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Waterdrop D6 vs G3 Review (Do NOT Buy Before Reading)

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Smart Summary: Waterdrop D6 vs G3
The Waterdrop D6 and G3 filters both remove harmful water contaminants that negatively affect safety, taste, and odor. The D6 includes one RO filter with 6-stages. The G3 P800 has three filters, a seven-layer reverse osmosis membrane, UV light sterilization, and a smart faucet.

Tired of settling for tap water? Click here to learn more about the Waterdrop G3.

For those who want the absolute best cooking and drinking water in their homes, Waterdrop is one of the top reverse osmosis water brands. Two of the products have risen to prominence because of their tankless, compact design that still includes multi-step filtration. When testing in preparation to compare these systems, we looked at several competitors and tested each system on different water types to get the best results.

The following review looks at both reverse osmosis systems in greater detail. The following is a comparison of two high-end pure water filters, the D6 and Waterdrop G3. These types of water filters are placed in a higher class because of their premium builds and features, such as multi-step filtration. However, both have a high GPD and many other similarities, so it really comes down to what features you value most in an under-sink water filter.

About Waterdrop Filters

waterdrop g3 review

Waterdrop is one of the top water filtration brands in the world. Their whole company was based upon building better water filtration due to a lack of multi-step water purification that was affordable and convenient to install at home.

This brand creates a number of different RO system water filter types including under-sink filters, countertop filters, RO membrane, outdoor, POE filters, and more. Their products are certified and have won awards, such as the Reddot design award.

In the world of water filtration, there are many old school brands that seem to have machines dating back to the 1970s. However, this water filtration brand was started by a group who wanted to revolutionize water purification systems.

That’s the idea behind Waterdrop. Founded in 2015, this water filtration company earned attention because of its tankless RO system, including countertop, and under-sink water filtration.

The under-sink water filters provide a lot of convenience for small to medium households or even just a chef who likes the finest water to cook with in their kitchen. These are multi-step water filters that hook right into your kitchen faucet and save under sink space. It’s perfect for those who want deep filtration for cooking and drinking water.

Are Waterdrop Filters Any Good?

While there are many brands with longstanding histories in filtered water, Waterdrop entered the market with its Waterdrop Reverse Osmosis Systems just a little over six years ago and has dominated the market because of its premium-quality products and comprehensive customer support.

The top two offerings from this brand include the Waterdrop G3 and D6. While both have a conveniently sized design with multiple filters and accessibility, one is slightly more affordable than the other, and they have different capacities.

Depending on your household size, these two tankless ro systems offer the best options on the market for filtered water systems. In most cases, you want at least four filters in a home water filter system, especially for cooking and drinking water.

In addition to our own research, we read hundreds of reviews about these filters and how they’ve worked for each customer. These reviews detailed long-term, reliable performance that required very little maintenance, which is exactly what you want in a reverse osmosis system.

Here’s How They Compare

Waterdrop G3

When searching for an RO system, tankless, long filter life, and low maintenance with high-level purity and clarity is what you’re looking for.

The Watedrop G3 is a tankless RO water filter that produces 800 GPD, delivering a glass of drinking water in about 12 seconds.

The best thing about under-sink filters is their design, as they are semi-permanent without the hassle of installing a whole house conventional water filtration system if you just want pure ro water for drinking or cooking in the kitchen.

One of the reasons the Waterdrop G3 RO system is so highly praised is because of its 800 GPD capacity, long filter life, and great water quality from its multi-stage filtration. It has a pre-sediment filter and two carbon block filters, as well as a reverse osmosis membrane.

What We Like

This system comes with 7 stages of water purification. In tests, this RO membrane removed 99% of toxins, large particles, and other harmful substances from water supplies. Whether you have a well water system or city municipality water lines, these Waterdrop filtration systems work well for the majority of homes.

The G3 is a high-end, well-made filters with seamless designs. These fit perfectly in a compact under sink space, making it more convenient than other filtration systems. The Waterdrop G3 has a higher waste water efficiency with a 3:1 ratio, resulting in lower water usage bills.

Since this product has seven stages of filtration, the Waterdrop G3 also has a 99% purification rate. The stronger RO membrane filtration makes it a great option for water sources that may have lead, chlorine, bacteria, and other contaminants. The additional UV filter makes it even stronger than the D6 reverse osmosis filter.

Another great part about Waterdrop systems is the customer service. You’ll always be able to reach someone if there is an issue with your water filter, and it’s covered by a warranty.

