Waterdrop D6 vs G3: Look What We Found (2023) - Aqua Professor (2023)

Despite their different features, Waterdrop D6 and G3 under-sink reverse osmosis filters efficiently improve your water quality. The D6 model has a six-in-one composite filter, while G3 utilizes three separate filters.

As the ultimate comparison between Waterdrop D6 and G3 boils down to critical factors like filtration efficiency and high flow rate, we promise to provide the best guide to help you choose the right filter.

Keep reading!

Table Of Contents

  • 👉Waterdrop D6 Review: Best Tankless RO In 2023?
  • 👉Waterdrop G3 Review: Worth The Price?
  • ⚖️Waterdrop G3 vs D6: Which is The Best System?
  • 📝Waterdrop G3 vs D6: Detailed Comparision
  • 🏆Difference Between Waterdrop D6 and G3: Who Wins?
  • 💡Waterdrop D6 vs G3: FAQs

👉Waterdrop D6 Review: Best Tankless RO In 2023?


  • Tankless, compact, and space-saving
  • 6-in-1 composite filter technology
  • 600 GPD filtration capacity
  • Longer filter lifespan
  • Smart Faucet with TDS monitoring and filter life indicators
  • Less leakage due to integrated water circuit
  • NSF- 58, 372 certified
  • 30-day money-back guarantee
  • Less water wasted (2:1 drain ratio)


  • Tricky installation
  • Noise can be disturbing
(Video) Waterdrop G3 Reverse Osmosis Water Filter System Review – Should You Buy?

The WD-D6 Tankless RO system is a new addition to the Waterdrop family with upgraded composite filter technology and less water wastage.

👉Waterdrop G3 Review: Worth The Price?


  • Compact and tankless design.
  • 400 GPD filtration capacity
  • 8-Stage Deep filtration
  • NSF- 58, 372 certified
  • 91.9% TDS reduction rate
  • Easy installation and maintenance
  • Easy 1-twist filter replacement
  • Smart designer Faucet
  • TDS monitoring and filter life LED indicators on housing
  • 0.42 GPM Flow rate
  • 30-day money-back guarantee


  • Costly
  • High water wastage (1:1 drain ratio)
  • Less space-saving
  • Leakage issues

Waterdrop G3 is a stylish-looking compact under-sink water filter with eight stages of filtration, a smart display, and a 400 GPD filtration capacity.

⚖️Waterdrop G3 vs D6: Which is The Best System?

Under Sink RO:Filtration EfficiencyFlow RateEase of Use and MaintenanceCertificationsWarranty and Customer Support
Waterdrop G3The 8-stage filtration system that removes1000+ water contaminants400 GPD filtration capacity with0.28 GPM flow rateEasy to install, use, and replace filters, but meter settings reset automatically.NSF 58,3721-year manufacturer warranty and Lifetime customer support
Waterdrop D6The 6-stage filtration system that removes 1000+ water contaminants600 GPD filtration capacityTricky installation but easy maintenance.NSF 58,3721-year manufacturer warranty and Lifetime customer support

📝Waterdrop G3 vs D6: Detailed Comparision

1️⃣ Filtration Efficiency

Waterdrop D6 vs G3: Look What We Found (2023) - Aqua Professor (3)

G3 and D6 are efficient water cleaners with a 91.9% TDS (Total Dissolved Solids) reduction rate and can remove 1000+ chemical contaminants from water.

They help eliminate chlorine, chloramines, sediments, PFAS, heavy metals (like lead and chromium), cysts, and other harmful substances from water.

The main feature lies in the multi-stage filtration process of both filters. Waterdrop D6 utilizes a 6-in-one integrated composite filter, while G3 has eight stages of filtration divided into three filter cartridges.

(Video) 5 Best Tankless Reverse Osmosis Systems In 2023 [Honest Reviews!]

