Encompassing electro-adsorption technology, Trident Three-Stage Water Filtration Systems employ ULTRA-D submicron filters to reduce contaminants in tap water. These point-of-entry systems address contaminants in all 4 areas: aesthetic, solids and metals, pathogens, and chemicals. First stage is ULTRA-D high-flow, submicron filter; second stage consists of ULTRA-D, PAC/Agion submicron filter; and third stage is 1 micron catalytic carbon block filter.