Waterdrop G3P600 Tankless Reverse Osmosis Water Filter System, 600 GPD | NSF/ANSI 42 & 53 & 58 & 372 Certified, 8-Stage RO Water Filtration System Under-Sink, 2:1 Pure to Drain, Smart LED Faucet

The Waterdrop G3P600 Reverse Osmosis System has been a fantastic upgrade for our home. The water quality is excellent, and we immediately noticed the difference in taste compared to our regular tap water. It produces clean, fresh-tasting water that’s perfect for drinking, cooking, and making coffee. One of my favorite features is the tankless design. It saves valuable under-sink space while still providing plenty of filtered water when we need it. The system feels well-built, and the smart LED faucet is a great touch that makes it easy to use and monitor. Installation was straightforward, and the overall design is much more convenient than traditional bulky RO systems. I also appreciate the efficient water usage compared to older systems that waste a lot of water during filtration. The multi-stage filtration gives me confidence that we’re getting high-quality water every day. The Waterdrop G3P600 is a great combination of performance, convenience, and modern design. It has been a great addition to our kitchen and a worthwhile investment for cleaner, better-tasting water. Note: We did have a problem 11 months after we first ordered this but the manufacturer was excellent to work with and shipped us out a replacement and we've had no issues since.

After doing a lot of research on water filtration systems, I decided on the Waterdrop G3P600, and I couldn't be happier with my choice. Knowing it reduces things like PFAS while providing clean, great tasting water gives me real peace of mind every time I fill a glass. I also love the tankless design. It saves so much space under the sink compared to traditional reverse osmosis systems, and the sleek smart faucet with the LED filter indicator is a nice touch. The water flow is surprisingly fast, so I'm not standing there waiting to fill a glass or coffee pot. The water tastes fantastic. Coffee tastes better, ice cubes are crystal clear, and I find myself drinking more water simply because it tastes so clean. Installation was straightforward, and the entire system feels very well made. If you're on the fence because of the price, I look at it as an investment in my family's health. Between the water quality, space saving design, and overall performance, I think it's worth every penny. This is one of those purchases that you don't fully appreciate until you start using it every day. I would absolutely buy it again.

Update: After changing a filter recently, contacted Waterdrop Support because I had some strange readings. They responded super fast and helped me work through issues. It turns out I didn't flush the system properly after the filter change. For what it's worth, the TDS (total dissolved solids) reading on the Waterdrop are extremely accurate. The water quality is excellent. Our tap water is good, but the RO water is so much better. I thought the lack of minerals would make it taste "off" but that is not the case. It tastes like pure bottled water without the cost and waste. I bought my system a year ago to install in my remodeled kitchen. It fits perfectly under my sink and has worked perfectly through several scheduled filter changes. Customer service responds within a day and my questions are answered clearly. The filters are not cheap, but factoring in quality, convenience and overall cost, it's a bargain.

