Waterdrop Reverse Osmosis System G3P600, NSF/ANSI 58 & 372 Certified, Tankless Under Sink RO System, RO Water Filter System, TDS Reduction, 600 GPD, Smart LED Faucet

I was skeptical as there were no systems with all 5 star reviews (there rarely is). But this system was super easy to install and came with everything required. All you need is an outlet under your sink. Everything works as expected and our water TDS reads 2-3 consistantly. I also have 2 water testers and both had the exact same reading for TDS. I am amazed. The taste of the water is definitely something you can realize compared to straight tap water. I only wish the remineralization add-on filter could be in the unit. Maybe in replace of one of the carbon filters. But it is what it is. I order the small water pressure tank and plan to run a line to my fridge ice maker and water dispenser.The noise is not something most people will have an issue with. Its barely noticable and unlike other reviews, I can definitely not hear it run from outside the kitchen. Overall, I can say that I'm inpressed and I couldn't imagine anyone being disappointed with this unit. That is why I wanted to take the time to give this product a review. I'm glad I did my research and selected this unit. I hope it will work this good for years to come. If something changes I will update this review.

Prior to purchasing the Waterdrop system I had a tank-based 4 stage RO system from Costco. The reason I decided to replace my old system was because (1) I had no clue if it was actually working, (2) the tank took up a lot of space under my sink and could potentially be home to mold/bacterial growth, and (3) it was a pain to change the filters. After receiving and installing my new Waterdrop system I’m happy to say those issues are a thing of the past.First off, I wouldn’t necessarily call the installation easy unless you’re comfortable making permanent changes to your sinks plumbing. Fortunately I was able to just re-use the same drain saddle from my previous RO system so that saved me quite a bit of work and time. Aside from drilling for the drain the rest of the install is very easy. I decided to buy the UV sterilizer and remineralization filter separately which was much cheaper than buying the G3P800 which includes those two. On that note: I highly recommend looking at the NuAqua remineralization filter and UV sterilizer over the WaterDrop. They function similar to the WaterDrop however the NuAqua UV is bigger allowing the water to be exposed to the UV light 3-4 x’s longer compared to the Waterdrop. Also, Waterdrop does not provide any details as to what substances/media they use in their remineralization filter whereas NuAqua does. This is problematic since Waterdrops remineralization also contains Strontium which in concentrated amounts is known to be harmful to bone growth. Lastly, NuAquas remineralization filter includes a twist-on bracket which allows you to easily change it out, whereas the WaterDrop filter is connected directly in-line with no built-in shut-off.Now back to the WaterDrop system, the reason I ultimately went with it vs the comparable NuAqua 800GDP system is because of the built-in TDS meter and filter status alerts on the faucet. As good as the competitive offerings from NuAqua are, the fact that you have to test the TDS with a separate device and remember to check the filter status (under-sink) every now and then is just too much of an hassle. It’s similar to how inconvenient checking the air in your tires was before tire pressure monitor sensors were made. With the WaterDrop everything you need to know is shown to you every time you turn on the faucet. Lastly, some people have mentioned the WaterDrop system being loud due to the automatic flushing every so often. This part is true, the system does automatic flush regulary but I don’t hear it unless I happen to be standing over my sink when it happens. Truthfully I’m glad it does that because I believe it extends the life of the filters although why it’s necessary to do it so often is something I wish WaterDrop would explain. Otherwise I’m very happy with this purchase and believe it is one of the best under-sink RO systems on the market, but will likely switch out the UV and remineralization to the NuAqua parts.

I purchased the G3P600 the mini pressure tank for connecting the RO to my refrigerator water dispenser and Ice maker in Dec. 2023. The instructions were easy to follow and installation was a breeze. Love the compact size of the G3P600 even with the small pressure tank under the sink we still have plenty of room. The only minor complaint is the pump is little noisy when it cycles on. The taste of the water is so worth the minor noise. After several months I noticed when getting water from the dispenser on the refrigerator the RO. pump would go on and off and was louder than usual and there was no issue with the smart faucet and no code showing. So contacted Waterdrop customer service and described the issue and they determined that the mini pressure tank was most likely the issue and sent a replacement in couple of days. Installed the new tank in 10 min. and the system is working great again. Harper in there customer service was great to work with and has followed up to make sure everything is working properly.