Product Review: Waterdrop RO Reverse Osmosis Water Filtration System

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Considering a Waterdrop filtration system? Read our Waterdrop RO Reverse Osmosis Water Filtration System review to find out if this system is right for you.

If you are on the hunt for the ideal system to filter your water, you might be considering a product from Waterdrop such as the Waterdrop RO reverse osmosis drinking water filtration system.

To help you figure out if this is the right system for your needs, we will go over its features, pros, and cons in-depth in our Waterdrop RO Reverse Osmosis Water Filtration System review. To get started, let’s talk about the filter, design, and other key features.

Waterdrop RO Reverse Osmosis Water Filtration System Features

Waterdrop Tankless RO system Review - WD G3

First, let’s take a look at the most important features of Waterdrop model WD-G3-W.

Waterdrop RO Reverse Osmosis Water Filtration System Filter 

This reverse osmosis system uses the Waterdrop WD-G3-W Filter. Contained in this filter is a 0.0001μm RO membrane. The membrane removes 99% of TDS, fluoride, heavy metals, limescale, and other unwanted substances. There also is an activated carbon block that makes your water taste better through the application of high-precision activated carbon granules derived from coconut shells.

Regarding filter life, the company explains, “The first stage front compound filter element is recommended to last for 6 months or to filter 550 gallons of pure water. The second stage RO element is recommended to last 24 months or to filter 2200 gallons of pure water. The third stage rear carbon rod filter is recommended to last 12 months or to filter 1,100 gallons of pure water.”

detail of the filter layers used to clean the water

Waterdrop RO Reverse Osmosis Water Filtration System Design

This product features a design that does not require a tank. That means that it takes up around 50% less space than reverse osmosis systems that do require a tank.

User-friendly features include a water quality indicator as well as an indicator that informs you when it is time to change the filter.

Waterdrop RO Reverse Osmosis Water Filtration System Installation

What do you need to know about Waterdrop Reverse Osmosis installation?

This unit goes underneath your sink. What is great about its build is that it is relatively compact, so you do not need a lot of room under your sink for it to fit. It measures 18.06 inches x 5.68 inches x 17.76 inches. As most sinks feature a height underneath of 27 inches, the majority of customers will probably find room for this product.

You can complete the installation in a few simple steps following the manual that comes with your purchase.

How long does it take? It depends on your skill level and the logistical issues under your sink. The product description says it takes just a few minutes. But realistically, it may take you longer, especially if you don’t have a lot of experience. It is pretty fast and easy, but if you are a novice, give yourself around an hour.

After you finish installing the system, there is one more step you need to complete before you can use it. You need to flush it for 30 minutes. You will see a blue light flashing during this process. When it stops, you will know that it is ready.

30 minutes of flushing means wasting a lot of water if you don’t put it to good use, so plan ahead and water your plants or do something else useful with it if you can.

Waterdrop RO Reverse Osmosis Water Filtration System Water Quality

You can look forward to safe, healthy water once you have this system installed. 99% of harmful contaminants will be filtered out by three filters and seven filtration stages.

With the fresh taste of the water that emerges from the filtering process, you’ll be able to taste the difference.

Waterdrop RO Reverse Osmosis Water Filtration System Flow Rate

Something that is really awesome about the Waterdrop RO Reverse Osmosis system is that it has a 1:1 low drain ratio. According to the company, this reduces your potential water waste by as much as 300%.

That makes this system better for the environment and for your budget than many competing products.

Waterdrop RO Reverse Osmosis Water Filtration System Certifications

This product is backed by the NSF 58 TDS reduction certificate as well as the NSF 372 lead-free certificate. If you are interested in the records, you can view them here at NSF.