The six filtration stages included in the D6 composite filter are:

  • The polypropylene cotton layer
  • Activated carbon layer
  • Micron filtration membrane
  • A reverse osmosis membrane layer
  • Post-activated carbon block layer
  • Non-woven fabric layer.

The eight filtration stages of Waterdrop G3 include:

  • CF (PP cotton + Carbon Block + PP cotton)
  • RO (3-layer DOW RO membrane)
  • CB (Post-activated Carbon Block)

The layers are arranged so that they consecutively remove large to minute particles.

Neither D6 nor G3 comes with a pre-installed remineralization filter. You must purchase and attach an additional remineralization tank to your under-sink unit to enjoy the benefits of restored minerals in purified water.

The winner based on filtration capacity is Waterdrop D6, which provides the same benefits but a more convenient technology.

2️⃣ Flow Rate

Waterdrop D6 vs G3: Look What We Found (2023) - Aqua Professor (4)

The filtration capacity of Waterdrop G3 is 400 GPD (Gallons Per Day), which is less than the filtration capacity of D6 unit – 600 GPD. We confirmed this on testing and found that the flow rate of D6 was more than that of G3 as it fills the same glass of purified water in less time.

Coming to water wastage, Waterdrop D6 has a 2:1 pure-drain ratio, while for G3, it is 1:1. So, Waterdrop D6 is more eco-friendly as for every gallon of pure water obtained, G3 wastes an equal amount of water, whereas D6 wastes half of it.

The winner of this round is Waterdrop D6 again, as it has a faster filtration process with minimum water wastage.

3️⃣ Ease of Use and Maintenance

Waterdrop D6 vs G3: Look What We Found (2023) - Aqua Professor (5)

Waterdrop D6 and G3 are easier to install than traditional units as they are tankless and compact. However, among themselves, customers have found the installation of Waterdrop D6 more tricky than G3. The issue is usually faced during pipeline connections and facet fittings.


(Video) Best Tankless Reverse Osmosis System 2023 - The Only 5 You Should Consider Today

Regarding maintenance, Waterdrop D6 requires only one replacement filter every year. On the other hand, as Waterdrop G3 has three filters with different lifespans, you must change each cartridge separately and timely. So, the replacement filters cost higher for G3 than for D6.

Moreover, holding a composite filter, D6 has closed integrated water circuits and hence, less chance of leakage. In comparison, Waterdrop G3 has received various complaints of water leakages in its 3-cartridge system. Thus, the overall cost of maintenance increases in G3.

Both reverse osmosis systems have an on-shelf smart kitchen faucet with real-time TDS monitoring and an LED light display to indicate filter lifespan. The smart display is placed on the faucet in D6 and the filter body in G3.

We declare Waterdrop D6 the winner in ease of use and maintenance because of its convenient integrated composite filters and smart features.

4️⃣ Certifications

D6 and G3 belong to the same brand – Waterdrop, which is NSF/ANSI certified for 58 and 372 standards for all its Tankless RO systems.

In addition, they have undergone and passed 400+ lab tests that prove their filtration efficiency. They also hold certifications for WQA (Water Quality Association) and IAPMO (International Association of Plumbing & Mechanical Officials).

So, it’s a tie here.

5️⃣ Warranty and Customer Support

All Waterdrop buyers get the same lifetime customer and tech support. As for Waterdrop D6 and G3, you can expect a 30-day satisfaction guarantee and a 1-year repair and manufacturer warranty.

In addition, you can contact them by email or phone for consultation, complaints, and queries. They also offer a live chat facility on their website for all visitors.

Again, it’s a tie.

🏆Difference Between Waterdrop D6 and G3: Who Wins?

The clear winner of this head-on comparison is Waterdrop D6.

Waterdrop D6 reverse osmosis filter offers the same good-quality and great-tasting water at much more convenience. It is a cheaper and eco-friendly option with a 2:1 waste-water ratio.

