Express Water Alkaline UV
Score: 88/100
iSpring RCC7AK Black
Score: 88/100Rankings
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 iSpring RCC7AK-BLK is a 6-stage under-sink reverse osmosis system certified by NSF/ANSI 58 to remove up to 99% of over 1,000 contaminants. It features an alkaline remineralization stage that restores minerals and pH balance, producing bottled-water quality taste without requiring electricity. It is best suited for homeowners seeking superior drinking water quality with bottled-water taste.
| Attribute | | |
|---|---|---|
0.035 GPM | 0.052 GPMbest | |
— | 12 monthsbest | |
10 stagesbest | 6 stages | |
99.99 %best | 97.9 % | |
| ↓ lower better | 40 PSIbest | — |
| ↓ lower better | — | 0 micronsbest |
1 yearsbest | 1 yearsbest | |
| ↓ lower better | 19 inchesbest | 19 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Health & Safety(1) | ||
Certifications | NSF | NSF/ANSI 58 |
Installation & Compatibility(1) | ||
Installation Type | Under-sink | Under-Sink |
Filtration & Performance(4) | ||
Flow Rate (GPM) | 0.035 GPM | 0.052 GPM |
Filtration Stages (stages) | 10 stages | 6 stages |
TDS Reduction (%) | 99.99 % | 97.9 % |
Micron Rating (microns) | null microns | 0.0001 microns |
Maintenance & Warranty(1) | ||
Filter Lifespan (months) | null months | 12 months |
Dimensions & Build(3) | ||
Height (inches) | 19.0 inches | 19.00 inches |
Width (inches) | 14.0 inches | 16.0 inches |
Depth (inches) | 5.0 inches | 15.5 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.