We live by the sea in an old community in an area with very high particulates in the water system. The water also smells like chlorine. We have always bought bottled water, but with the Pandemic, our grocery load started to become unmanageable as we cut down on the number of trips we made to the store. We started to drink the tap water and almost immediately decided it was time to try out a water filter. RESEARCH I did a lot of investigation, and by a long shot, the WaterDrop products represent the best designs on the market: - the forward-facing filters are as easy to replace as a refrigerator filter. - the tankless design means you don't lose much undersink space (Image1) - the tankless design also means there's no opportunity for bacteria to grow in the holding tank - the smart faucet (the led ring around the base) conveys the state of the filters - blue is good, yellow means you're due for a change and red means you should change a filter immediately - the WD-G3 display not only tells you the state of the water in Total Dissolved Solids (TDS), but also shows you the state of each of the filters (blue/yellow/red) so you know which one to order. - the brushed nickel finish matches our faucet and looks great (Image 1) - the 12 second time-to-fill an 8 oz glass is good Everything about this unit screams "quality". The instructions are simple and easy to follow. The 800 number is listed on the cover of the installation guide. Each part feels solid and well-made. INSTALLATION There is one challenge that most homeowners will probably face to using this unit -- it requires power under the sink. I had a socket under my sink that the garbage disposal was plugged into. I assumed (you can see where this is going!) that as is traditional, the upper socket was wired to the disposal switch and the lower was always hot. Unfortunately, living in an older home, this was not the case, so I had to replace the socket with a split/switched/always hot one. Our garbage disposal unit is huge, and our sink is in the corner of the kitches with one small door, so it needed to be removed to facilitate the install. Between the disposal deinstall/reinstall and and the rewiring job, installation took me all day. HOWEVER - The actual installation of the Waterdrop unit was approximately 40 minutes of this, so plan accordingly. I had one minor issue with the waste pipe connection, which is designed for 1.5" pipe (we have 2" pipes, but the pipe coming out of the garbage disposal was 1.5" with just enough space to connect the waste line). All of the lines are thoughtfully unique - there are two white lines, but of different sizes (one goes from the water source, one goes to the spigot) and the waste water is red, so you can't get confused. The connections are all pretty easy, although you should pay attention to the "Push the locking ring" instructions so you don't accidentally break one of the shipping plugs when removing them. The locking ring collars are a bit fussy and require a needle nose pliers to install. Other than my own personal challenges of a small under-sink space and the electrical issue, the installation was a breeze. WATER QUALITY So, the big question -- does it work? The answer is YES! See the second the image. I used an independent water meter to measure the TDS. On a sample from a bathroom spigot I got 99. This is pretty typical, we run around 90 to 120. Measuring the water from the filtering system shows 12. The reading on the front of the unit showed in the mid 70's during startup, but now shows 5. Given the somewhat wonky nature of water testing, I'm good with these numbers even though they differ slightly. The WD-G3 reduced the TDS in our water by an order of magnitude. This is exactly what you would expect from an RO system that should filter out about 90% of all TDS. This translates to a better tasting, safer glass of water, which it produces in about 12 seconds (8 oz). Not only does the water taste better, our coffee and anything else we used water in also tastes better. While the difference is not as evident at room temperature, you can really tell the difference in a side-to-side test of chilled water. We tested tap vs filtered vs Poland Spring bottled. At room temperature, they are all pretty much the same, with Poland Spring being slightly saltier. We tested the TDS on Poland Spring and it was at 41, confirming that there's some mineralization going on there. In chilled form, the filtered tasted the best, with Poland spring second and the unfiltered third. (And yes, to answer your question, my wife is now laughing at me because of my obsession with metrics and blind taste tests) FILTER REPLACEMENT/CUSTOMER SERVICE As some other reviewers have notes, the "CF" filter seems to be in very short supply and cannot even be purchased on the Waterdrop site. I contacted Waterdrop customer service who responded (on a weekend!) that the filters will be back in stock at the end of this month. SUMMARY Pros: - Does what it says, reduces TDS by a factor of 9-10 - Produces clear, clean water - Interface is intelligent and intuitive - Tankless design saves space and eliminates post-filter bacteria issues - Looks great - Responsive customer service Cons: - Requires un-switched power under the sink - The CF Filter replacement is currently unavailable. Recommendation: The CF shortage is worrying, hopefully Waterdrop will be able to solve this issue. It's a Pandemic so I'm willing to give them some leeway in supply chain challenges. I decided to take the plunge anyway and given the alternatives, this is still the best unit on the market.

