Skip to product information

Waterdrop 600GPD Reverse Osmosis Water Filter System WD-D6


Regular price
Price: $399.00 USD
Regular price
List Price:
Sale price
Price: $399.00 USD
View Cart

Availability: 99 in stock

Most orders ship within 2-3 business days

This Deal Ends In:

00 Days
00 Hours
00 Minutes
00 Seconds

Tap Into The Fountain Of Youth – Upgrade Your Drinking Water

Whether you are looking for healthier, tastier drinking water or cleaner cooking/cleaning water, this reverse osmosis filter is a perfect fit. It is designed to produce over 600 gallons per day of cleaner, safer drinking water perfect for everything from coffee and tea to cooking and cleaning. The low 1.5:1 drain ratio also means it uses less than half the wastewater of traditional filtration systems--so not only will you save on your water bill, but you'll be helping Mother Earth too.

✅  EASY DIY INSTALLATION: Use the provided instructions for a simple 30-min install without any tools. Twist-and-pull to switch out filters in 3 seconds.
  REAL-TIME TDS DISPLAY: See the quality of your water right on the display panel of the faucet. Knowing the quality of your water has never been more clear and easy.
  FAST FLOW RATE: Churning out 600 gallons per day, the D6 is is powerhouse of water flow so you can fill your glass, coffee pot, or cook ware with the water you need quickly.
  VIRTUALLY ZERO MAINTENANCE: The compact filters offer excellent performance, extending the life of your filters to over six months!
✅  PREVENTS CONTAMINANT BUILDUP: The cross filtration method used in the RO System prevents bacteria and virus buildup.


Waterdrop D6 uses the most advanced 5-in-1 composite reverse osmosis membrane. This premium reverse osmosis filter is capable of reducing most of harmful contaminants from water, including TDS, lead, chlorine, salt, nitrates, PFAS, lead, sodium, chromium, benzene etc.

The Waterdrop 6 is a new generation of water purifier using nano filter membrane technology to ensure water purity, supporting instant cleaning, cooking, drinking and more for your everyday life. When you need water, just press the button, and in 8 seconds you can get a full glass of pure water, which is particularly useful for cooking and drinking. The hidden pump tank design not only saves space but also makes the machine aesthetically beautiful.

The advanced faucet of Waterdrop RO system is smart and stylish. The upgraded luxury LED screen displays real-time TDS (Total Dissolved Solids) level and the remaining life of the filter. Don't worry: The faucet and display are completely waterproof, so feel free to make a mess and splash at will.


The D6 system is designed for DIY installation within 30 minutes. The push-in replacement design allows you to replace the reverse osmosis filter in 3 seconds without moving the system or using any tools. Now that's convenient. Please note this system needs to be plugged into an electrical outlet. It is not recommended to connect to the refrigerator, nor is it is not recommended for using well water as source.

With a pore size of 0.0001 µm, this reverse osmosis filter performs better and lasts longer than typical RO membranes. Pour with confidence, knowing the membrane is effective at filtering out viruses, harmful chemicals, heavy metals, pesticides, and more.



Quieter than your running laptop, the D6 RO remains hidden and virtually silent under your sink. Tankless by design, most customers find it saves them 70% more space on average, leaving plenty of room for your bins, cleaning products, and recycling bags.

Our Waterdrop D6 RO leads the industry in hassle-free home water filtration. Our system has a self-flushing process that cleans the filters regularly and automatically, saving you time and effort. All seals have been improved, but just in case, the emergency water leakage protection notifies you if there is any leakage.




    Filter Type (Included with purchase) Replace Every


    12 Months


    Technical Specifications
    Model number WD-D6-B
    Total Filtration Capacity 1000 gallons
    System cover: BPA-free plastic
    Faucet: metal
    Filter model: WD-D6RF
    Filter materials: First PP cotton layer, activated carbon block layer, second PP cotton layer, RO membrane layer and post-activated carbon block layer.
    Power cord length 73 inches
    Product dimensions 15.98 x 5.98 x 11.97 inches
    Color Black
    Flow rate 600GPD
    Components Included System cover, smart digital faucet, feed water adapter, PE tubing*3(79”), drain saddle, lock clip, power adapter(main power cable 73”, faucet’s power cable 59”)



    What is new about the Waterdrop D6 RO water filter system? 

