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

It works great.. very easy to set up... clean & clutter free.. Highly recommend this product. Water tastes great and water pressure is better than I expected..

I don't normally take time to do product reviews. This product has inspired me. I have had it installed for a little more than a month, and so far, it performs as described. The water is clear, clean and great! I even split the output line and ran it to my refrigerator. The almost clear ice and cold water from my dispenser is a great blessing and it gets used a lot. The installation is easy as promised. I seldom have DIY projects that I don't have to run to the hardware store one or more times. Everything that you need comes in the package and the instructions are sufficient for a reasonably handy person. The one real difficulty is mounting the provided faucet. Making the hole in your counter or sink is installation dependent. I already had a hole from a previous RO product. I had difficulty tightening the nut to secure the faucet. My mounting hole is positioned between the wall and the back of the kitchen sink. I would recommend a basin wrench if you have on available. The price of the replacement cartridges is a little high...about $140 for a 2 year period of operation. But, if the unit continues to perform, I would say that it is very much worth it. I particularly like the 1:1 efficiency of the RO. My previous unit was a terrible waste of water and made an annoying noise when it was back flushing itself. I will probably follow this review up with another when it comes time to change the first cartridge in a year.

The Waterdrop G2P600 is an excellent reverse osmosis system (RO). We previously had a big tank RO but after a gallon or two it would slow down until there was just a trickle from the faucet. Then we would have to wait for the tank to refill. Having a continuous flow RO is a huge plus. And it takes up less than half the space as our old RO & tank. I had some concerns about the noise of the pump but honestly we keep it under the sink and when the doors are closed it's barely noticeable. However that we had one minor problem. There is a pause when you turn the faucet on. That momentary pause did not play well with our refrigerator ice maker. It made some loud noises. So I highly recommend if you are going to connect this RO to the refrigerator you buy the tank as well. (Waterdrop PMT Small Water Pressure Tank.) And then bleed a lot of water through the fridge to remove any potential bubbles in the line. Now there's no momentary lapse and the ice maker is quiet once again. You can see just how small the tank is compared to the RO in the attached picture. It was a very easy install and made a huge difference. Here's my water measurements in Total Dissolved Solids (TDS) measured in parts per million using the Craft911 water tester: 249 tds from the hose 324 tds from the sink (from a water softener) 34 tds from our old RO 12 tds from the G2P600 RO That's quite an improvement. Some day I'll have our water tested just to see what's actually in there and what the G2P600 is removing from the source. So I highly recommend the G2P600 and tank. This is proving to be one of my best Amazon purchases.

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!

There is lots to like about this RO unit for under the kitchen sink beginning with its compact, thin size. It fits nicely and still provides lots of room for storage. The biggest plus is the ease of filter positioning for replacement. 2 easy to remove filters that take all of a nano-second to swap out when the time comes. The faucet set that comes with the unit is also vey nice. Small, sleek and easy to operate. My water pressure is very good so I have good flow for the dog's drinking water. The water filtration also appears to be on point. It is virtually tasteless and has no odor vs our tap water which heavily smells of chlorine. Another big plus. The 4-star vs 5-star rating is the need for an electrical outlet to operate the unit. Most are without that need. I hired an electrician to place a plug specifically for this operation which is overhead. That said, once turned on, it is very quiet and the display is very straightforward. I followed the instructions to let the water run a solid 30 minutes prior to usage and that was about it for start up. Once the filters are needing replacement the visual display will flash alerting the need to swap out filters. The price was very economical, the unit appears to do what it is intended. If it were without the electrical component, it would have been a 5-star. QUESTION: What are the replacement filter order numbers?? They do not make it clear how to order the correct filters and I would like to have them on hand.

Easy to install. Instructions are easy to follow. The faucet is nice and sturdy. Goes well with our stainless steal sink. We use it with a cistern system that we fill with tap water; water tastes great from the filter system. Filters are easy to change. I would recommend. I got a bit screwed on the price. Looks like the price dropped to $269 right after I purchased it for $299.

I've been using this for about 4 months and I have to say it is a LIFE SAVER! We live in super low humidity and I was using 3 humidifiers 24/7 and there was this fine white dust EVERYWHERE. It took me about 6 months to figure out what was going on. Obviously buying distilled water for 3 6-gallon humidifiers would be prohibitively expensive. I bought this unit for one of our sinks and a different unit for another sink. I have to say I really like this one a ton better. The other unit utilizes a pressure tank so you can only get a little over a gallon every 30 minutes or so. Not a big deal if you are only drinking, but THIS unit is powered by a pump and you can fill up a humidifier in no time. I keep waiting for the "change filter" lights to go on, but they haven't. I am wondering if the fact that we had power cut offs in the last 4 months has somehow re-set the filter? It's hard to believe it is still functional with the amount of water we've used, but then there is no white dust coming from the humidifiers so I'm assuming it is still chugging away. This is well worth the money. I had a plumber set it up just because I didn't want to mess with it myself, but I can see how it would be a straight forward install for a handy person. Just make sure you have a plug in nearby as the unit does require electricity. Definitely recommend and would buy again!

I replaced my old Brondell Circle RO system with this Waterdrop unit, and I couldn't be happier. - ​Installation: Incredible easy. It was almost plug-and-play. I was able to reuse my old faucet and drain assembly (the tubing size was compatible). The only new part I had to install was the provided inlet tubing. ​ - DIY Friendly: Even if you aren't handy, you can do this. Save your money—no plumber needed. ​ - Performance: Water tastes crisp and clean with no odors. I considered the 3-filter model, but this one is performing perfectly. ​ - Noise: It is dead silent when dispensing water. ​ Highly recommended for anyone looking to upgrade their under-sink setup. Don't forget to wrap the white tape around the water wall outlet to avoid any leaks.