EZ-RO reverse osmosis system, EZ-RO 375/30ATM combines RO water & mineral-addition to produce up to 375 gpd; includes a 30-gallon atmospheric storage tank with electric repressurization pump, integrated prefilter, RO membrane, mineral-addition cartridge, operating pressure gauge and full system bypass valve. Includes installations kit with tubing, fittings and hardware for wall-mount, or can be free-standing with optional bracket. RO production is expandable to meet future requirements, NSF certified (EV997568)