FAQ

Catalog
Product-RO Systems
Q:
What is the difference between our RO systems?
T1
Q:
Does Waterdrop's RO system use scale inhibitors?
Yes. Like all RO systems in the industry, Waterdrop RO systems incorporate scale inhibitors to reduce scaling and prolong the lifespan of the RO membrane. This is a standard and necessary practice in reverse osmosis technology.
It is important to emphasize that the key factor is not simply whether a scale inhibitor is used, but how much is used. All Waterdrop RO systems maintain strict control over dosage, ensuring it remains within safe limits.
Our systems are certified by NSF/ANSI 53, a globally recognized standard that verifies the health and safety of products, including the safe use of additives such as scale inhibitors.
Q:
What is the 11-stage filtration system of the Waterdrop X Series?
The X Series uses an advanced 11-stage system to deliver safe, great-tasting drinking water:
(1) Mesh Filter Cotton – Blocks large particles like sand and rust.
(2) Origami Cotton – Increases filtration area for better fine-particle removal.
(3) Activated Carbon – Removes chlorine, odors, and organic matter.
(4) Scale Inhibitor – Prevents scale buildup, protecting the RO membrane.
(5) PP Cotton – Further filters out sediments and small particles.
(6) 0.0001μm RO Membrane – Removes 99.999% of heavy metals, bacteria, and viruses.
(7) Non-woven Fabric – Supports the RO membrane and filters fine impurities.
(8) Activated Carbon – Enhances taste and purity.
(9) Alkaline Layer – Adds minerals like calcium and magnesium.
(10) PP Cotton – Final filter for extra clarity.
(11) UV Sterilization – Kills remaining bacteria and viruses.
Q:
What are the heating functions of Waterdrop K6 and K19-H?
K6 offers two modes: room temperature (up to 100°F/38°C) and hot water (up to 203°F/95°C). The hot water temperature is adjustable from 104°F–203°F (40°C to 95°C), with 1℉ increments via the faucet knob.
K19-H has four preset temperatures:
25°C / 77°F – Room temp
45°C / 113°F – Ideal for baby formula
85°C / 185°F – Great for tea
95°C / 203°F – For coffee or instant meals
Q:
What contaminants can Waterdrop reverse osmosis water filter system reduce?
Waterdrop reverse osmosis water filter system adopts advanced composite filter technology. The composite filter can intercept most harmful contaminants.
(1)TDS, chlorine, taste and odor, chloramine, scale, turbidity.
(2)Carcinogens: chromium (hexavalent), chromium (trivalent), cadmium and cadmium compounds, ferric oxide.
(3)Heavy metals: lead, mercury, barium, copper, radium 226/228, aluminum.
(4)Micro organic contaminants: cysts.
(5)Inorganic pollutants: arsenic and inorganic arsenic compounds, fluoride.
(6)Organic pollutants: asbestos, benzene, formaldehyde, trichloromethane, chlordane, PFOA & PFOS, etc.
Q:
Is RO water bad for the health?
The RO does not make the water unhealthy in any way. Instead, the purification process may protect the body from many contaminants present in the water.
Q:
Can the reverse osmosis system be used for hard water?
Yes, but only up to 500 TDS/ppm of incoming source. Water that is harder than that can cause the filters or system to clog. In order to avoid this situation, you may need to install prefilter and a NOT salt based softener or scale inhibitor prior to the system.
Q:
Do I need plumbing services to install the reverse osmosis system?
No. Waterdrop RO systems are designed for DIY installation. You can install the system in 30 minutes. Simply refer to the instruction manual and instructional videos, or contact us by email, phone, or live chat.
This video explains how to install Waterdrop RO system.
Product-Countertop Filters
Q:
What kind of products are included in Waterdrop Countertop series?
Electric Water Filter Pitcher
Gravity Water Filter
Water Filter Pitcher & Dispenser
Waterdrop Filter Faucet
Coffee Water Filters
Waterdrop Replacement Pitcher water filter for Brita, Zerowater, PUR.
Waterdrop Replacement Faucet water filter for Brita, PUR, Culligan.
Q:
What is the difference between different Waterdrop Pitchers and Dispensers?

