Waterdrop TSB-ALK 8-Layer Under-Sink Filter with Faucet – PFAS, Fluoride & Chlorine Reduction

Experience cleaner-tasting water straight from your tap with Waterdrop's TSB-ALK 8-Layer Under-Sink Filter. Designed for cold municipal water and paired with a dedicated faucet, this system uses an eight-stage cartridge to reduce chlorine, odors, fluorides, heavy metals, rust, and sediment—while preserving minerals that influence flavor. The result is water that feels crisper and more refreshing as you pour, brew, or cook.

What you get

• 8-stage filtration combining KDF materials, ion-exchange resin, and an alkaline stage to enhance taste and clarity
• Mineral enrichment with calcium, magnesium, sodium, and potassium for a balanced flavor profile
• Long-lasting filters that can run up to 12 months under typical municipal-use conditions
• Easy installation with a twist-and-lock design and quick filter changes that don’t require a plumber
• Upgraded filtration area offering 20x more dirt adhesion for consistent performance

Important notes

• This system does not reduce total dissolved solids (TDS); it preserves beneficial minerals while filtering out the unwanted substances
• Only cold water from a municipal supply should be used; it is not suitable for hot water or well water
• If you rely on well water, consider a pre-filtration setup first (see WD-PFK options)

Replacement parts

• WD-10PP filter: look up B0CM8MHWNT
• WD-10GC filter: look up B0CM8KV1M9
• WD-10ALK filter: look up B0D1R69QQS

In real-world use, this under-sink system is ideal for households that want to reduce tastes and odors from tap water, enjoy a consistent pour for beverages, and minimize frequent filter changes, all while keeping minerals you may notice in every glass. While results vary with water quality and usage, many users find the flavor smoother and the faucet a convenient, dedicated source of filtered water.