Waterdrop G2P600 Reverse Osmosis System, 600 GPD Tankless RO Water Filter System, Under Sink RO System, 7 Stage Filtration, 2:1 Pure to Drain, Reduce TDS, FCC Listed, USA Tech

Love my RO unit! Great tasting water and ice. I hooked it up directly to my refrigerator without the additional pressure tank and it works great. It's a little slow, but since I didn't want to drill my granite cabinet top for the tap, I'm not sure if the tap would produce a great volume quicker than my refrigerator water tap. Installation was a breeze, instructions clear, and have had no issues after 3 months.

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.

I purchased this filtration system because my water is extremely hard; so hard that even with a whole house filter attached to my main line, I still get some pretty significant mineral buildup in all my faucets. This system does an outstanding job of providing me some crystal clear, great tasting drinking water. It's super easy to install and the perfect size for a single guy like me. After a little over a year, I've had to replace the filter only once. The one issue that isn't even that big of a deal is that it can be kinda loud while dispensing water, although not nearly loud enough to be a nuisance.

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.