Waterdrop G2
Score: 88/100
Aquasana SmartFlow
Score: 88/100Rankings
The Waterdrop G2 is a compact, tankless under-sink RO system delivering 400 GPD with an exceptional 1:1 wastewater ratio. It features a space-saving design and optional remineralization, making it ideal for homes with limited cabinet space. However, it requires an electrical outlet and is restricted to indoor use.
The Aquasana SmartFlow® Reverse Osmosis Water Filter System is a high-efficiency under-sink filtration unit that combines Claryum® technology with reverse osmosis to remove up to 99.99% of 90 contaminants. It features patented SmartFlow® technology to reduce water waste and extend filter life, along with a remineralization stage to improve pH balance and alkalinity. The system is best suited for health-conscious households seeking comprehensive contaminant removal and mineral-enriched water.
| Attribute | | |
|---|---|---|
7 stagesbest | 4 stages | |
400 gallons per daybest | 25.7 gallons per day | |
— | 96.4 percentbest | |
0 gallons | 2.5 gallonsbest | |
10 count | 90 countbest | |
| ↓ lower better | 5.91 inches | 4.5 inchesbest |
| ↓ lower better | 13.98 inches | 12.93 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF/ANSI 372, FCC | WQA Certified |
Storage(1) | ||
Storage Tank Capacity (gallons) | 0 gallons | 2.5 gallons |
General(1) | ||
Installation Type | Under Sink | Under-sink |
Maintenance(1) | ||
Filter Lifespan (months) | 12-24 months | months |
Design(2) | ||
System Width (inches) | 5.91 inches | 4.5 inches |
System Height (inches) | 13.98 inches | 12.93 inches |
Power(1) | ||
Power Requirement | true | false |
Performance(5) | ||
Filtration Stages (stages) | 7 stages | 4 stages |
Daily Production Rate (gallons per day) | 400 gallons per day | 25.7 gallons per day |
Wastewater Ratio | 1:1 | Low Waste |
Contaminants Removed (count) | 10 count | 90 count |
Feed Water Pressure (PSI) | PSI | 40-80 PSI |
Features(2) | ||
Faucet Type | Brushed Nickel | Dedicated Faucet |
Automatic Shutoff | true | |
Products in the top-left offer the best value (high score, low price).
Professional sources emphasize the system's efficiency and filtration effectiveness, highlighting the 400 GPD flow rate and 1:1 drain ratio as standout features.
The system maintains a 4.5-star rating, with common user praise focusing on fast water delivery, improved water quality, and the convenience of the space-saving design.
Expert reviewers highlight the Aquasana SmartFlow® system for offering one of the highest certified contaminant removal rates among reverse osmosis systems. The patented SmartFlow® technology is specifically praised for reducing water waste and extending filter life beyond average RO systems.
The search results provided do not contain specific consumer reviews or everyday user feedback regarding common praise or recurring complaints.
