Waterdrop WD G2 P600 W RO Drinking Water Filtration System Review

If looking for an RO system that will give you pure water at an affordable cost, you can never go wrong with Waterdrop WD-G2P600-W. It is a tankless under-the-sink RO system that comes in a compact design.

Although designed to be small and sleek, Waterdrop G2 is very powerful. Actually, it’s almost as powerful as the G3 model now that it boasts a 400 GPD flow rate and a comparable filtration.

In this post, we shovel deeper into the features of this model to help decide whether to settle for it or not. Stick around!

But if in a hurry, the key features listed below should help you make an informed buying decision.

Waterdrop WD-G2P600-W Key Features at a glance

  • Innovative tankless design
  • Fast flow rate of 400 GPD
  • Maximum flow rate of 0.28 gallons per minute
  • Weighs 26 pounds
  • Measures 17.33 x  5.91 x 13.98 inches
  • 2 composite filters with 5-stage filtration
  • 1:1 water drain ratio
  • Filter life indicating display panel
  • FCC approved
Waterdrop G2 P600 Reverse Osmosis Water Filtration System

Waterdrop G2 P600 Reverse Osmosis Water Filtration System Review


The system comes in an innovative tankless design. Without the tank, you won’t have to worry about cleaning one from time to time to maintain the purity of your water.

The tankless design also helps to save on space under the sink. This design is also innovative, and unlike most RO filters with tanks, this system wastes less water hence reduced water bills.

And even without a tank, this unit still provides faster water flow. Again, the tankless design makes Waterdrop G2 lightweight and easy to work with. Even setting it up becomes a breeze.


The unit comes with advanced composite filters that offer excellent performance. The composite filter has an activated carbon block and PP membrane.

It reduces large particles, sediment, rust, colloids, fluoride, scale, chlorine, among other chemicals from the water.

It also comes with an MRO filter, including a sizeable reverse osmosis membrane, a sediment membrane, and an activated carbon block. The filter helps to reduce most contaminants, including TDS and heavy metals.

Fast Water Flow Rate

Waterdrop G2 offers a fast flow rate through the combination of a built-in pump and highly efficient filters. Just like the G3 model, it offers a flow rate of 400 gallons per day.

It filters water fast, and in about 12 seconds, you will get a glass of pure water. Therefore, this unit will satisfy your needs while saving time.

Also, compared to the traditional RO systems, which only have continuous water flow for the first 2 minutes, this system, always has a stable water flow.


Although small, this system removes 99% of all toxins in the water. Some of these contaminants include fluoride, chlorine, chloramine, detergents, pesticides, sulfates, nitrates, lead, and arsenic.

And did you know that this system is an older model from Waterdrop? Of course, it is, but it still has a fast flow rate and filtered water to waste water ratio of 1:1.

It is, therefore, only true to say that the G2 operates efficiently and wastes less water. This helps to cut down on your overall water bill.

The system uses a CF filter and MRO filter to remove more than 1,000 contaminants. The CF filter removes sediments, large particles, bad taste, and odor. The MRO filter, on the other hand, removes other contaminants, including micro-toxins.

With the unit, get ready always to get clean water that tastes incredibly smooth.

High Efficiency

This Waterdrop unit is a highly efficient RO system since it creates only one gallon of waste water for each gallon of pure water.

This amount can vary depending on the pressure of the water getting into the system. The higher the input pressure, the less the water wasted and vice versa.

The built-in pump included in the system increases the pressure helping to both increase efficiency and reduce waste.

Installation and Maintenance

Waterdrop G2 is one of the easiest systems to install. You actually don’t have to do much. It’s simple to plug in, and you can hook it up in less than 20 minutes.

However, one thing for you to note is that you’ll have to install a second faucet when using this system. The good news is that the faucet comes in the package.

All the required water lines and hardware also come with the installation kit. Just ensure that you follow the user manual, and you’ll be good to go.

After the installation, you have nothing to worry about. Remember that this is a tankless system, and you won’t be required to clean it from time to time.

And while you still might want to wipe down the filter, and maybe the inside during filter replacement, all you need is a microfiber cloth. It’s enough to wipe down the dirt that might have accumulated.

Actually, the only time you need to be extra careful is when replacing the filters. Tighten them well to prevent minor leaks.

When do you replace the system’s filters?

When the time is ripe for filter replacement, a yellow light will show on the system’s face. When it later turns red, it’s time to install a new filter.

The CF composite pre sediment and carbon block filter require replacement once per year. The MRO composite filter should be replaced once every 2 years.

Product Warranty

Multiple warranties cover the filters separately from the system. For example, the MRO filter has a 2-year warranty, while the CF filter is covered for one year.

Product Summary

The Waterdrop G2 is a tankless under-the-sink RO system that is small but powerful. It’s space-saving, highly effective, with a fast water flow rate of 400 gallons per day. Installation and maintenance of this system is also very easy.

It is suited for small families but can also work for small offices and removes more than 99% of all contaminants present in the water.

Pros and Cons


  • Easy to install and maintain
  • Fast water flow rate
  • Highly effective and space-saving
  • Removes 99% of contaminants
  • Comes in a sleek design
  • Quiet operation
  • Lightweight and compact
  • Enhances the taste of the water
  • One year manufacturer warranty


  • Expensive
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