Waterdrop D6 Reverse Osmosis Water Filter, 600 GPD Under Sink Reverse Osmosis System, Reduce PFAS, 2:1 Pure to Drain, Tankless RO Water Filter System, Smart LED Faucet, Easy Installation

Easy to install and the water now tastes great. Reduces TDS to 3ppm. Great to have digital indication of water quality and status of filter for easy determination of when to change out filter element.

We got this system because my town is currently upgrading its 130y/o pipes and since they started the project, we taste a significant increase in chlorine and other disinfectant chemicals. Also several of my plants began to die as a result of watering them with our tap water. My husband and I are only moderately handy and we installed this system ourselves in 1.5 hours. Super easy install, but I strongly recommend watching a YouTube install video to familiarize yourself first. You'll need a power outlet under your sink, but this system should not interfere with your dishwasher. If you have a garbage disposal on a wall switch, that may create an electrical dilemma for you (we didn't have that issue tho). You'll need a drill with a bit to make a small hole in your drain pipe, and maybe on your countertop if you don't already have a hole for the additional faucet. If you're not about that DIY drill life, then I recommend you get a professional to do install. The quality of the water is OUTSTANDING, like for real I'm not even joking it's the closest we've ever gotten to drinking Icelandic water (if you know you know). The machine that goes under the kitchen sink does take up a bit of space (especially if you have a small cabinet) and it makes a little bit of noise but we just sat it atop an old foam kneeling pad we had and I can barely hear it now. We tried to put the machine in the basement and run the hoses down, but beware the water pressure may suffer for that, we ultimately put it back in the cabinet. The water pressure output from their included faucet is slower than my impatient self likes, but again, the water quality is so superior that I will gladly wait 3 seconds longer to fill my glass. Not sure yet if the 6-12mo filter life is accurate, I'll be back to update on that next year! But for now, one of the best purchases I've made, the price is totally worth the value!

(Old Review; scroll down to updated 1/13/2021): Love the taste, so many advantages as others have said. The life of the filter, not so much though so far. Live in Manhattan (NYC) where TDS in around 225, TDS out after 30 seconds anywhere between 4-7 which is remarkable. Purchased the Waterdrop Tankless 600GPD on Jan 27, 2021 and having used it daily for 90 days, making about 2-3 gallons per day for two people, plants and humidifiers. The "life of the filter" indicator light has 6 levels, and now it's down to level 1, indicating the life of the filter is almost over? Not sure if there is an error or problem, but I don't think TDS 225 or NYC water is that dirty. Will contact Waterdrop to confirm. But their estimates were 1 year or 1000 gallons which ever comes first. I'm estimating that we've made 250 gallons so far. While the product's water taste is phenomenal, the annual cost, plus as the filter becomes less efficient more quickly over time producing more waste water and the annual 'filter goes into landfill' waste becomes concerning O_o. Will contact Waterdrop and see what they have to say, will update this review. Updated 1/13/2021: I increased the rating to 5 stars. Why? Well, Waterdrop did get back to me, and gave me a 2nd filter to try. Over the spring, summer, and fall, our use was much less (not feeding the humidifiers) and the filter is down to 3 out of 6 bars. Since the most likely use case for 2 people is probably not to feed humidifiers, I think that about a year or 10-12 months use depending on rate of use is about right. If you feed humidifiers (in total this makes the filter pass probably 2-3x as much water as is used by two people drinking alone in the same time period), expect to pay a lot more. TDS drops from low 200's to low teens after 20-30 seconds and single digits after running the filter for a minute or more and the RO water tastes so clean (not muddy as per my neighbors complaint). We use it for coffee and the soda stream (adding back CO2, is it clean I wonder?). Have there been any malfunctions? Only once early in the use of the filter I had some water leaking around the base, not sure where it was coming from. I just retightened the fittings/couplings and it never leaked again, aside from a little water when I replaced the filter. It wouldn't hurt to get a tray for the unit. I'll estimate that filter replacements of $100 annually for two people using it for personal drinking and occasional cooking is about right. Our use case, we water plants, and fill TWO humidfiers in the north east winters, so will replace the $100 filter twice annually at least. You know what? It's totally worth it. I won't hesitate to install one of these at home again. Enjoying drinking fresh clean water, cooking with it, making coffee and tea with it, and having clean humidifiers without calcification has transformed life. Not paid promotion, I bought this unit off Amz. Hopefully this review continues to help people. This system is great, and I won't hesitate to continue support the company and its products.

Went from a water storage tank system to this unit. Decided to try this because of the undersink space saving design. Since I was replacing another RO unit, I already had a feed water line and drain line in place. The install was straightforward and simple. The only additional prep work I had to do was bore a larger hole in the sink to accommodate the RO faucet stem and power cable. After this, just connect the lines to the unit and plug in. The unit only makes some noise during use when drawing water from the RO faucet and afterwards when the reject water is sent to the drain. The noise made by the unit isn't loud and doesn't bother me. It is mostly muffled by the sink cabinet. I prefer this design to a tank based system. A tank system provides more pressure to fill bottles and containers faster but the water storage tank takes up a lot more undersink real estate and needs replaced every few years after the tank air bladder develops holes and water seeps into the bottom of the tank. This unit does not fill bottles as fast (roughly 25 seconds for a 16.9 fl oz bottle) as a storage tank system but I'm in no rush. There is also a couple second delay when the faucet is first turned on before water comes out. The unit produces good filtered water.