★★★★★
Does a fantastic job, easy to install, quality.
DT—December 16, 2025✓ Verified purchase
Fantastic water improvement. Easy install, perfect for a single source of fantastic water. Read more
Waterdrop
Waterdrop TSB-UF 0 01 m Ultra Filtration Under Sink Water Filter System 9 Layer Under Sink Water Filtration
$129.99$159.99
About this item
- 9-STAGE FILTER WITH ULTRAFILTRATION: Waterdrop under sink water filter TSB-UF features 0.01μm ultrafiltration membrane plus precise KDF and ion-exchange resin layers — effectively reducing chlorine, taste & odor, fluoride, heavy metals, rust, sediments, sand, silt, large particles, and more impurities. NOTE: DO NOT reduce TDS.
- DUAL-FAUCET CONVENIENCE: Get a fast, steady flow (11.5oz in 5 seconds) — from a lead-free, brushed stainless-steel faucet. One main tap handles daily washing, while a dedicated faucet enhances the flavor of coffee, tea, meals, and even your pet's drinking water.
- QUICK & EASY INSTALLATION: This under sink water filter can be installed in just 3 minutes, and its filters can be swapped in only 3 seconds.
- It works with both 1/2" and 3/8" tubing for effortless under-sink installation.
- HIGH-EFFICIENCY ADSORPTION SURFACE: Featuring a 20× larger accordion-style filtration surface for powerful adsorption and anti-clogging performance, this under sink water filtration system delivers consistently high filtration efficiency and longer service life.
- LONG-LASTING FILTER LIFESPAN: Enjoy up to 6 months on the PP pre-filter and up to 12 months on both the granular carbon and UF membranes.
- Before vacation, seal and refrigerate your filter (not freeze) to keep it fresh for up to 30 days. *Actual lifespan varies by local water quality and usage.
- ROBUST & SAFE STRUCTURE: Engineered for ultimate durability, Waterdrop under sink water filter withstands 400 PSI burst pressure, 100k+ pulse tests (150 PSI), and 300 PSI static pressure — ensuring crack-proof, leak-free operation.
- CANNOT FILTER WELL WATER: This system is designed for Municipal Tap Water. If using well water as the source, please make sure the feed water has been through a pre-filtration system. For the solution with a pre-filtration system, please search for WD-PFK.
- CANNOT FILTER HOT WATER:Only a cold-water source should be used to power the filter.
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Product details
| Brand | Waterdrop |
|---|---|
| Special Feature | 0.01μm Ultra-Filtration & Included a new faucet& 9-stage Under Sink Water Filter System, deep filtration to reduce silt, rust, cyst, residual chlorine, lead, heavy metals, No leaking or cracking with highly precised technique, Lifespan of up to 12 months, 3min installation, 3s replacement, Includes everything you need for installation See more |
| Product Dimensions | 12.9"L x 4.3"W x 12.4"H |
| Material | PP Membrane, Carbon Block, Ultrafiltration Membrane |
| Capacity | 8000 Gallons |
| Included Components | A Separate Faucet - Inlet&Outlet Hose ·3/8"–1/2" Convertor set ·Teflon tape |
| Package Information | Tube |
| Installation Type | Under Sink |
| Purification Method | retain beneficial minerals |
| Power Source | Manual (Water Pressure) |
Technical specifications
| brand | Waterdrop |
|---|---|
| special_feature | 0.01μm Ultra-Filtration & Included a new faucet& 9-stage Under Sink Water Filter System, deep filtration to reduce silt, rust, cyst, residual chlorine, lead, heavy metals, No leaking or cracking with highly precised technique, Lifespan of up to 12 months, 3min installation, 3s replacement, Includes everything you need for installation |
| product_dimensions | 12.9"L x 4.3"W x 12.4"H |
| package_information | Tube |
| installation_type | Under Sink |
| power_source | Manual (Water Pressure) |
| item_weight | 6.9 pounds |
| model_name | WD-TSB-UF |
| maximum_flow_rate | 11.5 Gallons Per Minute |
| supported_water_tds_level_maximum_ppm | 500 |
| manufacturer | Waterdrop |
| item_model_number | TSB-UF |
| date_first_available | April 23, 2021 |
| best_sellers_rank | #8,292 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Under-Sink & Countertop Filtration |
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Customer reviews
4.8145 ratings
Customers say
Customers find the water filter system easy to install and report that the water tastes great.
