Waterdrop TSB 8-Layer Under-Sink Water Filter with Dedicated Faucet

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Product guide

Waterdrop TSB 8-Layer Under-Sink Water Filter with Dedicated Faucet

Layer: Waterdrop TSB is an under-sink filter system with a dedicated faucet, intended for cold municipal tap water. Its listing describes three filters and eight-stage filtration while also calling the system a three-stage model. It retains minerals and does not reduce TDS, so it is not a choice for buyers seeking lower TDS readings.

At a glance

Designed for cold municipal tap water, with a separate faucet for filtered water.
The listing describes three filters, eight-stage deep filtration and reduction claims for PFAS, PFOA/PFOS, chlorine and fluoride.
Claims include retaining beneficial minerals rather than reducing TDS.
Push-to-connect fittings and twist-and-lock filter replacements are presented as DIY-friendly features.

Price

$105.25Save 27%

Reference price: ~~$143.99~~

Price checked: Nov 14, 2026

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Often bought together

Waterdrop 2PPGCCT Replacement Filter for TSA & TSB, 1-Year Replacement Pack | Replacement for Waterdrop TSA & TSB 3-Stage Under Sink Water Filter System, 4-Pack (2 x 10PP, 1 x 10GC, 1 x 10CT)

$104.99

Pros and cons

Pros

Dedicated faucet keeps filtered drinking water separate from the original tap.
The claimed 8,000-gallon capacity and filter life of up to 18 months may reduce replacement frequency, subject to use and individual filter schedules.
Customers report easy installation and improved taste and water quality, though experiences with flow and leaks vary.

Cons

Not suitable for hot water and not intended for untreated well water.
Does not reduce TDS, which may not suit buyers seeking dissolved-solids reduction.

Technical specifications

14 specifications

Identity
Brand	Waterdrop
Model	WD-TSB-10-NC

Filtration and use
Installation type	Under Sink
Purification method	Activated Carbon
Filter capacity	8000 gallons
Filter life cycle	18 months
Power configuration	Mechanical Water Pressure
Water source and temperature	35 °F
Maximum flow rate	1.5 gpm
Operating pressure range	400 psi
Upper temperature rating	100 °F
Maximum supported TDS level	700

Dimensions and materials
Dimensions listed	12.9"L x 4.3"W x 12.4"H
Material listed	NSF/ANSI Approved Components

What to know before buying

Listing details to confirm

Listing details are inconsistent: it calls the system three-stage in one place and describes eight-stage deep filtration elsewhere. It lists a maximum flow rate of 1.5 gpm, while feature text gives 1.05 GPM for the system and separately says the faucet maximum is 1.45 gpm. The three filters have different stated lifespans of 6 months, 8–12 months and 12–18 months, so the general 18-month figure is not an interval for every filter. The operating-pressure entry is given as 400 psi without a range, and the product model is WD-TSB-10-NC while another model-number field says WD-TSB-10. Confirm the selected configuration and applicable specifications before purchase.

What’s in the box

Included

System ×1
Faucet ×1
3/8"–1/2" converter set ×1
Quick-connect fitting
Hose ×2

Who is it for?

A good fit for

Households with cold municipal tap water that want a dedicated filtered-water faucet.
Buyers who want a filter system that retains minerals and do not require TDS reduction.
DIY installers seeking push-to-connect fittings and twist-and-lock replacement filters.

Less suited to

People who need reverse-osmosis-style TDS reduction.
Homes intending to use hot water or untreated well water with this system.

Waterdrop TSB 8-Layer Under-Sink Water Filter with Dedicated Faucet · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 3,636 ratings

5 stars76%76%
4 stars10%10%
3 stars5%5%
2 stars2%2%
1 star7%7%

Customer feedback highlights easy installation, improved water taste and perceived water-quality improvement. Reports on pressure and flow are mixed, as are value perceptions, and customers describe both leak-free use and leakage concerns. These experiences matter for an under-sink system where household flow and connection setup affect day-to-day use. They do not establish a specific cause or guarantee the same results. Aggregate ratings are generally favorable but include a meaningful one-star share, so feedback is not uniformly positive.

Positive themes

Customers report easy installation.
Customers praise water taste and perceived water quality.

Mixed feedback

Reports of water pressure and flow vary.
Customers differ on whether the system is worth its price.
Some customers report leaks while others report no leakage.

Frequently asked questions

Does this filter reduce TDS?

No. The listing says it retains beneficial minerals and does not reduce TDS.

What water source is it intended for?

The listing describes cold municipal tap water. It says the system is not suitable for hot water or well water unless the well-water feed has been pre-filtered.

How many filtration stages does it have?

The listing is inconsistent. It calls the system three-stage in one feature and also claims eight-stage deep filtration. Check the selected listing for the applicable configuration.

How often do the filters need replacement?

The listing gives different lifespans for the three filters: 6 months, 8–12 months and 12–18 months. It also gives a general 18-month filter-life claim, which does not apply uniformly to every filter.