Delta Faucet Water Filtration System DF520

The Delta DF520 is an integrated water filtration system that connects to the undersink cold water supply and routes filtered water through the existing Delta kitchen faucet rather than requiring a separate dedicated tap. In filter mode (activated by a toggle lever on the faucet), water passes through a 200-gallon NSF/ANSI 42-certified activated carbon block filter that reduces chlorine, chloramines, and associated taste and odor compounds before exiting the faucet spout. In standard mode, unfiltered water bypasses the filter for rinsing dishes, washing produce, and other non-drinking uses, extending filter life. The DF520 installation involves connecting the filter housing inline on the cold water supply line and routing the filter output to the faucet cold water inlet. Compatible with most Delta pull-down and pull-out kitchen faucet models. Filter replacement (Delta part FILT-SYS200) every 200 gallons or 3 months maintains performance.