    The five-in-one composite filters in the Waterdrop D6 Water Filtration System combines multiple filtration technologies into one.
    The first PP cotton layer filters out sediment, rust, and other large particles.
    The activated carbon block layer reduces organic matter and chlorine.
    The second PP cotton layer further reduces suspended matter and other impurities.
    The reverse osmosis membrane layer has a filtration accuracy of 0.0001μm, which intercepts TDS, salt, nitrates, PFAS, lead, sodium, chromium, benzene, etc.
    The post-activated carbon block layer reduces taste and odor to improve the taste of water.

    What impurities can D6 RO water system remove?

    The FIST composite filter, specially adopting DOW RO membrane can conveniently reduce most of pollutants including TDS, lead, chlorine, salt, nitrates, PFAS, lead, sodium, chromium, benzene, etc. The filtration process also eliminates bad taste and odor, leaving you with clean and great-tasting drinking water.

    How to read the TDS? And why are there two numbers? 

    The faucet offers a real-time TDS display of your water quality at any point in time. The in-built LED and TDS sensors become active when the faucet is on. D6 reverse osmosis filter system has two TDS detectors, detecting TDS level before and after filtration respectively. It shows TDS level before filtration at first and then indicates TDS level after filtration two seconds later.

    Does this home reverse osmosis system fit in my under sink? 

    It’s of 15.98 x 5.98 x 11.97 inches size and is the smallest 600GPD RO system in the market. The D6 adopts a simple tankless design. It requires little space in your kitchen and can conveniently sit under your sink without obstructing your perfect kitchen interior.

    How do I install Waterdrop RO water filter system? 

    Along with a well-organized instruction manual, you can find a step-by-step RO water filter system installation video on the Waterdrop YouTube channel.
    How often do I need to change the filter?

    Filter use: 12 months or 1,000 gallons, whichever comes first.

    What is RO water filter system?

    Reverse osmosis (RO) is a water purification process that uses a partially permeable membrane to reduce ions, unwanted molecules and larger particles from drinking water. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side.

    Does this reverse osmosis water system reduce chromium?

    All of our reverse osmosis water filtration system are designed to reduce 94-99% of Chromium-6 in your water.

    How well does this RO water filter system reduce nitrates?

    All of our reverse osmosis water filter systems are designed to reduce 85-90% of Nitrates in your water.

    Does this RO water system remove chemicals used to soften water?

    This system will reduce chemicals in the water as well as sodium from a salt-based water softener.

    Can this filter be used as a reverse osmosis water system for whole home's water system?

    No. This RO water system is a point-of-use (i.e. at the faucet) water treatment system.

    Will this reverse osmosis filter system completely reduce fluoride? 

    All of our reverse osmosis water filtration systems are designed to reduce 94-99% of fluoride in your water.

    Is this reverse osmosis water filter system unit suitable for well water? 

    We do not recommend using well water as source for our RO systems.
    The reasons are as follows:
    1. Large particles.
    Compared to municipal tap water, the well water is rich of large particles, which will clog the filters easily, and shorten their lifetime significantly.Please note that the filters will still need to be replaced more frequently, even if you have added a pre-filtration system.
    2. Composition
    The well water has very complicated composition, and some of them (apart from the large particles) can cause the filter or internal valve to be clogged and prevent the RO system from normal performance.
    3. Water pressure
    The well water may not provide the feed water pressure that the RO system requires (14.5 psi min.). Furthermore, the water pressure will be even lower after passing through pre-filtration systems.

    Does this home reverse osmosis system require an under-sink electrical outlet?

    Since the system has the booster pump it will require an electrical outlet for the system to work. 

    Does this RO water filter system remove salt from my water softener? 

    Yes, the whole house reverse osmosis will reduce dissolved solids such as sodium or salt from your home's source water. 

    Does this reverse osmosis water filter system lower the pH of the water?

    Yes, this reverse osmosis filter system should or could reduce pH but it depends on the source water and the mineral content of the source water.

    Shipping & Returns

    As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 3-5 business days), we will process the charges and submit the order for shipment.

    Click here for detailed shipping and returns policy

    Cancellation Policy

    If you wish to cancel an order, please contact

    If you contact us within 24 hours of purchase: We can cancel the order for you at no additional cost. The cancellation may take up to 3 days, thank you for your patience and understanding.

    If the package is already shipped, we will issue a prepaid label and return your payment AFTER we have received the package from you. If you contact us after 24 hours of purchase: You need to bear the return fee if the package is already shipped (depends on our system, not the order status). The product has to be damage-free, packed in the packaging we sent to you, and with the original receipt of the purchase. We will return your payment AFTER we have received the package from you.