This is my long-term review of the Waterdrop reverse osmosis system after two years of daily use. I purchased this unit in July 2024, and I recently received the notification to replace the RO main filters, making this a good time to share my overall experience. Before buying this system, I used a FizzyLife reverse osmosis unit for almost 2 years. While it generally worked well, I was never completely satisfied with the filter replacement reminders. The display notifications didn't always match the replacement schedule recommended in the manual, which made it difficult to know when the filters actually needed changing. One of the reasons I switched to Waterdrop was its certifications and reputation, which gave me greater confidence in the system. I purchased the Waterdrop system during a sale, which made the higher price easier to justify. When it arrived, I was surprised by its size, it is big but it still fit comfortably under my kitchen sink. As a DIY enthusiast, I installed the system myself. The installation instructions were clear, and the online videos were very helpful. Anyone with basic plumbing and DIY experience should be able to complete the installation. The only challenging part was installing the dedicated faucet. Unlike many reverse osmosis systems that use a smaller mounting hole, this faucet required a larger opening. Since my sink is made of thick stainless steel, enlarging the hole took the most time and effort. Aside from that, installation was straightforward. Over the past two years, the system has performed very well. The filter replacement reminders have been accurate and have matched the recommended replacement schedule, which was one of the biggest improvements over my previous system. The unit operates quietly, and I even uploaded a video so buyers can hear the operating noise for themselves. It is noticeable during operation but never loud enough to be bothersome. Performance has been excellent. Water flow is fast enough to fill glasses and pitchers without long waits, and the water tastes clean, fresh, and crisp. This has become our primary source of drinking water. We use it for cooking, making coffee and tea, preparing baby formula, and providing drinking water for our family. I have been very satisfied with the quality of the filtered water. One feature I have mixed feelings about is the automatic flushing function. While I appreciate that it helps maintain the membrane and overall system performance, it will activate when only a small amount of water has been used, which may surprise some users. I understand why the feature exists, but it can be a little inconvenient at times as it will use water to flash. My biggest criticism is the long-term maintenance cost. The replacement filters are noticeably more expensive than many competing reverse osmosis systems. When choosing an RO system, it's important to consider not only the purchase price but also the ongoing cost of replacement filters. Over several years, those costs can add up significantly. Overall, I have been very happy with the performance, reliability, and water quality of this Waterdrop system. However, if I were purchasing another reverse osmosis system today, I would pay much closer attention to the long-term filter costs and compare them with competing brands. While this is an excellent product that has served my family well, the higher maintenance cost makes it harder to absolutely recommend without reservation. If you can purchase the unit on sale and are comfortable with the replacement filter prices, I think you'll be very satisfied with its performance.

I finally got tired of going down to the local water station and filling up 5 gallon water jugs and broke down and bought a water filtration system for under the cabinet. I will admit, I had a little trepidation because I don’t generally like dealing with plumbing, but the installation for this system was extremely easy, and the instructions are very accurate and easy to follow. This WATERDROP unit fit very nicely under our kitchen sink. I even added a small water pressure tank as well as a mineralization filter and it didn’t take up half the space under our sink. Some things to consider when installing the system on your own or any system for that matter. You’ll need to know where your main water shut off is or at least have the ability to shut the cold water off under your sink because you will be tying into the cold water line under your sink. You’ll need an electrical outlet to plug the unit into, and you should be able to use the same one your dishwasher uses providing you have a dishwasher or garbage disposal. And a basic knowledge of plumbing will help as well but not necessary because the instructions are so easy to follow. All in all, it took me about three hours to get this installed mainly because I had to go down to the store and buy another fitting to hook up the refrigerator. We’ve had ours installed for about a month and a half to two months now and I enjoy being able to get freshwater right next to the tap at the sink. The water taste great and the filtering system seems to work very well on this unit. One thing to keep in mind, the water does not flow as fast as a regular sink faucet flows so be prepared that it takes a little bit longer to fill a glass of water up or a pitcher for example. If you think this will be a problem for you do some research and get a unit that has a faster water output. This particular unit has the digital display on the front, which will tell you when your filters need to be replaced. The manual says the filters have to be replaced every 6 to 12 months depending on the filter, but that could be different in your area based on how hard or soft your water is. As you can see from the picture below, the unit itself fits nicely underneath the sink, but all of the 1/4 inch tubing does look messy and I still need to get in there and try to make it a little neater. The tubing is somewhat rigid, so it doesn’t just lay on the bottom of your cabinet and kind of goes where it wants to go, so you may have to come up with a way to hook it to the wall or gently zip tie them together to make it a little neater. Also, it may seem like all of those plastic connectors wouldn’t work well or might fail, but honestly, once you push the tubing into those connectors, I’ve had no leaks whatsoever. Everything is nice and tight and secure. Plus it has the little blue locking rings that you put around the end of each connector to hold the tubing inside them so don’t be worried about that. All in all this is an excellent purchase and I’m really glad we got it. Having clean tasting water right from the faucet or the refrigerator is so much better than filling up ten 5 gallon water jugs twice a month. Don’t let this project seem overwhelming to you, with a few tools and the ability to read the instructions you’ll have it installed in no time.

