bgtr4565677
Waterdrop G3P600 Reverse Osmosis System
The Waterdrop G2 is a 7-stage, NSF/ANSI 372 certified tankless reverse osmosis system delivering 400 GPD high-flow filtration with a 1:1 pure-to-drain ratio. Designed for easy under-sink installation, it removes TDS, PFAS, PFOA, PFOS, and more while saving space and reducing water waste by up to 300%.
We may earn a commission when you buy through this link, at no extra cost to you.
- Independently tested by our review team
- Price and availability checked against Amazon
About the Product

Key features
-
7-Stage Filtration System – Effectively reduces TDS, PFAS, PFOA, PFOS, vinyl chloride & more.
-
NSF/ANSI 372 Certified – Verified lead-free materials for safe daily drinking water.
-
400 GPD High-Flow Output – Fills a cup in 12 seconds with consistent, fast water flow.
-
1:1 Pure-to-Drain Ratio – Saves up to 300% more water than standard RO systems.
Expert Backed Review Summary
The Waterdrop G2 Reverse Osmosis System brings advanced 7-stage purification into a compact, tankless under-sink design. Certified by NSF/ANSI 372 for lead-free materials, it uses a composite filter structure to effectively reduce TDS, PFAS, PFOA, PFOS, vinyl chloride, monobutyl ether, and other contaminants for cleaner, safer drinking water. Delivering up to 400 GPD, it fills a cup of purified water in just 12 seconds—far faster and more stable than traditional RO systems. Its tankless design maximizes under-sink space, prevents secondary contamination, and integrates electrical and water circuits for safer, quieter, leak-resistant operation. With a highly efficient 1:1 pure-to-drain ratio, it cuts water waste by 300% compared to typical RO units. Installation takes under 30 minutes, and the twist-and-pull filters swap out in just three seconds. Two filters come included, making this system ready to use right out of the box.
Before you buy
FAQs
It can produce up to 600 gallons of filtered water per day.
No, it uses a space-saving tankless under-sink design.
The system features a 2:1 pure-to-drain water ratio.
Yes, it comes with a smart LED faucet for convenient water-quality monitoring.
Yes, it is listed as certified to NSF/ANSI 42, 53, 58, and 372 standards.