Pentek WP-5 polypropylene string wound 5-micron pre-filter removes sediment, rust and other microscopic debris Pentek CFB-Plus10 Fibredyne 5-micron solid carbon block cartridge and 0.5 micron Pentek CBC-10 carbon block filter remove chlorine, chloramine, bad tastes and odors, pesticides and carcinogenic impurities Pentair TFC reverse osmosis membrane removes up to 99% of water contaminants like lead, nitrate, fluoride and mercury, even in high TDS water NSF-certified brushed nickel lead-free faucet Pentek GS-10RO granular activated in-line post-filter polishes the water to crystal clear perfection Constructed with FDA and NSF certified materials Easy to install kit includes water storage tank and pure water dispensing faucet Manufactured and tested in the USA