Just installed it. Fairly easy to install took about 1 hr or so including moving all the stuff out from under the sink. You will need a drill with a 1/4" bit, and some wrenches. The water tastes great and I notice the difference in our coffee as well. I installed on a 1.5" pre-existing hole that was used for a soap dispenser. The fit is "good enough." It's fairly quiet under the sink no more loud than a fridge or quieter dishwasher. It fills up things very fast, much faster than your fridge would. The parts and system seem high quality and well made. I'm glad to know my family will be drinking very pure water.

Quality: Excellent! What's not to love? I'm drinking the purest water modern filtration has to offer, was able to set it up myself, and still have room to spare under the sink. Customer Service: Great! Unfortunately, our initial unit was leaking internally after installation. Thankfully the unit's error code system (and the puddling under the machine) made it pretty clear that was the case. The back-and-forth with customer service was a bit tedious as it was all handled over email and I had to provide information/troubleshooting steps multiple times despite already having provided/done it. Eventually I was sent a new unit that I was able to plug right into my initial installation and it worked flawlessly. Thank you to Krystal from customer service for helping me out and getting me the new unit! Installation/Instructions: Good, not great. There were a few things missing I felt would have improved the ease of installation: 1. My biggest gripe here is that in 2026 Waterdrop is still recommending a drain saddle to be installed for waste water. Modern homes typically have a disposal and dishwasher draining into the disposal, leaving very little vertical piping to attach a drain saddle to. Not to mention drilling a hole into your pipes for waste water is generally frowned upon in the plumbing world. If you have a disposal/dishwasher setup (like shown in my picture), do yourself a favor and skip the drain saddle in favor of a "Watts Premier Universal Dishwasher / Drain Line to Garbage Disposal Adapter". You will also need to purchase a quick connector 1/4inch to 3/8inch (such as "E-outstanding Quick Straight Connector 5PCS 1/4inch to 3/8inch") as the Waterdrop drain tubing is smaller at 1/4inch than the Watts adapter input at 3/8inch. You should have enough extra 3/8inch tubing (from the provided Waterdrop input/output water lines), but you can also purchase more of that if desired. Really all of this should be provided by and instructed by Waterdrop, but it's not. 2. There are no clear instructions on how to install a remineralization filter. If you want to improve the taste of your highly-filtered water and put some of the good stuff back into the water before reaching your cup, a remineralization filter allows you to do that. It took me a bit to figure out it needs to be purchased separately and installed between the filtered water output and the UV Treatment Device. Knowing this up front would have saved some time so that I could measure and cut my output tubing accordingly. 3. This is very minor, but the written instructions do not tell you to use the provided Teflon tape when installing the feed water adapter. It should work fine with/without it, but I believe best practice is to use it. Overall: Excellent product with great customer service, would definitely purchase from this company again. Would appreciate some updates to installation instructions and provided material to ensure best practices are adhered to. Pro Tips: 1. Do yourself a favor and purchase a silicone under-sink mat. The RO system creates a LOT of new potential leak/failure points in addition to the ones you already have. Better safe than sorry! 2. This unit will go on sale for $699 - wait for the price drop!

Es un equipo buenísimo Tiene un precio elevado pero merece mucho la pega su precio. Estoy encantado con el. No hace apenas ruido, ocupa poco espacio, fácil instalar y echa bastante agua depurada. Lo recomiendo 100x100

Ottima qualità costruttiva del prodotto, si installa in autonomia in circa un' oretta. Dopo 3 settimane di utilizzo non ho riscontrato alcun problema Finalmente addio alle bottiglie di plastica!

