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Enjoy greater peace of mind about the water you drink at home. The Aquifer double-cartridge water filtration system effectively reduces contaminants including lead, mercury, chlorine, and pharmaceuticals in your cold water — without compromising your faucet’s performance. While many other systems use coal-based media filters, the Aquifer filter uses ground-up coconut shells, making it more eco-friendly. Under-sink installation is fast and easy, and the compact Aquifer system fits alongside garbage disposals and household items stored below the sink.


  • 2-stage water filtration and absorption system
  • For use with any kitchen, bathroom, or beverage faucet
  • Recommended for use with the wellspring beverage and carafe kitchen faucets
  • Double cartridge system retains your faucet’s water flow rate with no performance drop-off
  • Eco-friendly coconut shell based carbon filter
  • Reduces chlorine taste and odor, chloramine, particulate class I, lead, asbestos, cyst, mercury, turbidity and select pharmaceuticals, see performance data sheet for individual contaminants and reduction performance
  • Includes K-77688 aquifer 2-pack replacement cartridge
  • Filter head automatically turns off the water supply when cartridge is removed
  • 1.70 GPM (gallons per minute) maximum flow rate at 60 PSI
  • Postage-paid recycling program for used cartridges to reduce solid waste to landfills
  • High-impact plastic construction
  • Under-sink installation
  • Quarter-turn twist cartridge for easy installation and replacement
  • For cold water use only


  • Brand: Kohler
  • Chlorine reduction (%): 99
  • Contaminants Filtered: Lead, Chlorine, Bacteria, Copper, Fluoride, Iron
  • Copper Reduction (%): 99
  • Ease of Install: Easy Install
  • Features: Twist and lock design
  • Filtration Method: Coconut Shell Carbon
  • Fluoride Reduction (%): 96
  • Includes: Filter
  • Lead reduction (%): 99
  • Maximum feed water pressure (psi): 60
  • Maximum feed water temperature (F): 100
  • Maximum filtered water flow (gallons per min.): 1.7
  • Minimum feed water pressure (psi): 60
  • Minimum feed water temperature (F): 0
  • Number of filters included: 2
  • Number of Stages: 1 Stage

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