Express Water Alkaline RO
Score: 78/100
iSpring RO800G
Score: 75/100Rankings
The Express Water 10-Stage RO System is a comprehensive under-sink filtration solution with alkaline remineralization and NSF 58 certification. It includes a 4-gallon tank to compensate for its slow flow rate, making it suitable for families. However, it requires adequate cabinet space and sufficient water pressure to operate effectively.
The iSpring RO800G is a tankless reverse osmosis under-sink water filtration system designed to deliver up to 800 gallons per day with a flow rate of 0.6 gallons per minute. It features a space-saving design that eliminates the need for a storage tank and offers a high water efficiency ratio of 2.5:1 pure to drain. The system is ideal for high-demand users needing rapid RO water such as large families, offices, or restaurants.
| Attribute | | |
|---|---|---|
10 stagesbest | 2 stages | |
100 gallons per day | 800 gallons per daybest | |
4 gallonsbest | 0 gallons | |
7 count | 10 countbest | |
6 monthsbest | — | |
| ↓ lower better | 5 inchesbest | 6.5 inches |
| ↓ lower better | 17 inchesbest | 17.75 inches |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF 58 | |
Storage(1) | ||
Storage Tank Capacity (gallons) | 4 gallons | 0 gallons |
General(1) | ||
Installation Type | Under Sink | Under-sink |
Maintenance(1) | ||
Filter Lifespan (months) | 6 months | months |
Design(2) | ||
System Width (inches) | 5 inches | 6.50 inches |
System Height (inches) | 17 inches | 17.75 inches |
Power(1) | ||
Power Requirement | false | true |
Performance(5) | ||
Filtration Stages (stages) | 10 stages | 2 stages |
Daily Production Rate (gallons per day) | 100 gallons per day | 800 gallons per day |
Wastewater Ratio | 2.5:1 | |
Contaminants Removed (count) | 7 count | 10+ count |
Feed Water Pressure (PSI) | 40-80 PSI | PSI |
Features(3) | ||
Remineralization | true | |
Faucet Type | Chrome | Dedicated Faucet |
Automatic Shutoff | true | |
Products in the top-left offer the best value (high score, low price).
Professional assessment highlights the Express Water system as a certified, comprehensive solution for residential drinking water, emphasizing the NSF 58 certification.
The product is marketed as a practical solution for families and well water users, with the 4-gallon tank specifically noted as addressing the slow flow rate.
Search results lack in-depth expert reviews from major testing sites like Wirecutter or Consumer Reports. However, retailer descriptions and YouTube installation guides highlight the system as a top-of-the-line solution, emphasizing its fast flow, high efficiency, and next-generation features.
Limited consumer feedback is available, with one Wayfair review rating the product 3 out of 5 stars, indicating middling satisfaction without specific details.
