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The first-to-market Reverse Osmosis system with heating function. Waterdrop K6 water filter system integrates water purification and heating, meets various temperature demands and breaks through a conventional under sink RO water purification mode; it has a high capacity of 600 GPD (gallons per day) and a high hot water flow rate of 0.4 gal/min (gallons per minute), meeting your demands for water purification and hot water.
Q: What is the coldest it will dispense?
A: Dear Sharon, Thank you very much for your inquiry. This machine can only distribute room-temperature water for the coldest water. Should you have any further questions, please let us know. Kind regards, Mia Customer Service Rep.
A: It has a tank and you can set the temperature you want
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The first-to-market Reverse Osmosis system with heating function. Waterdrop K6 water filter system integrates water purification and heating, meets various temperature demands and breaks through a conventional under sink RO water purification mode; it has a high capacity of 600 GPD (gallons per day) and a high hot water flow rate of 0.4 gal/min (gallons per minute), meeting your demands for water purification and hot water.

The Waterdrop KJ-600 is the first-to-market tankless reverse osmosis system with an instant hot water function, delivering both hot and cold purified water on demand. With adjustable temperatures from 104℉ to 203℉, it is ideal for coffee, tea, cooking, and daily use. Featuring 5-stage deep filtration with an RO membrane and carbon block, it effectively reduces TDS, PFAS, fluoride, heavy metals, salts, and other contaminants. The system provides 600 GPD fast flow with a 2:1 pure-to-drain ratio, saving water while ensuring efficiency. Its smart display faucet shows TDS levels, filter life, water temperature, and includes a child lock for safety, while built-in protections prevent overheating and ensure reliable performance.

The Waterdrop X16-Alkaline is a high-capacity tankless under sink reverse osmosis system delivering 1600 GPD fast flow with a 3:1 pure-to-drain ratio, certified by NSF/ANSI 42, 58, and 372 and tested by SGS to reduce harmful contaminants. Featuring 11-stage precision filtration with a reinforced 0.0001μm RO membrane, it effectively removes TDS, PFAS, chlorine, fluoride, arsenic, lead, and more, while its PCC mineralization technology infuses healthy minerals to balance pH to about 7.5 for smoother, alkaline water. The intelligent digital faucet displays real-time TDS, filter life, and supports precise water volume control, while the tankless design saves space and ensures easy installation. With energy-saving mode, sustainable packaging, and carbon-neutral certification, the X16 provides instant, safe, and eco-friendly hydration at peak performance.

3-Stage Whole House Water Filter System,Reduce Iron&Manganese,with Carbon &Sediment Filters,7-Stage Filtration,Reduce Lead,Chlorine,Odor,5 Micron WHF3T-FG,1" Inlet/Outlet