
Waterdrop G2
Score: 88/100
VonWater 800GPD
Score: 92/100Rankings

The VonWater V2-800N is a high-capacity, tankless reverse osmosis system that delivers 800 GPD with a highly efficient 2:1 wastewater ratio. It features a compact design that saves space and NSF/ANSI 372 certification for safety, though it requires an electrical outlet and professional-grade installation. It is best suited for households with high water needs and limited cabinet space.

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.
| Attribute | ![]() | ![]() |
|---|---|---|
7 stagesbest | 7 stagesbest | |
400 gallons per day | 800 gallons per daybest | |
0 gallonsbest | 0 gallonsbest | |
10 countbest | 9 count | |
| ↓ lower better | 5.91 inches | 4.9 inchesbest |
| ↓ lower better | 13.98 inchesbest | 16.3 inches |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF/ANSI 372, FCC | NSF/ANSI 372, EPA, SGS, FCC |
Maintenance(1) | ||
Filter Lifespan (months) | 12-24 months | 6-24 months |
Design(2) | ||
System Width (inches) | 5.91 inches | 4.9 inches |
System Height (inches) | 13.98 inches | 16.3 inches |
Performance(4) | ||
Daily Production Rate (gallons per day) | 400 gallons per day | 800 gallons per day |
Wastewater Ratio | 1:1 | 2:1 |
Contaminants Removed (count) | 10 count | 9 count |
Feed Water Pressure (PSI) | PSI | 14.5-87 PSI |
Features(2) | ||
Remineralization | true | false |
Faucet Type | Brushed Nickel | Stainless Steel |


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.

Professional reviewers highlight the system's exceptional filtration efficiency combined with significant space optimization and the efficient 2:1 pure-to-drain ratio.
Users consistently praise the effective filtration performance, space efficiency, and easy filter maintenance, though some note the installation complexity.

