TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System

Compact 3-Stage Ultra-Filtration System with 0.01 Micron Precision and Smart LED Monitoring

Full manufacturer title

Waterdrop TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System 0.01μm-With Brushed Nickel Faucet

Typical price

$133

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Waterdrop TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System 0.01μm-With Brushed Nickel Faucet image 1

Ravvy verdict

89.5 / 100

A top-tier choice for those who want ultra-fine filtration and a smart reminder system, provided they are comfortable drilling a dedicated faucet hole.

Best for: health-conscious homeowners wanting mineral-rich water without the waste of RO systems
Buy it if: You want ultra-fine 0.01 micron filtration stage.
Skip it if: You are households with high TDS levels or those requiring well water treatment.
Best alternative: CuZn UC-200 Under Sink Water Filter, NSF/ANSI 42 & 372, 5-Year Filter Life (homeowners seeking a low-maintenance, high-volume filtration solution without drilling new holes)

How it scores on what matters

Water Efficiency100.0
Filtration Depth95.0
Maintenance Ease88.0
Flow Performance85.0
Ease of Install82.0

Ravvy factor scores, 0 to 100, derived from specs, owner reviews and category norms.

What it is

The Waterdrop TSU system bridges the gap between basic carbon filters and bulky reverse osmosis units. By utilizing a 0.01-micron ultra-filtration membrane, it effectively removes microscopic contaminants like heavy metals and chlorine while retaining beneficial minerals that RO systems often strip away. The dedicated brushed nickel faucet provides a premium finish, while the slim profile ensures it fits comfortably alongside garbage disposals in tight cabinets. Maintenance is remarkably simple compared to traditional systems. The integrated smart panel uses light indicators to alert you when each of the three filters reaches the end of its life, removing the guesswork from filter swaps. Because it relies on mechanical water pressure, it operates silently without electricity and generates zero wastewater, making it an eco-friendly and cost-effective choice for modern kitchens.

Ravvy AI insight

While this system excels at removing fine particles and improving taste, it does not lower TDS readings. Buyers should use a chlorine or lead test kit rather than a TDS meter to verify performance, as the system intentionally leaves minerals in the water.

Generated from owner feedback, product specs, pricing, and retailer data. Last updated Aug 25, 2026.

What owners praise

Ultra-fine 0.01 micron filtration stage
Zero wastewater production for eco-friendly use
Smart LED lifespan reminders for each filter
Space-saving design fits narrow cabinets
Retains healthy minerals like calcium and magnesium
High 1.05 GPM flow rate for fast filling

What to know first

Requires drilling a hole in the countertop
Does not reduce Total Dissolved Solids (TDS)
PP filter requires frequent 6-month changes

Specifications

UPC: 840814171752 840814174432 840814187517
GTIN: 840814171752 840814174432 840814187517
Brand: Waterdrop
Capacity: 2200 gallons
Material: NSF/ANSI Approved Components
Brand Name: Waterdrop
Model Name: waterdrop_wd_tsu_w
Unit Count: 1 Count
Item Weight: 14 pounds
Part Number: ‎WD-TSU-W
Manufacturer: Waterdrop
Model Number: WD-TSU
Power Source: Mechanical Water Pressure
Material Type: NSF/ANSI Approved Components
Container Type: Box
Number of Items: 1
Special Feature: 0.01μm Ultra-Filtration, Space-Saving & Easy to Install, Smart Lifespan Reminder, Advanced Integrated Waterways Prevent Leakage See more
Filter Life Cycle: 24 months
Installation Type: Under Sink
Maximum Flow Rate: 1.05 gpm
Product Dimensions: 14.81"L x 4.68"W x 13.97"H
Included Components: Faucet, Tubing, Convertor
Package Information: Box
Purification Method: Ultra Filtration; Activated Carbon; Carbon Block
Warranty Description: 1 Year Manufacturer
LowerTemperature Range: 35 °F
Item Dimensions L x W x H: 14.81"L x 4.68"W x 13.97"H
Other Special Features of the Product: 0.01μm Ultra-Filtration, Space-Saving & Easy to Install, Smart Lifespan Reminder, Advanced Integrated Waterways Prevent Leakage
Supported Water TDS Level Maximum (PPM): 700

How to get the most out of it

Initial System Flush

After installation, run the faucet for at least 10 minutes. This clears any carbon fines and activates the UF membrane for optimal taste and flow.

Ownership tips

tip

Monitor the PP Filter

If you notice a drop in water pressure before 6 months, your sediment (PP) filter may be clogged. Replacing this early protects the more expensive UF membrane.

care

Battery Maintenance

The smart indicator panel is powered by small batteries. Check them once a year to ensure the LED reminders continue to function accurately.

Frequently asked questions

Does this system lower the TDS of my water?

No, this ultra-filtration system is designed to remove contaminants while keeping healthy minerals. Because minerals are solids, your TDS meter reading will remain similar to your tap water.

Do I need to plug this into an electrical outlet?

No, the TSU system operates entirely on your home's mechanical water pressure. The smart indicator lights are battery-powered, so no under-sink outlet is required.

Can I connect this to my existing kitchen faucet?

This specific model is designed to work with the included dedicated filtered water faucet. It requires a separate 7/8 inch hole in your countertop or sink for installation.

Is this system compatible with well water?

This system is specifically engineered for municipal tap water. Well water often contains larger particles or specific bacteria that may clog the 0.01 micron membrane too quickly.

Where can you buy the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System?

TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System is sold through Amazon, and Waterdrop also lists it through its own site and major retail partners. The buy link on this page goes straight to the current Amazon listing, which is where stock and pricing update most often.

How much does the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System cost?

The last price Ravvy recorded was $133. Retail pricing on water filtration moves with promotions and stock, so treat that figure as a reference point and check the live listing before you buy.

How do you get the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System for a cheaper price?

Three tactics work best: watch for holiday and seasonal sale events when water filtration discounts run deepest, compare the open box or renewed listing against new stock, and check whether Waterdrop is running a coupon or bundle. Adding the product to your Ravvy wishlist keeps it handy so you can revisit the listing when prices drop.

Is the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System in stock right now?

It was in stock at our last check. Availability on popular water filtration can change within hours, so the live listing is the source of truth.

Is the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System worth it?

Ravvy scores it 89.5 out of 100. The strongest argument for it is ultra-fine 0.01 micron filtration stage. The trade off to weigh is requires drilling a hole in the countertop.

Who should buy the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System?

It fits health-conscious homeowners wanting mineral-rich water without the waste of RO systems If that does not describe your situation, compare it with the other options in Water Filtration before committing.

What are the key specs of the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System?

UPC: 840814171752 840814174432 840814187517. ASIN: B086YH42QP. GTIN: 840814171752 840814174432 840814187517. Brand: Waterdrop.

What are good alternatives to the TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System?

Compare it against the other scored picks in Water Filtration on Ravvy. We rank every option in that group by the same criteria, so you can see which model wins on value, quality, and owner sentiment before you decide.

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