
Frizzlife Under Sink Filter
Score: 85/100
Waterdrop TSA
Score: 82/100Rankings

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.

The Waterdrop TSA is a compact, 8-stage under-sink filtration system designed to reduce over 100 contaminants while retaining beneficial minerals. It lacks TDS reduction capabilities and is limited to cold municipal water. It is best suited for renters or DIYers wanting a quick, low-maintenance upgrade for taste and safety.
| Attribute | ![]() | ![]() |
|---|---|---|
2 gallons per minutebest | 1 gallons per minute | |
24 monthsbest | 18 months | |
2 | 8best | |
1,600 gallonsbest | — | |
— | 1 yearsbest | |
| ↓ lower better | 13.5 inchesbest | 16.93 inches |
| ↓ lower better | 5 inchesbest | 6.65 inches |
| ↓ lower better | 5 inchesbest | 14.88 inches |
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 | 16.93 inches |
Width (inches) | 5 inches | 6.65 inches |
Depth (inches) | 5 inches | 14.88 inches |
Performance & Filtration(8) | ||
Certifications | NSF/ANSI 53 & 42 | NSF/ANSI 372 |
Contaminants Removed | Lead, Chlorine, Chromium 6, Mercury, VOCs | PFAS, Chlorine, Heavy Metals |
Flow Rate (gallons per minute) | 2.0 gallons per minute | 1 gallons per minute |
Filter Life (months) | 24 months | 18 months |
Filtration Stages | 2 | 8 |
Filter Capacity (gallons) | 1600 gallons | null gallons |
Filtration Technology | Carbon Block | Multi-Stage Carbon/KDF/Resin |
TDS Reduction (percent) | percent | 0 percent |
Features & Accessories(2) | ||
Included Faucet | false | |
Remineralization | true | false |
Installation & Compatibility(1) | ||
Operating Pressure (psi) | psi | 125 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 and editors praise the Waterdrop TSA for its compact design, quick installation, and comprehensive 8-stage filtration that targets harmful contaminants like PFAS and heavy metals.
Everyday users commonly praise the ease of installation and report significant improvements in water taste, with some finding the lack of TDS reduction limiting.