Waterdrop RO System G2 vs. G3

The G3 version of this system is the one we have been looking at, but it is not the only Waterdrop RO reverse osmosis system. There is also the G2 system to consider. What is the difference between them?

comparison of waterdrop ro systems G2 vs G3

These are both similar systems with a couple of key differences:

  • Whereas the G3 measures 18.06 inches x 5.68 inches x 17.76 inches, the G2 measures 17.32 x 5.91 x 13.9 inches. It is, on the whole, an even more compact unit.
  • There are three filters in the G3, whereas there are 2 filters in the G2. The G3 uses the Waterdrop WD-G3-W Filter. The G2 uses the Waterdrop WD-G2-B Filter. The filter in the G3 includes 7 stages, whereas the one in the G2 features 5 stages.
  • The units both feature the same reverse osmosis technology and 1:1 drain water ratio. They also both are 400 GPD, 0.28GPM.
  • The G3 includes some other additional functionality over the G2, for example a real-time TDS reading on an LED display on the front panel. The G2 also lacks the NSF certifications the G3 has.

If you need an extra-compact unit or you are on a tighter budget, the G2 may be the right choice. But if you have the room to spare under your sink and in your budget, the G3 is the superior system and well worth the extra cost.

Another Alternative: The Waterdrop Chubby Water Filter Pitcher

What if you do not have room under your sink even for a compact filtration system, or simply cannot afford the expense at this time?

Waterdrop chubby water pitcher on white background

One idea is to consider a filter pitcher such as the Chubby Water Filter Pitcher, also available from Waterdrop. This 10-cup pitcher is NSF-certified. Each filter can process 200 gallons before you need to replace it. It is BPA-free, and can help you to filter out chlorine, arsenic, fluoride, lead and other contaminants through a 7-stage process.

Who Should Consider the Waterdrop RO Reverse Osmosis Water Filtration System?

If you have room underneath your counter for a compact, efficient water filtration system with these dimensions, the G3 WaterDrop RO System is a suitable choice. It also is worth considering if you want to reduce water waste.

Related: The Best Home Reverse Osmosis Systems: A Review of the Top Models

What Customers Are Saying About the Waterdrop RO Reverse Osmosis Water Filtration System

In the reviews of the waterdrop RO G3, customers say the following.

  • The water taste is great and similar to bottled water.
  • Many customers appreciated the clean elegant design and a small footprint.
  • The filter eliminated 99% of impurities found in their tap water
  • The water pressure is about the same as using a refrigerator spigot.
  • There is a slight noise when running the system, this was expected.
  • Most customers found the unit was very easy to install. One gentleman reported a leak after installation, but was able to fix it with a simple rubber O-ring.
  • The TDS meter was very accurate. One customer installed a dual meter just to check to confirm the reading.
  • It did a great job of removing excess salt from their tap water and greatly improved the taste of their water.

Frequently Asked Questions

Q: Can you connect the Waterdrop RO Reverse Osmosis Water Filtration System to your refrigerator/freezer?

A: You can connect the Waterdrop Wd-G3-W under-sink RO system to your fridge. If you want to do this, first, register the product. Then, you will have the option of purchasing an accessory kit to help you complete this hookup.

That being said, you should proceed with caution. The company writes, “Connection under mismatched circumstance may result in many problems, including but not limited to: slow ice making, frequent start-stop issue, etc. … To determine if the RO’s outlet pressure is enough to be connected, you may need to acquire the refrigerator’s pressure requirement first, which can be found in its user manual. For your reference: RO’s outlet pressure: ca. 35 psi.”

Q: Does this system add minerals back into the water?

A: No, this system does not re-mineralize your water. But the company stated in 2020 that it was working on Waterdrop filters to alkalize water. The implication was that this filter would also be able to re-mineralize the water. You may want to check into this if you want to drink filtered water that is rich in healthy mineral content.

Where to Get the Waterdrop RO Reverse Osmosis Water Filtration System

Let’s wrap up our Waterdrop RO Reverse Osmosis Water Filtration System review. If you want a compact, powerful water filtration system to put under your sink, the Waterdrop RO Reverse Osmosis system is worth considering.

While the G3 is more expensive than the G2, the superior system is worth the extra cost if you can swing it. Plus, because this system is so great at minimizing water waste, it can help you reduce your water bills over other models, which means that you can look forward to recouping some of those costs over time.

Where can you buy the Waterdrop RO Reverse Osmosis Water Filtration System? We recommend If you are ready to start filtering your water now, click the link below to get your Waterdrop RO under-the-sink G3 system now.