What Could Be Better

Everything about this Waterdrop reverse osmosis system is high-end and easy to use. While it has a real-time water display in its smart designer faucet, you’ll want to install this water filtration system in an easy to reach spot below your sink if you want to use it. Other than that, the installation and usability are higher than every other under-sink filters on the market today.

Waterdrop D6

When it comes to comparing these traditional RO systems, it comes down to capacity and filtration. The D6 is a top-of-the-line option, but the maximum is 600 GPD with this system. This is better for smaller households who still want a tankless option that also has a reverse osmosis membrane layer.

One thing we noticed is that the waste water efficiency with this model is a little less than the G3. You’ll only get a wastewater ratio of 2:1 with the D6, which is less than 3:1 low drain ratio of the Waterdrop G3.

What We Like

There are many great features to the D6, including its above average 600 GPD and smart designer faucet with LED light. This system also has slightly less filtration stages than the G3. This one still includes a RO membrane, but it also comes with a composite filters with long filter life.

Water still tastes refreshing, smooth, and pure after going through this RO water filter. That’s because it has a post-activated carbon block layer. While this isn’t as comprehensive as the G3 filtration system, the D6 does a great job of filtering out most toxins.

The faucet will also suit most kitchens thanks to its high-end, premium design. It’s also sleek and very compact, which allows you to set it up under most sinks.

What Could Be Better

While the D6 is an incredible reverse osmosis system, it doesn’t have as many filtration layers or a UV filter, which means that it may not be suitable for well water homes. Larger homes that need a higher capacity may want to look elsewhere as well.

On another note, this system is one of the best, but it isn’t as wastewater efficient as other RO systems. For instance, the high-end G3 version reduces water usage bills considerably. You may not see the same savings with the D6.

How We Picked And How We Tested Each Reverse Osmosis System

One of the benefits of a tankless water purification RO system is that it delivers purified, fresh, filtered water much faster, anytime you want it, without waiting. Tank filters don’t have the same convenience.

Waterdrop Filters are known for their robust water filtration performance, easy maintenance, strong customer support, and low cost of operation. Looking at each of these filters individually, it’s easy to see Waterdrop’s superior design in each. However, the difference really comes down to the flow rate, taste, and purity.

Since both are tankless water filtration systems, we wanted to review the effectiveness separately while also comparing to competitors. Customer feedback, positive reviews, negative experiences, filtration process, and best practices were also considered in determining which system was the best.

Who Should Get A Tankless RO System?

With any water filtration purchase, you’ll want to look into the details. While developing this reverse osmosis system review, we wanted to look at the sturdiness and installation of each machine, too. While we have experience with water filtration installation, it’s still important that these are convenient and easy to set up. You should quickly be able to take it out of the box and attach to your faucet to get fresh, clean water quickly.

It’s no secret that there is a clean water problem in today’s homes. However, both renters and homeowners can benefit from a tankless under-sink water filtration system. These RO water filters are able to clean about 99% of all harmful substances from your water. This ensures that your cooking and drinking water is clean and free of toxins.

If you want to make sure that your home’s water is truly cleaner after installing one of these, it’s best to get a water test that detects lead, arsenic, pesticides, chlorine, cysts, bacteria, and other toxins. We found that both of these RO water filters were able to remove 99% of all harmful substances.

Small to medium households or homes with choosy chefs should pick one of these under-sink RO systems. Below, we show you which of these filtration systems matched exactly what we were looking for in a new home water filtration system.

Our Pick
Waterdrop G3

Due to its seven-stage RO membrane filter system and long filter life, the Waterdrop G3 is the best option out of these two systems. The G3 will provide a higher flow rate with cleaner water that goes through several processes, including reverse osmosis.

However, one of the main differences is the wastewater efficiency. The G3 will save you more on water usage bills in the long-term. You’ll also like it’s improved filtration performance overall. The design and casing also look a bit sleeker than the D6 RO System.

Runner Up
Waterdrop D6

If you are looking for a more affordable option with multi-stage filtration and dow reverse osmosis membrane, then the D6 RO System is a good option. It has a low noise design. The flow rate of 600 GPD and 2:1 offers decent filtration and wastewater efficiency in comparison to other competitors on the market.

Here’s The Best Competing Products

Frizzlife PD600

In addition to these two under-sink filters, other traditional RO systems you may want to look into include the Frizzlife PD600. This is a decent filter with multi-stage filtration that removes most harmful substances. It has a modest filtration performance in comparison to Waterdrop’s filters. However, even the latest models do not have an option for UV filtration like the Waterdrop G3, filter life indicator, and it doesn’t have many smart features.