EZ-RO reverse osmosis system, EZ-RO 375/5G-BL combines RO water & mineral-addition followed by a precision blend valve for variable TDS adjustment to produce up to 375 gpd; operates at line pressure (non-electric) and includes a 5-gallon hydropneumatic storage tank, integrated prefilter, RO membrane, mineral-addition cartridge, TDS monitor, operating pressure gauge and full system bypass valve. Includes installations kit with tubing, fittings and hardware for wall-mount, or free-standing with optional bracket. RO production is expandable to meet future requirements, NSF certified (EV997564)