- [0.01 μm Ultra Filtration Membrane] The 0.01-micron uf membrane of this ultra-filtration undersink filtration system reduces 99.99% chlorine and effectively adsorb lead, fluoride, heavy metals, VOCs, and much more. This system is not designed for TDS removal.
- [Integrated Waterway] Waterdrop ultra-filtration undersink filtration system adopts the cutting edge integrated waterway to prevent water leakage, which allows you to replace the filters without cutting off the water supply and produces prime-quality purified water with zero waste-water.
- [Smart Indicating System] Smart indicating system allows you to check water quality and working mode with a glance. The electronic indicators on the front panel will notify you when to replace the filters by changing the color.
- [Easy Installation] Waterdrop ultra-filtration undersink filtration system is an innovative, all-in-one intelligent water purification system. In just a few minutes, the ultrafiltration inline filtration system can be installed completely.
- [Model] Same as WD-TSU-B, but in a different color. Click here to compare our undersink filtration systems.
Ultrafiltration Under Sink Water Filter System Waterdrop TSU-W
WD-TSU-W, 0.01μm Ultrafiltration Membrane, 3-Stage Filtration, Smart Panel, No Waste Water
Precio regular
$289.99
Precio de venta
$289.99
Precio regular
20% OFF CODE:
TSU
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Model number
WD-TSU-W / WD-TSU-B
Power Specification
4.5V AA battery * 3
System Size (L*W*H)
14.81” * 4.68” * 13.97”
Feed Water Temperature
41-100 °F / 5-38 °C
Feed Water Pressure
14.5-87 psi / 0.1-0.6 MPa
Waterdrop Under-Sink Ultra Filtration System achieves
great filtration performance. The innovative filter design allows the system to reduce
contaminants while retaining beneficial minerals, providing healthier and safer water for you
and your loved ones. With the superior Waterdrop ultrafiltration membrane, the system delivers
excellent filtration performance. With a pore size of 0.01 micron, the ultrafiltration membrane
can reduce harmful substances. Aside from the PP filter for large impurity removal, the carbon
block filter improves the taste and odor, ensuring delicious, safe drinking water. The system
does not require an undersink electricity supply, which means you do not have to worry about
your power supply under the kitchen cabinet. Therefore, you can drink clean and safe purified
water even in emergencies like a power blackout. Unlike other water filtration systems that
generate a lot of waste water, this ultra-filtration water filter system produces prime-quality
purified water with zero waste water.

PP/UF/CT Filter Life Indicator
- Real-time filter status indicating system
Filter Reset Button
- Touch to reset after filter replacement
Power Indicator
- Learn when to replace the battery
PP Filter
- To effectively reduce large impurities
UF Filter
- To effectively reduce harmful contaminants
CT Filter
- To create better-tasting water and enhance the overall drinking experience
Less undersink space
More room for storage
- The sleek and compact design saves a lot of undersink space and leaves more storage room available under your sink. Water is filtered and delivered immediately.


Integrated waterway
To prevent water leakage
- The system adopts a cutting-edge integrated waterway to prevent water leakage. This allows you to replace the filters without cutting off the water supply, thereby delivering a safe and secure water purification experience.
Easy installation
Designed for DIY
- Waterdrop Ultra Filtration System is an innovative, all-in-one intelligent water purification system. In just a few minutes, the system can be completely installed, and in just three seconds, the filter can be changed with a single twist-pull.


Superior
Ultrafiltration membrane
- With a pore size of
0.01 micron, this ultrafiltration membrane can reduce harmful substances. Bacteria, viruses, and other contaminants that are larger than 0.01 micron cannot pass through this membrane, resulting in excellent filtration performance.
Extended filter life
- The advanced filter design allows the system to perform with an extended service life of
24 months. This reduces the frequency of filter replacements and saves on maintenance costs.



Working mode at a glance
- By changing color, the electronic indicators on the front panel will notify you when it’s time to replace the filters. This ensures that you have safe, clean, and healthy purified water all day long!
Ideal for RV use

The system has an advanced UF membrane with a pore size of
0.01 micron. This means that any contaminants larger than 0.01 micron cannot pass through
this membrane. The result is excellent filtration performance. The system is ideal for RV
use; you can enjoy tasty drinking water that is clean, safe, and healthy throughout your
trip!

