Waterdrop D6 Undersink Reverse Osmosis System

The D6 is tankless, which significantly reduces its footprint compared to traditional RO systems. You will need a space of at least 11.97 inches in height, but because it lacks a bulky storage tank, it leaves plenty of room for other under-sink essentials like cleaning supplies or a garbage disposal.

No, the 600 GPD (gallons per day) rating refers to the system's high-speed, on-demand filtration capability. Because it filters water instantly as you turn on the faucet, it eliminates the need for a storage tank and the risk of secondary pollution that can occur in stagnant tank water.

This ratio means that for every two cups of purified water produced, only one cup is sent to the drain. This is significantly more efficient than older RO systems, which often waste three to four cups of water for every cup purified, helping you conserve water and reduce waste.

The system is designed for a straightforward DIY installation that typically takes about 30 minutes. If you are comfortable with basic tools and standard plumbing connections, you should be able to install it without professional help.

The system features an integrated smart faucet with an electronic indicator that monitors water quality and filter life in real-time. It will alert you when a filter needs to be replaced, taking the guesswork out of maintenance.

It is designed to be incredibly simple. The twist-and-pull design allows you to replace the filters in about two seconds without needing any tools or having to shut off the main water supply.