We were torn between buying a cheaper RO system with a tank, and this on demand model. I'm so glad we opted for the Waterdrop. The install was as easy as the instructions/instructional video, except we had to modify our counter a bit. When they installed our marble countertop, they put a 3/4" layer of plywood underneath where the faucets are, which meant the Waterdrop faucet wouldn't fit. We had to drill out some of the wood, but once that was done, it went smoothly. The water tastes so good, much better than other RO systems we've used. I read that sometimes the filters are hard to find as they're often on backorder, but I ordered some from Walmart online to ensure I have a year's worth of filters on hand. Very happy with this RO system!

I recently installed the Waterdrop G3P800 with the WD-MNR35 remineralization filter, and I couldn’t be happier with the results. This system exceeded my expectations in every way. Installation: Straightforward and well-documented. I opted not to use the provided smart faucet and instead ran the remineralized, UV-treated line directly to my fridge (LG SRFB27S3). I did need to purchase an extra press-fit-to-threaded adapter and a 10' length of 1/4" food-grade water line to make the connection, but that gave me the flexibility I needed. The included hose cutter was a nice bonus — it made clean, accurate cuts that ensured leak-free connections. Performance: The water and ice are completely odorless and tasteless, just pure and fresh — exactly what I wanted. My fridge's water dispenser now fills a 1.14 L bottle in no time, thanks to noticeably improved water pressure. The unit itself is surprisingly quiet, and because of its small footprint, I didn’t even have to move the garbage can under my sink — which I had expected to. Final Thoughts: The build quality, ease of install, compact design, and excellent performance make this a solid 5-star product. Being able to run the filtered, remineralized water to my fridge without any taste or smell is a huge win. Highly recommended for anyone looking to improve their drinking water at the source and through their refrigerator.

Dopo un'attenta ricerca tra i depuratori d'acqua disponibili sul mercato, ho deciso di puntare sul modello Waterdrop WD-G3P800, il fiore all'occhiello della gamma. La mia esperienza con questo prodotto si è rivelata estremamente positiva sotto vari aspetti. Packaging: Il packaging del prodotto ha mostrato un'attenzione ai dettagli ineccepibile. Ogni componente era accuratamente organizzato e protetto, sottolineando l'alta considerazione dell'azienda per la qualità e la presentazione. Montaggio: L'installazione del depuratore è stata agevole. Anche se il processo di foratura del lavello per il rubinetto aggiuntivo potrebbe sembrare complesso, l'adesivo preforaro fornito rende l'operazione precisa e priva di errori. Consiglio l'uso di frese a cono, prestando attenzione alle temperature. Funzionalità: La presenza della lampada UV è un vero punto di forza, garantendo una sanificazione dell'acqua davvero elevata. Sebbene una staffa per il fissaggio della lampada avrebbe avuto valore aggiunto, ho risolto facilmente con una semplice fascetta. Inoltre, il rubinetto digitale che mostra il valore TDS e lo stato dei filtri è una funzionalità davvero innovativa e apprezzata. Qualità dell'acqua: Con un TDS max di soli 007 (considerando un residuo fisso basso in ingresso), l'acqua è incredibilmente pura. L'introduzione di un filtro rimineralizzante della stessa marca ha esaltato ulteriormente la qualità, regalandoci un'acqua dal sapore eccezionale. Bonus Acqua Potabile: La possibilità di ricevere una fattura per usufruire del bonus acqua potabile è stato un altro punto a favore. Il Waterdrop WD-G3P800 si è dimostrato un investimento eccellente. Benché l'azienda sia Cinese, la qualità dei materiali e delle funzionalità è di primo livello. Non posso che consigliare questo prodotto e sono convinto che Waterdrop diventerà un nome di riferimento nel settore in tempi brevi. Sono pienamente soddisfatto del mio acquisto.