WaterdropUA-5Y 5-Year Under Sink Water Filter System
An under-sink filter with a five-year cartridge and the broadest certification claim in the range.
$140
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Usability
Usability
Two things make the UA-5Y interesting. The first is the cartridge interval: five years, against six to twenty-four months across the rest of the range, which changes the running-cost arithmetic entirely. The second is the certification claim — NSF/ANSI 42, 53, 401 and 372, where 401 covers emerging contaminants such as pharmaceutical residues and is claimed by almost nothing else Waterdrop sells, and 53 is the health-effects standard that most of the range lacks. Stated reductions include chlorine, lead, PFOA and PFOS. It is not an RO system, so TDS stays where it is. On certified coverage per dollar it is arguably the strongest thing in this catalogue.
- Five-year cartridge interval, by far the longest in the range
- NSF/ANSI 42, 53, 401 and 372 claimed, the broadest coverage Waterdrop states
- 401 covers emerging contaminants including pharmaceutical residues
- Reduces lead, PFOA and PFOS
- Low running cost per year
- No TDS reduction as it is not reverse osmosis
- Certification is manufacturer-stated and not verified against a certifier listing here
- Single cartridge means no staged pre-filtration
- One-year warranty on a five-year consumable
The UA-5Y is an under-sink filter built around a cartridge rated for five years of service, and it carries the broadest NSF/ANSI certification claim of any Waterdrop product: 42, 53, 401 and 372.
Additional information
Specification: Waterdrop UA-5Y 5-Year Under Sink Water Filter System
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Questions answered from our data

Is Waterdrop a good brand?We list 29 Waterdrop products and score 29 of them. Their overall scores run from 5.0 to 7.6, with a median of 6.0, against a median of 5.7 for all 284 products we score.
How much does an under sink water filter cost?The 20 under sink water filters we list run from $50 to $499, with a median of $161.
Do water filters remove lead?120 of the 296 systems we list claim to reduce lead.
Do water filters remove PFAS?84 of the 296 systems we list claim to reduce PFAS.