    Return Policy

    If you want to return the item, you need to bear the return fee yourself and pay 20% of the original order as a restocking fee. If you would like to return a product, please follow these guidelines: Reach out to for a Return Authorization. No returns will be honored without a Return Authorization. The package needs to come back with the original receipt of the purchase. The product has to be in the packaging we sent in the first place. The product has to be damage-free (not applicable for defective products), damage on the product will void the refund.

    We offer a 30-day return guarantee. Warranty will begin from the date the product is received. If a product grows defective during the warranty period due to a quality issue rather than your own breakage or misuse, we can accept a return, provide free repair service, or issue a new replacement.

    If you received a damaged / incorrect item and you want to file a claim, please email together with your order information and a picture of the damaged / incorrect product. We are eager to help.

    Refund Policy

    There are times when we may not have the product(s) that you choose in-stock or may face some issues with our inventory and quality check. In such cases, we may have to cancel your order. You will be intimated about it in advance so that you do not have to worry unnecessarily about your order. If you have purchased via online payment, then you will be refunded once our team confirms your request.

    After receiving your request or your packages, it may take up 3-10 business days to refund your money.


    Price Match

    We work very hard to ensure that we offer the absolute best prices online.  If you find another online store that offers a lower price then us within six months of your purchase date please let us know by contacting us and we will refund your original payment for the difference. We want you to feel confident that you are getting the absolute best price for the product you are ordering.  If you find that our own website has a lower price for the same item you have ordered within six months of your purchase date will refund the difference as well.

    To request your partial refund simply e-mail us a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.

    Our 100% Price Guarantee has some limitations:

    • You must purchase the item from our website before requesting your Price Match Guarantee
    • Promotions such as rebates and buy one, get one free offers are not eligible
    • The item must be in stock on the competitors website
    • The competitor must be an online store, they may not have a retail location
    • The website can not be a discounter or auction website (ie; eBay, overstock, etc..)
    • The competitor must be an Authorized Retailer of the product in question
    • The Price Match Guarantee includes the item price and the shipping charges, it excludes sales tax

    Customer Reviews

    Based on 10 reviews
    Water tastes so much better from this!

    Okay so this unit was a bit of a pain to put in due to my piping, not the fault of the unit, but I just had to make a few plumbing changes to be able to install this. Placing in the included spout was easy as I followed the directions. The directions included are thorough and pretty detailed. I did have to drill a hole in my sink for this and it comes with a sizer that makes it easy to do so. Also make sure you have an outlet under your sink to plug this in. My sink is a little older so my cabinets did not have outlets inside.

    After all of my plumbing issues to accommodate this, I am really happy with it. It is quiet, takes up little room under my cabinet due to its thin design, and my water tastes so much better. It is a little slower than I expected coming out of the included faucet but it doesnt bother me as I strictly use it for drinking water and not for cooking but I can see how it may frustrate others who use it for boiling water, etc.

    I like the simplicity of this in that it is small and only has one filter. The filter is also said to last longer than traditional units and should only need to be replaced once yearly. Of course that is dependent on how often you use the water from the filter. It is also nice to look at. The faucet matches my stainless appliances and has a digital display that show error messages and also the TDS reading. I am not the most savvy with water systems but I set it up without the use of a plumber and I can definitely tell a different in the taste of the water. It no longer tastes like I am drinking chlorine.

    Love this RO System!

    The Waterdrop unit isn't a big bulky tank taking up all of the space under the sink like many are. Although tankless, the unit has great filtering producing great-tasting water quickly while wasting less water. It has a huge (600 gallon per day) capacity although with a little less pressure than a tank. Its smart LED faucet shows me how pure the water is that is coming out. It takes a moment to get used to there being a couple of seconds of delay between turning it on and the water starting to flow (unlike the instant response from a tank RO) but it is no big deal and totally worth it if you want to avoid a bulky, wasteful tank RO.

    Shyam F
    Great buy. Right choice!!

    Installation was relatively easy. There was one step to put the lock on the tubes which was a little tricky. The locks were so small to quickly perform. The taste of water is great. No metal taste or color. Looks sleek, quiet and effective. Very happy with the purchase. I have recommended to many of my friends already.

    Waterdrop RO Reverse Osmosis Water Filtration System

    Easy to install. Water taste great. The compact size of the unit makes for reducing space needed to install. Mostly uses vertical space, the horizontal footprint is quite small for what it does. The pump isn't completely silent but is much quieter than I imagined it would be. I can barely hear it while the cabinet doors are closed, and it also only runs while the faucet is on.

    Great tasking water

    Fits wonderfully under the sink and the filtered water is excellent! The only down fall to this is the amount of water that goes down the drain vs a tank system where the water is stored for use.