Its 6-in-1 advanced composite filters with a 0.001-micron pore size are efficient at removing harmful contaminants and easy to maintain.

It has a higher flow rate of 600 GPD to save you time and provide a constant water supply. Its sleek and compact design can fit even small under-sink spaces.

💡Waterdrop D6 vs G3: FAQs

After reading this article, we hope you can choose the better Waterdrop reverse osmosis system for your home.

(Video) Waterdrop D6 Reverse Osmosis Water Filter Install and First Use

However, if you still have some questions about these water purification systems, you must first go through our answers to some frequently asked questions below:

Is Waterdrop a good reverse osmosis system?

Seeing the excellent customer rating Waterdrop has garnered over the years, we can say it is a good reverse osmosis system. Furthermore, these filters are available in different models for different needs and requirements.

However, customers have faced shipment problems, high costs, and non-compatible faucet parts, but their good customer service always comes to the rescue (except for the high price).

How is tankless RO different from traditional RO?

The only difference between tankless and traditional reverse osmosis systems is the design. Traditional RO systems have a storage tank to store filtered water that can be quickly fetched later. The Tankless RO systems lack storage tanks and deliver freshly filtered water using an internal pump when needed. Thus, traditional RO systems are bulky, while tankless ones are space-saving and compact.

When was Waterdrop D6 launched?

The Waterdrop D6 under-sink reverse osmosis system was launched in 2020. Eyeing the success and pain points of previous water filtration models, Waterdrop introduced the D6 RO filter as a massive upgrade to other competing systems in the water filtration industry.

How long do Waterdrop G3 filters last?

There are three replaceable filter candles in the Waterdrop G3 model – CB (Activated Carbon Filter), CF (Pre-sediment and Carbon Block Filter), and RO (Reverse Osmosis Membrane Filter).

The topmost CB filter lasts 12 months or 1100 gallons of water. The middle CF filter can last six months or 550 gallons of water. Lastly, the RO filter at the bottom has a comparatively long filter life of about 24 months or 2200 gallons of water.

Does Waterdrop remineralize?

No. Waterdrop tankless RO water filtration system does not have an in-built remineralization tank/filter. The good news is you can still purchase Waterdrop’s add-on remineralization filter. It attaches between your central RO filtration unit and the faucet. It helps restore essential minerals often lost due to intense filtration into clean drinking water.

Waterdrop D6 vs G3: Look What We Found (2023) - Aqua Professor (6)

Adarsh Pillai

Adarsh is a Health & Nutrition Sciences graduate with expertise in environmental health. He is associated with ventures like Glacier Fresh Filter and Simpure Filter Systems. Through Aqua Professor, he intends to provide helpful information to every home to help them make smarter decisions.

(Video) Best Tankless Reverse Osmosis Systems Review💧(Ultimate 2023 Guide)


Is waterdrop filters legit? ›

Waterdrop is well known in the water filter industry for its high-quality at-home water filtration solutions. The brand offers a variety of water filter types to suit all needs and budgets, from reverse osmosis water filters to under sink filters, faucet water filters, and water pitcher filters.

How long does a waterdrop filter last? ›

Waterdrop NSF Certified Replacement Filters for ACF Faucet Filtration System, Reduces Chlorine, Taste and Odor, Last Up to 9 Months (Pack of 3)

Why is my waterdrop filter beeping? ›

Red with beeping means filter needs to be changed. You don't need to turn off the water supply to replace the filters, and as soon as you replace one, the unit automatically flushes the filter before allowing you to dispense from the faucet.

How long do Waterdrop G3 filters last? ›

The G3 CB water filter provides up to 12 months or 1,100 gallons of clean water for you and your family, based on water condition. A twist to change the filter in 3 seconds. No tools required. The G3 CF water filter provides up to 6 months or 550 gallons of clean water for you and your family, based on water condition.