WD-PT-04 Water Filter Pitcher

WD-PT-05 Pitcher Filter for Home

WD-PT-07 Water Pitcher with Filter

MB-PT-08B Zero TDS water filter pitcher

WD-WFD-22L Water Filter Dispenser

Capacity 10 Cups 5 Cups 10 Cups 10 Cups 20 Cups
Filtration Performance 7-stage Filtration 7-stage Filtration 7-stage Filtration 0-TDS filtration 7-stage Filtration
ACF
TDS Reduction × × × ×
Design Natural Wooden Handle Ergonomic Handle Ergonomic Handle Ergonomic Handle Push-and-pull design
Capacity WD-PF-01A Plus WD-PF-01A Plus WD-PF-01A Plus ZR-017 WD-PF-01A Plus
Color White, Blue, Clear White, Pink, Green, Blue, Yellow Classic Blue, White, Blue Skyblue Black, Turquoise
Q:
What does Waterdrop Pitcher & Dispenser reduce from tap water?
All Waterdrop Pitcher and Dispenser filters are NSF 42 certified for the reduction of chlorine, taste and odor. It is also NSF 372 certified for lead-free material. Using 7-stage water filter technology, this water filter pitcher can effectively reduce arsenic, fluoride, lead, and other contaminants in water.
Q:
How do I prepare and change the filter in my Waterdrop Pitcher & Dispenser?
Step 1. Wash your hands, then remove filter from filter box.
Step 2. Please soak it in cold tap water for 10 minutes to remove bubbles before use to activate the filter and ensure the best filtration performance.
Step 3. Please hand wash the pitcher, dispenser, lid and reservoir with a mid detergent. Don’t put it in the dishwasher. Do not use abrasive cleaners rinse thoroughly with water.
Step 4. Install filter into reservoir. Press firmly to ensure a tight seal.
Step 5. Fill the reservoir with cold tap water. Discard the first two times filtered water.
Step 6. Press the button for 3 seconds until the blue light flashes to activate the indicator.Note: Repeat this step after each new filter replacement.
Q:
Why is my water filter pitcher filtering slowly?
Our filters usually take 10-15 mins to filter the reservoir of water in your pitcher. One common cause of slow filtering is high levels of sediment in tap water, such as sand or rust that could clog a filter; hardness like limescale, or a grain of carbon which is blocking the holes. If your water contains high levels of sediment, consider installing a prefiltration system, such as these ones. Also, you can try removing the filter, shake it thoroughly to move the granular carbon around, then put it back in the reservoir.
Q:
The lights don’t work on my Filter Life Indicator.
First of all, please try resetting the filter by pressing down the button 6 times in a row and then hold it for 5 seconds.
If you've been using the pitcher for around a year, it can be that the indicator battery is worn out and needs to be replaced.
If after these options, the light still doesn't turn on, please contact us to help you replace it.
Q:
What happens if my system has a leak?
One possible cause for an apparent leak may be overfilling. Water may overflow into or over the handle when you pour resulting in what appears to be a reservoir leak.
If the reason for the leakage appears to be due to the faulty product or damage, please contact our Support, so that we can address the issue accordingly. We offer a 30-days guarantee in case the product gets damaged.
Q:
How do I clean my Waterdrop Faucet Filter?
If your faucet system hasn’t been used for several days, wet and reactivate the system’s filter by running water through the filter for 30 seconds.
Q:
What is the light on the pitcher use for?
It is an conveniently visible reminder of filter replacement time. BLUE light on means that the filter is working well. When it turns RED and flashes, you need to get ready to replace the filter. If the light stays on RED for 5 seconds, it’s time to get the filter replaced soon.
Q:
I, What do I have in my package if I buy an electric pitcher?
If you have purchased our electric water filter pitcher series,you will get an electric pitcher, a filter,a charging cable.
It is important to note that we do not provide plugs.If the charging cable is missing in your package, please contact customer service and we will reissue it as soon as possible.
Undersink Water Filters
Q:
What kind of products are included in Waterdrop undersink series?
Waterdrop undersink series includes ultra-filtration system, dual carbon filter system to satisfy your high standard of life. Undersink water filter of three different plans, meeting different demands for your home and kitchen. Spin down sediment water filter pre-filters large contaminants, reducing the workload of your home appliances.
Q:
Do undersink ultrafiltration system and dual carbon system require wall plugs?
No. Both undersink ultra-filtration system and the dual carbon system does not require an undersink electricity supply, which means you do not have to worry about your power supply under the kitchen cabinet. The only thing you need is three 4.5V AA batteries. Therefore, you can drink clean and safe purified water even in emergencies like a power blackout.
Q:
What is the difference between undersink water filter plan A / B / C?
WD-UA is meant to be connected to your original kitchen faucet, has metal braided hoses of 3/8" and 1/2" connection.
WD-UB comes with a lead-free brushed stainless steel faucet. You can install the new faucet into the original faucet hole, or drill a 1” hole for it. The dedicated faucet and your original faucet will separate the filtered water from unfiltered one, which meets different daily water needs. The connection is 1/4" only.
WD-UC filters can be the replacements for most refrigerators. It’s time to replace your overpriced refrigerator filters so that you can enjoy better filtration performance, a longer service life, and a lower maintenance cost.
Q:
How do I install an undersink water filter?
Due to different types of our undersink products, the installation methods could also be different. Usually the needed accessories come with the product, you only need to read our buyer’s guide or watch the installation video on the product page. Most of our products are easy to install, some may only take a few minutes. If you still feel confused about the installation methods, please contact us to help you solve the issue via our support channels.
Product-Whole House
Q:
Does Waterdrop whole-house filtration products (such as 2-stage & 3-stage whole house filters) have NSF/ANSI 53 certification?
Waterdrop's whole-house filtration systems, including Dual Big Blue and Triple Big Blue, are certified to NSF/ANSI 372 for lead-free compliance, with up to 99% lead removal efficiency. These systems are designed for point-of-entry primary filtration, using materials such as PP cotton and activated carbon to reduce large particles, sediments, selected heavy metals, and organic contaminants.
Q:
Can these whole-house systems provide drinking water quality?
No, whole-house systems meet general usage water standards, not drinking water standards. For high-efficiency removal of heavy metals and safe drinking water, we recommend pairing with our RO systems, which are NSF/ANSI 53 certified and remove contaminants at up to 99.999% efficiency. For ultra-high purity needs, please use the RO systems.
Q:
What kind of products are included in Waterdrop Wholehouse series?
Smart Water Leak Detector
Waterdrop 3-Stage Whole House Water Filter System
Waterdrop 2-Stage Whole House Water Filter System
Reusable Whole House Spin Down Sediment Water Filter
Q:
How long do whole house water filters last?
The lifespan of a water filtration system for home can vary significantly depending on several factors:
Type of Water Filter: Different types of filters have different lifespans. For instance, sediment filters may need to be replaced every few months, while more advanced multi-stage filters could last longer.
Quality and Capacity of the Filter: Higher quality filters with larger capacities can last longer than basic models.
Water Quality: If your water has a high level of contaminants or sediment, filters will clog and need replacing more frequently.
Water Usage: The more water you use, the faster the filter will reach its filtering capacity and require replacement.

