Waterdrop 17UB-UF Under Sink Filter: features, specs and who it suits

The Waterdrop 17UB-UF is an under-sink water filter that connects to a cold water line and delivers filtered water through its own faucet. It uses a 0.01 micron ultrafiltration membrane together with carbon filtration. Below, we explain what that means, how the system installs and what to confirm first.

What ultrafiltration adds

Ultrafiltration (UF) uses a membrane with extremely small pores, here rated at 0.01 μm, to hold back sediment and other particles. It is paired with an activated carbon block, which is the stage that typically handles chlorine, taste and odour. Waterdrop says the carbon is made from natural coconut shells and asks buyers to confirm they have no allergy to it. Unlike reverse osmosis, UF doesn't need a drain line or a booster pump, and it typically doesn't remove dissolved minerals.

Standards named in the listing

Waterdrop says third-party laboratory testing was done against NSF/ANSI 42, which covers chlorine, taste and odour, and NSF/ANSI 53, which covers lead reduction. It also states that the system reduces heavy metals, chemical impurities and sediment. Those are the brand's statements, so check the certification documents for the exact claims and conditions.

A larger filtering surface

The brand says the redesigned filter has a 20-times increase in dirt adhesion area, which is intended to improve filtration and lower the risk of clogging. In general, more surface means the filter can hold more particles before flow drops.

Flow rate and service life

Waterdrop lists a full flow rate of 0.75 gallons per minute at 60 psi. It says the system is developed for household and commercial use, including kitchens, RVs and offices. Filter life depends on your water, so follow the manual's change schedule. The replacement cartridge is listed as WD-RF17-UF.

The dedicated faucet

The system includes a lead-free brushed stainless steel faucet, so it is aimed at sinks that don't already have a separate drinking faucet. Waterdrop points to its WD-15UC-UF system for people who already have a separate drinking faucet.

Installation

Waterdrop says the system must be connected to a cold water supply only. It uses push-to-connect fittings and a twist-and-lock filter change that needs no tools. A feed water adapter and a 3/8"-1/2" converter fitting are included for common cold water lines. Space is the main constraint: Waterdrop notes at least 21.5 inches of vertical space under the sink is required. The unit itself measures about 3.9 x 3.6 x 19.1 inches (10 x 9 x 49 cm).

Who it suits

It suits households on a treated supply that want filtered water for drinking and cooking from a tidy under-sink unit without the drain connection RO systems need.

What to check before you buy

• Vertical clearance: at least 21.5 inches (about 55 cm) is listed.
• Water source: cold water only; check the manual for supply and pressure limits.
• Faucet hole: confirm your sink or counter has a hole for the included faucet.
• Plumbing: check that the supplied fittings match your cold water line.
• Replacement filters: note the model number and change interval.
• Coconut carbon: the listing asks buyers to check for allergy.

The short version

• Under-sink filter with a 0.01 μm ultrafiltration membrane and carbon block.
• Tested by a third-party lab against NSF/ANSI 42 and 53, per the brand.
• Rated flow of 0.75 gpm at 60 psi.
• Includes a lead-free stainless steel faucet and push-to-connect fittings.
• Needs at least 21.5 inches of vertical space.

Bloiq is reader-supported. Some links may earn us a commission; it never affects what we write. How we make money.