Is Waterdrop filter a Chinese company? ›

Waterdrop Inc. is an insurtech platform headquartered in China. Founded in 2016, with coverage of Waterdrop Insurance Marketplace and Medical Crowdfunding, Waterdrop offers insurance and healthcare service through technology.

Does Waterdrop filter remove viruses? ›

The Waterdrop RO system employs a superior DOW® RO membrane, which is three times larger than the ordinary RO membrane. It more effectively removes bacteria and viruses. As an antivirus water filter, the Waterdrop RO system provides the clean, pure water for everyday use.

What happens when you use a water filter too long? ›

Your filter can break down over time, meaning it will no longer be able to filter out the contaminants in your water. If you don't change this before too long, these harmful chemicals and organisms could end up back inside of your home - which defeats the whole purpose of having a water filter.

Do Waterdrop filters remove Microplastics? ›


Filters heavy metals, chlorine, drug residues, estrogens and other coarse particles such as microplastics.

When should I replace my Waterdrop filter? ›

The filter needs a replacement if you notice an unpleasant taste or odor from your water. You should also get a filter replacement if there is a gradual decrease in water pressure.

How often do you replace Waterdrop filters? ›

Replace the filter every 3 months or 200 gallons. Exclusive fast water flow rate of 0.5 gpm. Compatible with all Waterdrop pitcher filtration systems.

What does TDS mean on Waterdrop filter? ›

TDS stands for Total Dissolved Solids and represents the total concentration of dissolved substances in water. TDS is the term used to describe the inorganic salts and small amounts of organic matter present in solution in water.

Why is my Waterdrop flashing blue? ›

Waterdrop provides you with a smart LED reminder that will let you know when to replace the filter. Remember: Blue means good, flashing red means replace soon, and red means replace the filter immediately.

Why is my Waterdrop blinking blue? ›

The waterdrop® logo flashes blue as soon as LUCY® is ready to connect and lights up solid blue for a few seconds when connected.

Where are Waterdrop filters made? ›


The MNR is made in China. In fact Waterdrop is very likely a Chinese company that has a few registered addresses in California and Colorado and ships products directly into Amazon.

Can Waterdrop go bad? ›

Sustainability has no expiration date.

Can a water filter last 5 years? ›

Filters in residential settings should be changed every 6 to 12 months. Reverse osmosis, membranes, and additional alkalisers only need to be changed ever 2 years or 4 years, respectively.

Does AquaTru tell you when to replace filters? ›

To keep your filtered water perfectly clean and free of bacteria, we recommend replacing the Pre-Filter (1-2) every 6 months. The AquaTru will indicate when it's time to replace the filter.

Which is the No 1 water filter brand? ›

Best Overall - Pureit- HUL Pureit Vital Plus Mineral RO+UV+MP 6 Stage, 7L Wall mount Water Purifier. Anybody looking for clean, secure, and delicious drinking water should consider the Pureit HUL Vital Plus Mineral RO+UV+MP 6 Stage, 7L Wall mount Water Purifier. Pureit is one of the best water purifier brands in India.

Is waterdrop filter made in USA? ›

Q: Where is it manufactured? According to an email from the manufacturer: "Our Waterdrop Filters design in USA, and ma…

Does Waterdrop filter remove E coli? ›

The Waterdrop Filter is effective against contaminants like vitriol cholerae, Salmonella typhi, E. Coli, and protozoans. Also the other products of Waterdrop can achieve excellent filtration, to ensure safe and health water for you and your family.

What is the best water filter that filters viruses? ›

The Springwell Whole House Water Filtration System (CF1) with UV Technology is the best water filtration system to remove bacteria from your drinking water – hands down. This feature-packed premium UV water purification system kills 99.9% of harmful pathogens, viruses, and bacteria in water.

Is Waterdrop as good as Berkey? ›

All the three products are excellent household water filtration solutions offering similar capabilities. However, the ultimate choice will depend on your preferences. For example, the King Tank's premium filtration performance, while Berkey offers you more selections.