On average, here are some general guidelines for the lifespan of common types of whole house water filters:
Sediment Pre-Filters: Every 2-6 months.
Carbon Filters: Every 6-12 months.
Reverse Osmosis Membranes: Every 1-2 years.
Water Softeners and Conditioners: These can last several years but may require maintenance or resin replacement.

It’s important to follow the manufacturer’s recommendations for filter replacement to ensure the best performance of your water filtration system. Regular maintenance and timely replacement of filters are crucial for maintaining water quality and prolonging the life of the filtration system.

Related: Why Is It Essential To Change Your Water Filter?
Product-Skincare Filters
Q:
What kind of products are included in Waterdrop Wholehouse series?
Waterdrop Skincare Face Washer, BFC1
Waterdrop Skincare Water Softening System
Q:
How long does this filter last? How do I know when to replace it?
One filter typically lasts for 2 months or 320 gallons, whichever comes first. Mark the date you install your filter, and when the time comes, simply replace it. However, the actual lifespan may vary depending on your local water conditions. If you notice a decline in water quality, it might be time to replace the filter.
Q:
Can I install the water filter myself, or do I need a professional?
Yes, you can do it all by yourself with no need for professionals. Actually, replacing the filter is simple. Twist off the upper shell and remove the used filter. Then, screw in a new one.
Q:
What contaminants does the water filter remove?
By means of ultrafiltration and high-quality activated carbon fiber, this filter can reduce 97% of chlorine, 99.9% of bacteria, rust and more impurities, providing you with clean, pure water for daily washing needs.
Coorperation
Q:
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Q:
How to become Waterdrop dropshipper?
Dropshipping Program Get the products shipped directly to your customers frorm our warehouse. You do not need any capital or warehouse to start the business. Contact us: business@waterdropfilter.com
Q:
How to become our distributor?
Distribution Program Become our distributor to get the best price, priority to new products, and unlimited tech reports from us. Contact us: business@waterdropfilter.com