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

The Waterdrop 17UB is an under-sink water filter designed for municipal tap water. It connects to a cold water line and supplies filtered water through its own faucet, which makes it a self-contained upgrade for a kitchen, bathroom, RV or office. Here is what its specs and standards mean.

Who it is designed for

Waterdrop says the system is specifically designed for municipal tap water and cold water only. It states that it is not suitable for well water or hot water. That is a key limit to read before buying, since untreated supplies can need different filtration.

Filtration and the standards behind it

Waterdrop says the system was tested by IAPMO against NSF/ANSI 42, which relates to chlorine, taste and odour. The brand adds that a Korean testing body (KC) found it reduced several volatile organic compounds, including chloroform, benzene, chlorobenzene, chloropicrin and styrene, and that a third-party lab tested lead reduction against NSF/ANSI 53. It also lists reduction of PFAS, PFOA and PFOS, and removal of sediment, rust and other large particles.

Standards apply to the specific model and conditions. Waterdrop invites readers to look up "WD-17UB" on the IAPMO website to check the certificate.

Material safety

The listing says the materials are BPA-free and lead-free and are certified by IAPMO against NSF/ANSI 372, a standard concerned with lead content in wetted materials. The carbon is made from natural coconut shells, and Waterdrop asks buyers to confirm they have no allergy to it.

Minerals and TDS meters

Waterdrop notes that a TDS meter is not a complete measure of water quality, because dissolved minerals such as calcium, potassium, sodium and magnesium count toward TDS. It says the system keeps those minerals, so TDS readings typically won't drop much. That is a normal difference between carbon-based filters and reverse osmosis.

Flow rate and clogging

The tested full flow rate is 0.75 gpm at 60 psi. Waterdrop says an upgraded 3/8-inch outlet supports 1.33 gpm. It also says the filter has a 20-times larger dirt adhesion area, which typically helps it hold more particles before the flow slows.

Installation

The system uses push-to-connect fittings and a twist-and-lock filter change without tools. A feed water adapter and a 3/8"-1/2" converter are included. It measures about 3.6 x 3.9 x 19.1 inches (9 x 10 x 49 cm) and weighs 3.9 lb (1.8 kg). The replacement filter is listed as WD-RF17. A lead-free brushed stainless steel faucet is included, and Waterdrop points to the WD-15UC-UF for sinks with an existing drinking faucet.

Who it suits

It suits people on a municipal supply who want a simple under-sink filter with its own faucet and no drain connection or electricity.

What to check before you buy

• Water source: municipal, cold water only, per the listing.
• Clearance: the unit is about 19 inches tall; allow room to change the filter.
• Faucet hole: the included faucet needs a hole in the sink or counter.
• Fittings: confirm the feed adapter matches your cold water line.
• Replacement filters: note WD-RF17 and the recommended interval.
• Allergy: the carbon is coconut-based.

The short version

• Under-sink filter for municipal, cold water supplies only.
• IAPMO-tested to NSF/ANSI 42 and 372; lead reduction tested to NSF/ANSI 53, per the brand.
• Tested flow of 0.75 gpm at 60 psi.
• Tool-free filter change, push-to-connect fittings, dedicated faucet included.
• Keeps dissolved minerals, so TDS readings typically stay similar.

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