
Express Water Alkaline UV
Score: 88/100
Waken Electric Countertop RO
Score: 82/100Rankings

The Express Water 100 GPD system is a multi-stage under-sink water filtration unit that integrates reverse osmosis, UV sterilization, and alkaline mineralization to remove up to 99.99% of contaminants. It offers comprehensive purification for large households, though the slow flow rate and space requirements are notable trade-offs. It is best suited for large households (8+ people) seeking comprehensive water purification.

The Waken Electric C11 is a countertop reverse osmosis water filtration system featuring an 8-stage filtration process with integrated UV sterilization technology. It operates as a plug-and-play unit requiring no plumbing installation, making it suitable for residential use in homes, apartments, and RVs. The system includes a 200 oz water tank and a digital display for monitoring water quality metrics. However, it requires electricity and produces wastewater, which are trade-offs for its convenience and advanced filtration.
| Attribute | ![]() | ![]() |
|---|---|---|
0.035 GPM | 0.29 GPMbest | |
— | 6 monthsbest | |
10 stagesbest | 8 stages | |
99.99 %best | 96 % | |
| ↓ lower better | 40 PSIbest | — |
| ↓ lower better | — | 4 ratiobest |
1 yearsbest | — | |
| ↓ lower better | 19 inches | 15.04 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Health & Safety(2) | ||
Certifications | NSF | NSF/ANSI 58, 372 |
Remineralization | true | false |
Installation & Compatibility(2) | ||
Installation Type | Under-sink | Countertop |
Operating Pressure (PSI) | 40 PSI | N/A PSI |
Filtration & Performance(6) | ||
Filtration Technology | Reverse Osmosis | RO + UV |
Flow Rate (GPM) | 0.035 GPM | 0.29 GPM |
Filtration Stages (stages) | 10 stages | 8 stages |
TDS Reduction (%) | 99.99 % | 96 % |
Micron Rating (microns) | null microns | N/A microns |
Pure to Drain Ratio (ratio) | null ratio | 4 ratio |
Maintenance & Warranty(2) | ||
Filter Lifespan (months) | null months | 6 months |
Warranty (years) | 1 years | N/A years |
Dimensions & Build(3) | ||
Height (inches) | 19.0 inches | 15.04 inches |
Width (inches) | 14.0 inches | 18.3 inches |
Depth (inches) | 5.0 inches | 7.28 inches |

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

Professional reviews are limited, but the product carries NSF certification for its reverse osmosis components, validating its contaminant reduction claims. The system is distinguished by its triple-technology approach, integrating UV sterilization and alkaline mineralization with standard RO filtration, placing it in the premium category for comprehensive purification.
Users generally rate the system highly, praising its ability to produce clean, great-tasting water and its comprehensive filtration capabilities. The automatic leak detection and easy installation are frequently highlighted positives.

“fresh water ready to go”



Users appreciate the straightforward operation, describing the system as producing fresh water ready to go with minimal effort. The digital display providing transparency about water quality metrics is valued by users monitoring their filtration system's performance. The portability makes it appealing for people in various living situations who cannot install permanent under-sink systems. There are no documented recurring user complaints or detailed negative feedback in the search results.