Waterdrop G2 RO System — 7-Stage Tankless Under Sink, 400 GPD, 1:1 Drain

Premium water filtration for your kitchen

The Waterdrop G2 Reverse Osmosis System is a compact, tankless solution designed to live discreetly under your sink while delivering noticeably crisper drinking water. Its seven-stage filtration supports cleaner-tasting water without the bulk of a traditional tank setup.

Backed by NSF/ANSI 372 certification for lead-free materials, the G2 emphasizes safety and reliability. The composite filtration setup targets a range of common water concerns, and, according to the membrane technical manual, can reduce total dissolved solids and contaminants such as PFAS, PFOA, PFOS, vinyl chloride and monobutyl ether. This means you may experience a more consistent water profile for everyday use, from cooking to beverages.

Fast, efficient filtration

With a fast flow rate of up to 400 GPD, you can fill a glass in about 12 seconds. The system maintains a steady output, avoiding the sputter some RO units have. The 1:1 low drain ratio minimizes water waste, helping your household conserve water during daily filtration.

Tankless design for space and safety

Eliminating the storage tank frees up under-sink space and reduces the number of potential leak points. The compact, integrated design also contributes to a quieter operation and easier layout planning in smaller cabinets.

Integrated, easy to install and maintain

The G2 combines electrical and water circuitry in a single, airtight housing to minimize leakage risks. Filters twist and pull out in about 3 seconds, making maintenance quick. Installation typically takes less than 30 minutes. Note: an electrical outlet and drilled mounting holes are required for operation.

What you get and how to replace

• Waterdrop G2 RO system
• Two included replacement filters
• Mounting hardware and quick-start guide
• Replacement filter references: Waterdrop G2CF and Waterdrop G2MRO

Real-world benefits worth considering

Beyond the specs, users often notice a more consistent water experience for daily hydration, cooking, and beverages. The design emphasizes ease of use, space efficiency, and practical filtration without relying on promises—benefits you can evaluate in your own kitchen.