Culligan US-EZ-4 EZ-Change Undersink Drinking Water Filtration System with Dedicated Faucet, Premium 500 Gallon Filter Included Undersink water filtration system that includes a dedicated faucet that can be installed in most sinks providing cleaner filtered water for cooking or drinking EZ change replacement filter cartridge with quick connect fittings, just twist on and twist off The included RC-EZ-4 filter cartridge reduces: particulates class I, chloride, cyst and chloroform, MTBE and Mercury, lead, turbidity, Perfluorinated chemicals (PFOA & PFOS) and removes bad taste and odor from water The included RC-EZ-4 filter cartridge is tested and certified by NSF International to NSF/ANSI Standard 42 for the aesthetic reduction of Chlorine Taste and Odor, Chloramines and Nominal Particulate Class 1. Standard 53 for the reduction of Cysts, Mercury, lead, VOC, MTBE and Turbidity The included RC-EZ-4 cartridge can filter up to 500 gallons of water or can last for 6 months Includes: head assembly, RC-EZ-4 filter cartridge, lead-free faucet, 1/4" thick clear tubing, mounting hardware, cartridge change reminder sticker, faucet battery Head assembly fits replacement cartridges, RC-EZ-1, RC-EZ-3 and RC-EZ-4 Water flow rate from faucet, .5 gpm at 60 psi