tankless Reverse Osmosis unit, (a very straight forward task that honestly should take the average person about 1/3rd the time of an old technology RO filter with pressurized water tank for drinking water), I was shocked to test the output water at the included metal faucet at a low TDS of just 3 PPM. My city water entering the Tankless system is currently at 140ppm. The fact that the Waterdrop system improves the water quality to only 3ppm without the use of dionization is AMAZING. Also, I turn on the filter and immediately test the water, thus there is no wait time required to let the water run before it is ready to drink. I have had my Tankless system running for months and it is rock solid at 3ppm. It is clean, delicious drinking water from an attractive, compact unit. I could not be more pleased.I also want to speak to the customer service I experienced. Unfortunately, after about 2 months of use, the 400GPD system would not turn on. I was really surprised when this occurred and emailed Waterdrop support without delay. Although I was well past the Amazon 30 day return period, the representative clearly cared about customer satisfaction and shipped me out a new, complete upgraded 600 GPD unit and a return postage paid shipping label for my original 400 GPD unit. He also sent me a free extra filter cartridge for the inconvenience I had experienced. I have had this replacement unit running for months without any issues. I would give Waterdrop 10 stars if it was allowed. Thanks for reading my lengthy, but honest review. Please buy a Waterdrop Tankless Reverse Osmosis filter, you will not be sorry you did!

The water tastes great and has reduced our spending on bottled water. It's a little louder than I expected, but not a deal breaker by any means. Installation was easy. Water flow is good, but patience is required if you want to fill a pot. On the flip side, you can fill a pot! There's no downtime while it processes.

Update - at two year mark now and unit has been reliable and leak free. I measured a ~20% flow rate recovery after changing the membrane and filter so I did confirm that the unit was slowing down a noticeable amount. Continued to be pleased with investment and overall system performance. Filter changes are timely before taste deteriorates - still, you’ll notice a taste improvement after each filter swap.So far so good! After the specific hookups required for the existing connections (faucet and ice maker), the setup of the Waterdrop system was a breeze. The filter automatically tells you when the flushing is done so no guessing if you have cleared the system out or not.Filling is a little different for previous experience on a tank system. There’s a short pause while the pump kicks on and the flow is slower. Not really a problem if you’re just getting a glass of water, but filling the coffee pot does take longer (I can set up the filter and grounds while filling the pot).Based on other reviews, I have been closely monitoring for leaks. Only real issue has been the connection points to the existing system, and that is more on me than Waterdrop. But just in case, I have ordered a under sink mat to prevent wood damage from small leaks.Time will tell how long these filter and RO cartridges last, but the simple maintenance was a selling point for me.Water quality is great and as expected from a RO system. The small footprint under the sink is opening up more space than I was expecting.

I’ve had the Waterdrop G2 Reverse Osmosis System for a few days now, and it has truly transformed the quality of water in my home. If you're looking for a top-tier water filtration system, this is it!Pros:1. Crystal Clear Water Quality2. Tankless Design is a Game Changer3. Fast Flow Rate4. Easy Installation5. Eco-Friendly and Cost-Effective6. Quiet OperationCons:1. The initial 30-minutes you need to let the water run through the system but not the end of the world.Overall, the Waterdrop G2 is an outstanding investment for anyone who values clean, fresh water without the hassle of bulky tanks. It combines efficiency, convenience, and top-notch filtration in a compact system. Highly recommended!