
Waterdrop 15UB
Score: 88/100
Waterdrop UA-5Y
Score: 92/100Rankings

The Waterdrop UA-5Y is a compact under-sink filtration system featuring a 5-year filter lifespan and NSF/ANSI 372 certification for lead reduction. It offers easy, tool-free installation and effective removal of common contaminants like chlorine and microplastics. It is best suited for budget-conscious users seeking low-maintenance filtration in compact kitchen spaces.

The Waterdrop 15UB is a highly rated under-sink filter offering 2 years of filtration and strong certification against PFAS and lead. Its main limitation is the lack of TDS reduction and cold-water-only operation. It is best suited for renters and homeowners seeking a low-maintenance, high-capacity solution.
| Attribute | ![]() | ![]() |
|---|---|---|
0.75 gallons per minutebest | 0.75 gallons per minutebest | |
24 months | 60 monthsbest | |
3 | 5best | |
19,000 gallonsbest | — | |
1 years | 5 yearsbest | |
| ↓ lower better | 16.34 inchesbest | 16.7 inches |
| ↓ lower better | 3.46 inchesbest | 3.6 inches |
| ↓ lower better | 3.66 inchesbest | 3.9 inches |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Value & Warranty(1) | ||
Warranty (years) | 1 years | 5 years |
Dimensions & Fit(3) | ||
Height (inches) | 16.34 inches | 16.7 inches |
Width (inches) | 3.46 inches | 3.6 inches |
Depth (inches) | 3.66 inches | 3.9 inches |
Performance & Filtration(7) | ||
Certifications | NSF/ANSI 42, 53, 372; IAPMO | NSF/ANSI 372, IAPMO R&T Tested |
Contaminants Removed | PFAS, PFOA/PFOS, Lead, Chlorine, Heavy Metals, Sediment, Odor | Chlorine, Lead, Mercury, PFOA/PFOS, Microplastics, VOCs (partial), Taste/Odor |
Filter Life (months) | 24 months | 60 months |
Filtration Stages | 3 | 5 |
Filter Capacity (gallons) | 19000 gallons | gallons |
Filtration Technology | Multistage | Activated Carbon Block |
TDS Reduction (percent) | false percent | 0 percent |
Features & Accessories(1) | ||
Included Faucet | true | false |
Installation & Compatibility(2) | ||
Installation Type | Under Sink, Push-to-Connect | Under Sink |
Operating Pressure (psi) | 60 psi | 300 psi |


Products in the top-left offer the best value (high score, low price).

Professional reviewers recognize the Waterdrop 15UB for its certified safety and ease of use, highlighting the IAPMO certification and zero-leak performance.
Everyday users express strong satisfaction with the simplicity of installation, space-saving design, and noticeable improvement in water taste.

Professional reviewers view the Waterdrop UA-5Y as a reliable, durable option specifically suited for households prioritizing long-term convenience and ease of installation over maximum contaminant removal breadth.
General user sentiment is positive, with primary praise focused on the super quick installation, high water flow, and consistently clear and clean tasting water.
“Super quick installation”

“High flow”

“Clear and clean tasting water”


