Waterdrop

Waterdrop Faucet Filter

Every replacement cartridge that fits the Waterdrop Faucet Filter, what each one is certified to remove, and whether the unit will go on your faucet at all.

Stainless body and a notably long-life cartridge, which is the main argument for it over the mass-market pair.

Long-life cartridgeStainless steel body

By Maggi Ferguson Founder and editor · Checked September 1, 2026

At a glance

Takes: 1 cartridge family
Ships with: Waterdrop Faucet Filter Cartridge
Cartridge life: 320 gallons (1211 L) · 6 months

Will it fit your faucet?

Read this before anything else. The cartridge choice is easy; whether the unit goes on your tap at all is not, and no adapter fixes the ones that do not.

Standard threaded faucet

A plain cylindrical spout whose aerator unscrews. This is what every faucet-mount filter is designed for, and adapters for the common thread sizes are usually in the box.

Fits

Pull-out or pull-down sprayer

The spout head detaches and pulls out on a hose. No faucet-mount filter fits these, and no adapter makes them fit — the head is not threaded for it and the hose will not carry the weight.

Will not fit

Wide or square spray head

A flattened or squared-off spout. The filter body needs a round threaded collar to clamp onto and there is nothing here to grip.

Will not fit

Touchless or sensor faucet

The sensor and the solenoid sit where the filter would go, and the added back-pressure upsets the flow control. Treat as incompatible.

Will not fit

Cartridges that fit the Waterdrop Faucet Filter

In recommended order: what it ships with first, then better-certified alternatives, then the third-party cartridges built to the same fitting.