What are the disadvantages of water filters? ›

The Cons of a Water Filtration System:
  • Speaking of cost, initial installation is more expensive than other filtration methods. ...
  • You can't pick and choose what gets filtered. ...
  • Fluoride and your teeth: If you choose a whole house water filtration system that removes ALL chemicals, you will also be removing fluoride.
Apr 12, 2019

Can you drink water after replacing water filter? ›

Flush the New Filter

This is not harmful to drink, but you probably don't want a glass of gray water or ice with black spots. To flush a new filter, run a gallon or two from the water dispenser, collecting the water in a pitcher. Discard the water or use it to water your plants.

Should I leave my water filter on all the time? ›

The Most Important Rule - Turn off your Water Filter before leaving home. The most important thing to do with your water filter if you are going away for an extended period of time is to turn it off before you leave.

Does Waterdrop filter remove arsenic? ›

All Waterdrop products can remove residual chlorine, odor and taste, common scale deposits, heavy metals, lead, chromium, arsenic, fluoride, organics, bacteria, etc.

What is the best water filter to remove hormones? ›

The Royal Berkey Water Filter is one of our best-sellers of the Berkey Water Filtration System. This can be used both inside the home or outdoors. With this gravity water filter, one is assured that his drinking water is free from hormones and other pharmaceutical contamination.

Does Waterdrop filter remove calcium? ›

Waterdrop Hose Water Filter with Hose Protector, Reduces Chlorine, Odor, Calcium, Improve Plants Health. Ideal for Gardening, Farming and Pets.

Why do you need to run water after changing filter? ›

Flushing your filter consists of running water through the newly installed filter to remove any loose particles. This helps prepare the filter for personal use.

At what pressure drop should the filters be changed? ›

A brand new filter should have a pressure drop of between 2 to 3″ w.c. (water column). Once the pressure drop exceeds 10 to 15″ w.c., the filter should be replaced or changed. Paper media filter elements are often considered disposable, but can be cleaned.

How do I know if my filter needs to be changed? ›

5 Signs Your Air Filter Needs to Be Replaced
  1. Dust and Dirt Around Vents. Dust and dirt collecting around AC vents may be caused by a clogged air filter. ...
  2. The Filter Looks Dirty or Clogged. ...
  3. Rise in Electricity Bill. ...
  4. It Takes Longer to Heat or Cool Your Home. ...
  5. The AC Unit Is Hot.
Oct 30, 2020

What is the average life of a water filter? ›

As a general rule, many water filters last anywhere from 6-12 months before they need to be replaced.

What happens if you don't change your water filter? ›

In general, not changing your water filter when it is time means that your water filter will stop working at optimum capacity, and eventually might stop doing its job altogether. In other words, it will stop your water treatment system from doing what it is designed to do.

Is higher TDS in water better? ›

Though an elevated TDS level can affect the taste of your water, it is not usually harmful to human health. However, readings above 500 ppm require further investigation for toxic particles and heavy metals, and readings above 1000 ppm are considered unsafe for human consumption.

Does high TDS affect water quality? ›

Higher levels of TDS can make water taste bitter, salty or brackish. However, levels of total dissolves solids affect animals much more than humans. In bodies of water, like rivers, higher levels of total dissolved solids often harm aquatic species.

Is 12 TDS safe for drinking water? ›

1. What is the best TDS level for drinking water? Ans: Generally, the TDS level between 50-150 is considered as the most suitable and acceptable. Ans: If the TDS level is about 1000 PPM, it is unsafe and unfit for human consumption.

Does Waterdrop remove minerals? ›

Because of its effectiveness, reverse osmosis technology strips even the good minerals from water. That means even while removing toxic water minerals. The technology also removes healthy minerals like calcium and magnesium.

Does Waterdrop filter out lead? ›

This standard offers over 50 contaminant reduction claims. Some of the most popular include: lead, Cryptosporidium, VOCs and chromium.

