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Waterdrop Reverse Osmosis Water Filtration System, TDS Reduction, 400 GPD Fast Flow, Tankless, Smart Faucet, 1:1 Drain Ratio, WD-G2-W (2 Cartridges and 1 Faucet Included)

Waterdrop Reverse Osmosis Water Filtration System, TDS Reduction, 400 GPD Fast Flow, Tankless, Smart Faucet, 1:1 Drain Ratio, WD-G2-W (2 Cartridges and 1 Faucet Included)


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  • [Superior Performance] Removes TDS and 1000+ Contaminants in tap water.
  • [Smart easy-to-install design] Waterdrop RO water filtration system is an innovative all-in-one intelligent water purification system. In just a few minutes, the Waterdrop RO system can be installed completely.
  • [No-tank design] Its no-tank design prevents secondary pollution.
  • [No Waiting for Clean Water] RO system offers faster water flow (400 GPD) and produces pure water more quickly that can satisfy the water demands of the whole family and even small business.
  • [1: 1 Low Water-waste Rate] Waterdrop Reverse Osmosis Water Filtration System saves water waste by 300%.
  • [Meets Various Water Demands] Besides installing it under the sink, it can also be connected to a refrigerator to produce pure water and ice from the fridge.
Why choose the Waterdrop Under-Sink Reverse Osmosis Water Filtration System?
New technology, new experience. Two major innovations.
The G2 RO system is 5.9 inches wide and takes up very little space under the sink. The faster and more stable water flow will produce a cup of filtered water in 12 seconds.
The RO system uses the filter composition technology with a filtration accuracy of 0.0001 μm, removing most of the contaminants, including heavy metals, and chemical residues in tap water.
Waterdrop is your reliable water solution.
We work hard to meet your needs, and we take feedback from every customer seriously. We are open to your suggestions and would like to help you solve problems.
*If you use well water as the source, please ensure that the feed water is pre-filtered.
*An electrical outlet is required to operate the RO system.
Superior accessories
Safe material provides clean water all day long.
  • Automatic notification system for safer use
  • The filter life indicators automatically notify you about the service life and usage.
The RO system uses excellent lead-free plastic material. It is equipped with superior filter media that ensures effective filtration. The system also comes with a lead-free brushed nickel faucet and an easy-to-install U-shaped gasket, giving you access to clean water throughout the day.
Innovative composite filter
Filter composition technology
The new filter composition technology employs an excellent filter combination to achieve a more efficient filtration. The filters can soften water and effectively remove more than 1,000 contaminants.
Activated Carbon Block Composite Filter
The CF filter adopts a sediment PP membrane layer and an activated carbon block layer. It removes common impurities such as sediment, rust, large particles, colloids, residual chlorine, fluoride, and scale.
Reverse Osmosis Membrane Composite Filter
With its large filtration area, the MRO filter effectively removes over 1,000 impurities such as heavy metals, organic material, and TDS. The activated carbon block improves the taste of the output water.
Removable contaminants list
Removes common contaminants
The RO system removes 99.99% of TDS, chlorine, bad taste and odor, chloramine, scale, and turbidity.
Removes carcinogens and heavy metals
Removal of carcinogens: chromium (hexavalent), chromium (trivalent), cadmium and cadmium compounds, and ferric oxide.
Removal of heavy metals: lead, mercury, barium, copper, radium 226/228, and aluminum.
Removes contaminants larger than 0.0001 μm
The filter aperture is so fine that contaminants larger than 0.0001 μm cannot pass through the filters, including cysts.
Removes chemical residues in water
Removal of inorganic pollutants: arsenic and inorganic arsenic compounds, fluoride.
Removal of organic pollutants: asbestos, benzene, formaldehyde, phenytoin, nitrate, nitrite, bisphenol A, trichloromethane, PFOA, etc.
WD-G2-10 WD-G2-11
Filtration media Sediment PP membrane and activated carbon block Reverse osmosis membrane and activated carbon block
Recommended replacement cycle 12 months or 1,100 gallons 24 months or 2,200 gallons
Size (Diameter * Height) 4.9" * 8.1" 4.9" * 15"
Compatible model WD-G2-B/WD-G2-W WD-G2-B/WD-G2-W
Customer Reviews
*Some reviews are from for the same product.
Simple Installation w/ Great Results

SetupFirst off, I live in an area with very poor water quality. The water is poor in terms of hardness and overall TDS. These are the two primary attributes that affect taste and can easily be measured. A simple TDS meter can be had for less than $15 on Amazon. Hardness/scaling is generally noticed by water spots on your dishes, and white or green crust that builds up on your faucets. Water from my tap tested at over 500 TDS which is extremely bad.InstallationAs far as the installation, it really is quite simple. When they say an average person can install this in 30 minutes, they are being accurate. I took my time reading through all the instructions and watching the video installation and probably finished in no longer than 45 minutes. A simple drill should be all you need. Drilling a quick hole in the drain pipe & installing a slot for the included water faucet, if you don't already have one, are the only things that may give you pause. These are covered in the manufacturer's YouTube video and I felt more than comfortable after watching it. Many people likely wouldn't need to drill a slot for the faucet, but I did. They give you a sizing circle but I actually went much smaller as the actual faucet is smaller than indicated by the sizing circle.ResultsAs originally mentioned, my water tested at over 500 TDS. Using the highest quality Samsung fridge filter from WaterDrop my TDS dropped by about 100 and was in the low 400's, which is still quite high. After completing draining I tested my water at approximately 100, which was higher than expected. As I ran the water a bit longer I saw it drop further. After running through some cycles the faucet started producing water that tested as low as 40 in terms of TDS. This is extremely good in terms of where I started. The system claims to reduce TDS by about 90% or more and that's right where I am at. If you have a better starting point, your results should be even better.Other ThoughtsOverall I'm thrilled with this little device. My in-laws have a traditional R/O system that takes up the entire cupboard under their sink. Doing some research, these can have issues with mold growth if left unused for any sort of prolonged period. I feel much better with this system and it fits in nicely aside my waste disposal unit. This system has a water waste ratio of 1:1 meaning that for every one cup of filtered water you produce, you produce one cup of water waste that goes down the drain. This is actually substantially better than most systems I've seen but worth noting if you care about that. It produces a sort of low hum when in use but I actually kind of like it. It lets me know it's working. I drink tea almost every day and now I finally have good water that won't cause build up on my electric kettle. The taste is akin to bottled water as well.Additional ConsiderationsOne of the things that bugs me is that my fridge produces ice that ends up flaking in water. As it melts you can tell there are clear particulates in your water. These are termed as "harmless" and should just be minerals that are in your pipes but I definitely don't like it. Going forward I may pick up a second unit to hook up behind my fridge. The only challenge would be figuring out how to connect direct to the unit since it would not be directed to the included faucet. Overall I think this is one of the best purchases I've made in the past year and have been happily using the system for over a month now.
It works

Easy use, clear taste for great coffee.
Super easy install

I honestly have no experience in installing anything and I figured it out. I
Clean, Fresh, Reverse Osmosis Filtered Water from the kitchen sink

Bought the product b/c my brother-in-law installed same one in his house 9 months ago and they have great tasting, clean water without the use of a bulking, stand alone water machine like we had.<br>Installation is pretty straight forward, but you do need an electrical outlet under the sink, something we had to install. We were spending almost $1100 per year on bottled water service, so even with the added cost of the electrical outlet the system will pay for itself within the first year.
No more bottled water!

We have been looking for years for a filter that would fit in our cabinet. Finally! No more bottled water. The unit was very easy for my husband to install.
Waterdrop Reverse Osmosis Water Filtration System