600GPD Under Sink Reverse Osmosis System - Waterdrop D6

The Waterdrop D6 is a 6-stage tankless under-sink reverse osmosis system delivering 600 gallons of purified water per day. Certified to NSF/ANSI 42, 53, 58 and 372, it reduces PFAS, lead, fluoride, arsenic, chlorine, nitrate, TDS and heavy metals through its RO membrane core. The space-saving tankless design eliminates the bulky storage tank and delivers fast water flow on demand. Smart filter life monitoring keeps maintenance on schedule. Replacement filters available: WD-D6RF.

Shipping rates are calculated at checkout based on weight and destination. Most orders ship within 1-3 business days directly from the manufacturer's warehouse; ground delivery typically takes 3-8 business days.

See our Shipping Policy for full rate and delivery details. Questions? Contact contact@reinwaterusa.com.

All under-sink water filtration systems sold by Rein Water USA include manufacturer warranty. Crystal Quest systems carry a limited warranty — see product listing for terms. Brondell systems include a 1-year limited warranty on parts and labor, excluding consumable filters.

To make a warranty claim, contact contact@reinwaterusa.com with your order number and proof of purchase.