1 / 7Waterdrop WD-2P1U2C3 TST-UF Replacement Filter Pack
Pack: Waterdrop WD-2P1U2C3 is a four-filter replacement set for the TST-UF under-sink water filtration system. The set includes two WD-P1 filters, one WD-U2 ultrafiltration filter, and one WD-C3 carbon filter, covering the three filter types named for the system.
At a glance
- The listing describes compatibility with Waterdrop WD-TST-UF and identifies TST-B in a replacement-system highlight.
- The pack has four replacement filters: two WD-P1, one WD-U2, and one WD-C3.
- The listing says the PP filter reduces rust, sand, and large particles, the ultrafiltration membrane targets contaminants larger than 0.01 micron, and activated carbon reduces odor and taste.
Reference price: $117.64
Price checked: Nov 14, 2026
View offerAhead of Black FridayExplore the selectionOften bought together
Pros and cons
Pros
- Supplies all four filters identified for the three-stage system, including two PP prefilters.
- The listing describes filter replacement as unscrewing the external housing and changing the internal filter.
Technical specifications
9 specifications| Brand | Waterdrop |
|---|---|
| Model | WD-2P1U2C3 |
| Dimensions listed | 2.87"D x 2.87"W x 10.39"H |
|---|---|
| Weight listed | 0.8 kg |
| Material listed | NSF/ANSI Approved Components |
|---|---|
| External testing certification listed | IAPMO |
| Ultrafiltration membrane | 0.01 micron |
|---|---|
| Maximum flow rate claim | 1.59 GPM |
| Cup fill claim | 8oz cup of water in 2.3 seconds |
What to know before buying
Listing details to confirm
The listed flow rate and cup-fill time are manufacturer claims, not independent measurements. The stated one-year pack life is a title claim, and actual replacement timing is not specified here.
What’s in the box
Included- WD-P1 filters ×2
- WD-U2 filter ×1
- WD-C3 filter ×1
- User's manual ×1
Who is it for?
A good fit for
- Owners of a compatible Waterdrop WD-TST-UF system seeking its listed set of four replacement filters.
- Buyers who want a replacement set that includes PP, ultrafiltration, and activated-carbon filter types.
Less suited to
- Owners of systems other than the listed compatible Waterdrop model unless they have confirmed fit.
Customer reviews on Amazon
- 5 stars
85% 85% - 4 stars
8% 8% - 3 stars
3% 3% - 2 stars
0% 0% - 1 star
4% 4%
Customer feedback describes the set as working well and easy to install, with positive mentions of filter quality and functionality. That is relevant for buyers replacing the listed cartridge set, but it does not establish measured filtration or flow performance. Aggregate ratings skew strongly positive, though a small one-star share shows experiences are not uniformly favorable.
Positive themes
- Customer feedback highlights ease of installation.
- Feedback mentions filter quality and functionality positively.
Frequently asked questions
Which system is this replacement set listed for?
The listing identifies compatibility with the Waterdrop WD-TST-UF stainless-steel under-sink water filter. Confirm the exact system model before ordering.
What filters are included?
The stated contents are two WD-P1 filters, one WD-U2 filter, one WD-C3 filter, and one user's manual.
How does the listing describe the filter roles?
It describes the PP filter as reducing rust, sand, and large particles, the 0.01-micron ultrafiltration membrane as targeting larger contaminants, and activated carbon as reducing odor and taste.
How often should the filters be replaced?
The title calls this a one-year replacement pack, but the supplied details do not give individual cartridge replacement intervals or conditions.
Alternative options
Waterdrop WD-TSA-UF 0.01 μm Ultra Filtration Under Sink Water Filter System | 9 Stage Under Sink Water Filtration System, Reduces Chlorine, Taste and Odor, Fluoride, Connects Directly to Your Faucet
$111.99
AQUA CREST WF52 Water Filter Replacement for Aquasana® AQ-5300R, 3 Pack | Compatible with Aquasana® AQ-6300, AQ-C3-R 3-Stage Under Sink Water Filter, Reduces Chlorine, Bad Taste & Odor, Sediment
$41.39
Frizzlife Under Sink Water Filter System, NSF/ANSI 53&42&372 Certified, 8 Layer 0.5 Micron Water Filtration Reduces PFAS, PFOA/PFOS, Chloramine, Lead, Chlorine, with Brushed Nickel Faucet, SP99 New
$105.99
iSpring RO600ORB Tankless Reverse Osmosis System Under Sink, 600 GPD Fast Flow RO System, 2.5:1 Pure to Drain Ratio RO Water Filter System, Oil Rubbed Black Faucet, White
$381.99
iSpring US31 3-Stage Under Sink Water Filter System with Faucet, 1 Year | 10000 Gal, NSF/ANSI Certified Filters, Reduces Chlorine, Sediment, and Harmful Chemicals, SGS-Tested, 5–10 Years Housings
$72.00
iSpring RCC7-BN NSF Certified, High Capacity Under Sink 5-Stage Reverse Osmosis Water Filter, RO Drinking System, 75 GPD Brushed Nickel Faucet, Patented Top-Mounted Faucet Design for Easy Installation
$188.09
iSpring US31KF-NC 3-Stage Chloramine Removal Under-Sink Water Filter System | Reduces VOCs, Cloudiness, Bad Odor, NSF/ANSI Compliant, Direct Connect to Kitchen Faucet, 10-Year Reusable Housings, 10K-Gal
$114.49
LCF Filter Replacement for Waterdrop TST-UF & TST-B, 4 Filters, 1-Year Pack | 4 Filters: 2 x PP, 1 x CTO & 1 x UF; Replaces WD-P1, WD-C3 & WD-U2; Reduces 99% of Substances, Chlorine, Bad Taste & Odor
$89.96
Waterdrop T3-M Remineralization Reverse Osmosis Water Filter, 450 GPD | NSF/ANSI 372 Certified, 9-Stage Tankless RO System, Tankless RO Water Filtration System, 2:1 Pure to Drain, Plug-in Required
$279.99
LCF Filter Replacement for Waterdrop TST-UF/TST-B & LCF-DCT-PC, 3 Filters | 3 Filters: 2 x PP (LCF-DR-PP) + 1 x CTO (LCF-DR-CTO); Replaces WD-P1 & WD-C3; No UF; Reduces 99% Chlorine, Bad Taste & Odor
$64.97
Waterdrop UA-5Y 5-Year Under Sink Water Filter System, Ultra Long Life | Reduces Lead, Chlorine, Bad Taste & Odor, Water Filter for Sink Faucet Connects Directly to Your Faucet
$94.99
Waterdrop BG102 Mega Spin Down Sediment Filter, 50 + 100 Micron Filter | Upgraded Reusable Backwash Whole House Water Filter System for City/Well Water, 1" MNPT + 3/4" FNPT, BPA Free
$195.99