Unlike other water filtration systems that generate a lot of
waste water, this ultra filtration system produces prime-quality purified water with zero
waste water. Waterdrop understands the value of water in the fresh tank, and we are
dedicated to delivering purified water that is socially equitable, environmentally
sustainable, and economically beneficial.
What is the rated input water pressure of the ultrafiltration water filter
system?
The input pressure is rated for 14.5-87 psi / 0.1-0.6 MPa.
What is the feedwater temperature of this ultra-filtration undersink filtration
system?
The feed water temperature of this ultra-filtration undersink filtration
system is 41-100℉/ 5-38℃.
How to install the ultra-filtration undersink filtration system?
Step 1: Install the feed water adapter.
Step 2: Install the faucet.
Step 3: Install the batteries and place the system.
Step 4: Connect tubing.
Step 5: Start up the system.
You can get a detailed instruction and a user manual on the product page.
What size of the hole do I need to drill for the faucet of this ultrafiltration
system?
It's recommended to drill a hole of 1". If there's a reserved hole for the
soap dispenser on your countertop, you could use that to install this faucet directly.
Besides, we have included a sticker in the package, which could be used as
a reference while drilling the hole.
How often do I need to change the filter?
Does the ultra-filtration undersink filtration system produce waste-water?
Unlike other water filtration systems that generate a lot of waste-water,
Waterdrop ultrafiltration inline filtration system produces prime-quality purified water with zero waste
water. Waterdrop understands how valuable water in the fresh tank is, and we are dedicated to delivering
purified water that is socially equitable, environmentally sustainable, and economically beneficial.
Does the ultrafiltration undersink water filter system require a wall
plug?
The ultrafiltration water 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.
Do I need plumbing services to install the system?
No. Waterdrop ultrafiltration inline filtration system is 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.
What does this ultra-filtration undersink filtration system remove?
This 0.01-micron ultrafiltration membrane can reduce harmful substances
larger than 0.01-micron. Including 99.99% of chlorine, odor, and effectively adsorb lead, chloramine,
fluoride, heavy metals, VOCs. Besides, this system is not designed for TDS removal, It will retain
minerals such as potassium, calcium, sodium, and magnesium, which are beneficial for your health.
How does ultrafiltration membrane work?
UF membrane uses standard home water pressure to push water through a
semipermeable membrane and reduce any contaminants. Unlike reverse osmosis, ultrafiltration retains
minerals in the water, while filtering out bacteria, viruses, and parasites.
What is the difference between filtration and ultrafiltration?
The main difference between filtration and ultrafiltration is the pore
size of the membrane. With each different filtration process, a variety of elements get either blocked
or pass through with the water. The 0.01-micron uf membrane of Waterdrop ultra-filtration undersink
filtration system reduces 99.99% chlorine and effectively adsorb lead, chloramine, fluoride, heavy
metals, VOCs, and much more.
What are the differences between this ultrafiltration system(TSU) and the dual
carbon system(TSC)?
The main difference between TSC and TSU are:
Filtration accuracy: TSU 0.01μm / TSC 0.5μm
Different filter: TSC: 3 filters, PP+CS+CT / TSU: 3 filters, PP+UF+CT
The TSU can reduce the bacteria from the source water while the TSC
cannot.
What is the difference between ultrafiltration and reverse osmosis?
The ultrafiltration water filter system uses a hollow fiber membrane to
stop solid debris and microscopic contaminants. Ultrafiltration is a filter system, while reverse
osmosis is a process where molecules are separated. Waterdrop also provides a reverse osmosis water filter system if you need
it.
![]() TSU Ultrafiltration System |
![]() TSC Filtration System |
![]() G3 RO Filtration System |
|
Replacement Filters | TSPP/TSUF/TSCT | TSPP/TSCS/TSCT | N1CF/N2RO/N3CB |
---|---|---|---|
Micron Rating | 0.01μm | 0.5μm | 0.0001μm |
Removable Substances | Most of chlorine, taste and odor, lead, fluoride, heavy metals, VOCs and much more | Most of chlorine, odor, lead, mercury, fluoride, arsenic | Most contaminants including fluoride, TDS, limescale, bacteria, viruses and heavy metals |
Gallons Per Minute | 0.6 GPM | 0.6 GPM | 0.27 GPM |
Upgrade Filter Material | Ultra-Filtration membrane | × | Reverse osmosis (RO) membrane |
Reduce TDS | × | × | √ |
Dedicated Faucet | Ordinary faucet | Ordinary faucet | Smart faucet |

TSPP Filter Replacement for TSU-W 3-Stage Ultra-Filtration
Under Sink Water Filter System
- Compatible with Waterdrop WD-TSU filtration system
- 6 Months Lifetime WD-TSUF Filter for Ultra Filtration System
26.99
Total price: 26.99
Total price: 26.99

TSCT Filter Replacement for TSU-W 3-Stage Ultra-Filtration
Under Sink Water Filter System
- Compatible with Waterdrop WD-TSU filtration system
- 12 Months Lifetime WD-TSUF Filter for Ultra Filtration System
29.99
Total price: 29.99
Total price: 29.99

TSUF Filter Replacement for TSU-W 3-Stage Ultra-Filtration
Under Sink Water Filter System
- Compatible with Waterdrop WD-TSU filtration system
- 24 Months Lifetime WD-TSUF Filter for Ultra Filtration System
37.99
Total price: 37.99
Total price: 37.99