Is Waterdrop bubbly? ›

Each of us is different. So are our waterdrops. We've created flavours from sweet to herbal to match your mood and desires. A little or a lot of water, still or sparkling — it's all up to you.

How long do Waterdrop filters last? ›

Waterdrop NSF Certified Replacement Filters for ACF Faucet Filtration System, Reduces Chlorine, Taste and Odor, Last Up to 9 Months (Pack of 3)

How do you clean a Waterdrop lid? ›

→ Care: Not dishwasher safe. Hand wash only. I order this as a replacement lid to make my bottle a little bit more durable.

What is the error code E04 on a water filter? ›

A: The E04 error means the unit is not filled with enough water. Ensure that you have filled it up with water past the minimum line. Helpful?

Who is waterdrop competitor? ›

waterdrop.com's top 5 competitors in March 2023 are: brita.com, aqua-amore.com, harney.com, brita.co.uk, and more. According to Similarweb data of monthly visits, waterdrop.com's top competitor in March 2023 is brita.com with 316.9K visits.

What brand is similar to waterdrop? ›

Waterdrop's competitors and similar companies include Natural Factors, Vitafor, Nutrition & Sante and DSM Nutritional Products. Waterdrop is a company that provides natural ingredients for microdrinks. Natural Factors is a provider of nutritional products.

Who owns waterdrop? ›

Martin Donald Murray - Founder & CEO - waterdrop | LinkedIn.

Is Waterdrop a US company? ›

Waterdrop – an Austrian startup that has gone from zero to $100m in revenue across 12 countries in five years with dissolvable plant- and vitamin-packed sugar-free cubes ('micro-drinks') you can drop into tap water – plans to aggressively ramp up its US presence this year after raising €60m ($70m) in a series B round, ...

Is Waterdrop actually healthy? ›

Waterdrop seems to be a healthier choice than most commercial flavoring brands like MiO. Although it contains citric acid and some added vitamins that we consider unnecessary, it's free of highly questionable additives like artificial sweeteners and artificial flavors.

Does Waterdrop filter remove microplastics? ›


Filters heavy metals, chlorine, drug residues, estrogens and other coarse particles such as microplastics.

Is waterdrop made in China? ›


The MNR is made in China. In fact Waterdrop is very likely a Chinese company that has a few registered addresses in California and Colorado and ships products directly into Amazon.

Is waterdrop as good as Berkey? ›

All the three products are excellent household water filtration solutions offering similar capabilities. However, the ultimate choice will depend on your preferences. For example, the King Tank's premium filtration performance, while Berkey offers you more selections.

What country is Waterdrop from? ›

Waterdrop is an Austrian startup with a two-tiered mission: reducing the consumption of plastic bottles and avoiding unnecessarily long shipping routes. “It's pointless to load up trucks with bottles of water and ship them thousands of kilometers,” says founder Martin Murray.

Does Waterdrop have chemicals? ›

waterdrop® helps you drink more by adding the great taste of real fruit and plant extracts to your water, without any sugar or unnecessary chemical preservatives, artificial flavours or colourings.

How much sugar is in a Waterdrop? ›

waterdrop® is 100% sugar-free without sacrificing taste.

Do water filters get moldy? ›

One of the most recurring problems with water filters across all brands is the growth of mold and the constant combat of that.

Do water filters have bacteria? ›

Some water filters may also allow bacteria to multiply to great levels on the filter pads if they are not maintained regularly. In most circumstances domestic household water filters or ultra violet treatment systems will not make water safe in relation to amoeba unless you also disinfect with chlorine.

Does the brand of water filter matter? ›

Does Brand Of Water Filter Matter? The brand of water filter matters to some extent as you need to choose a brand that fits your brand of fridge. Many people believe this means they need to buy OEM filters - which for the uninitiated, stands for 'original equipment manufacturer'.


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