
Frizzlife Under Sink Filter
Score: 85/100
Waterdrop 15UB
Score: 88/100Rankings

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.

The Frizzlife MK99 is a compact, NSF-certified under-sink filter that offers rapid installation and replacement with a high 2.0 GPM flow rate. It effectively removes lead, chlorine, and heavy metals while retaining beneficial minerals. Its main limitation is the inability to remove bacteria or viruses, making it less comprehensive than RO systems. It is best suited for households seeking affordable, easy-to-maintain filtration.
| Attribute | ![]() | ![]() |
|---|---|---|
2 gallons per minutebest | 0.75 gallons per minute | |
24 monthsbest | 24 monthsbest | |
2 | 3best | |
1,600 gallons | 19,000 gallonsbest | |
— | 1 yearsbest | |
| ↓ lower better | 13.5 inchesbest | 16.34 inches |
| ↓ lower better | 5 inches | 3.46 inchesbest |
| ↓ lower better | 5 inches | 3.66 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Value & Warranty(1) | ||
Warranty (years) | years | 1 years |
Dimensions & Fit(3) | ||
Height (inches) | 13.5 inches | 16.34 inches |
Width (inches) | 5 inches | 3.46 inches |
Depth (inches) | 5 inches | 3.66 inches |
Performance & Filtration(7) | ||
Certifications | NSF/ANSI 53 & 42 | NSF/ANSI 42, 53, 372; IAPMO |
Contaminants Removed | Lead, Chlorine, Chromium 6, Mercury, VOCs | PFAS, PFOA/PFOS, Lead, Chlorine, Heavy Metals, Sediment, Odor |
Flow Rate (gallons per minute) | 2.0 gallons per minute | 0.75 gallons per minute |
Filtration Stages | 2 | 3 |
Filter Capacity (gallons) | 1600 gallons | 19000 gallons |
Filtration Technology | Carbon Block | Multistage |
TDS Reduction (percent) | percent | false percent |
Features & Accessories(1) | ||
Included Faucet | true | |
Installation & Compatibility(2) | ||
Installation Type | Direct Connect | Under Sink, Push-to-Connect |
Operating Pressure (psi) | psi | 60 psi |

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

Professional reviewers and editors highlight the Frizzlife systems' NSF/ANSI 42 and 53 certifications as key indicators of safety and effectiveness for removing chlorine, lead, and other contaminants. The systems are praised for their high flow rates and compact, space-saving design, making them suitable for households seeking affordable, point-of-use filtration without the complexity of reverse osmosis.
Everyday users appreciate the ease of DIY installation and the convenience of quick filter replacements. The systems are viewed as a practical, affordable solution for improving tap water taste and safety, particularly for families wanting to remove chlorine and lead without professional plumbing assistance.




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.