★★★★★
Replacing an old water system
pt—November 10, 2025✓ Verified purchase
Easy to install. Water tastes great. Replacing an old Moen system. Read more
★★★★★
A repeating buyer from overseas
Simon0087—December 20, 2025✓ Verified purchase
Tap water is getting worse in our area, regardless of we’re sitting at the largest fresh water lakes on earth. Algae growing in our coffee maker reservoir regardless I wash the reservoir thoroughly every other months, and only use filtered water from Brita water pitcher. So I decided to get Waterdrop water filter I bought for my mom’s apartment in Shanghai years ago. Never thought about that we will use this product in the US, but that’s the reality now. The contaminated water was a national news 10 years ago, but it seems the local officials didn’t learn a lesson. Anyway, I am glad Waterdrop expanded their footprint to the US, and now I can have a peace of mind to drink coffee and feed our dog with tap water. Installation is simple, no power is needed. The accessories came with a 3-way splitter so you don’t need to get an aftermarket splitter, the thread is standard imperial size so it really saves the hassle. I didn’t drill the holes under sink as what is suggested, I used transparent “permanent” hooks I bought a couple months ago to hang towels in the bathroom with the spacer came with the box to hang the filter. So far so good, and I am pretty sure the product Waterdrop sold in the US will have a better quality compared to the one I bought in China. After all, the one I bought for my mom last more than 10 years, and it’s still working. Just make sure replacing the filter based on the manufacturer’s recommendation. PP only last for 6 months, GC and UF can last for a year. If you have a large family like my colleagues, then you may consider to replace the filter earlier. Being an engineer long enough, I can guarantee that maintenance-free is only a myth, because it means time to replace. Read more
★★★★☆
Leaked - but repairable - Great customer service.
Lori—September 23, 2025✓ Verified purchase
Installed the product on a Friday night. In general it was an easy install. Until the unit leaked at one of the two fittings on the unit itself. Customer service had a prompt reply on a Saturday, which was great, however without the correct tool, knowledge, and skill set we would not have the desire to fix the O-ring that had slipped out of place, and would have likely returned the product. Otherwise seems nice. A nice quality faucet came with this model, very appreciated. UPDATE. After a few days of use I am likely this filter in spite of the prior problems. Fast flow rate. Great customer service. Read more
★★★★★
Easy and quick installation.
787angelo70—February 10, 2026✓ Verified purchase
The media could not be loaded. Very easy installation. Good tasting water after initial flushing. Read more
★★★★★
Filter system
60s man—January 25, 2026✓ Verified purchase
It's easy to hook up and works great, well worth the money. Read more
★★★★★
Delicious
Chris H—October 14, 2025✓ Verified purchase
Purchased this for our new-to-us motorhome because both of us are very sensitive to bad tasting water. Installation was easy, although the unit is larger (bulkier) IRL than the measurements imply. I made it fit, purchased a shark-bite adapter with valve for the pex, and the push connectors made everything smooth. Finished in time for our maiden voyage. The RV park water was urine-yellow and stinky, but the filtered water was clear and delicious! Score! Read more
★★★★★
Easy install. Great working product
Tendai Chitando—January 2, 2026✓ Verified purchase
Easy installation. Great working product. A plumber wanted to charge me $350 for installation and I said "Hell to the Nah" 😅. Install took me all of 10 minutes after watching a video on YouTube Read more
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