Patent ID: 8252171

Claim:
A water purification and conditioning apparatus through which water to be treated flows comprising, in succession: a water inlet; a pretreatment filter unit, the pretreatment unit comprising a scale neutralizer; an ultraviolet light source; a first conductivity cell; a booster pump; a flow meter; a reverse osmosis unit comprising a grey water outlet; a second conductivity cell, wherein the first conductivity cell and the second conductivity cell produce output signals sent to an at least one control unit to indicate the purity of water leaving the reverse osmosis unit through a purified water outlet; a deionization unit; a third conductivity cell; a mineral injection unit comprising an inlet and an outlet; a fourth conductivity cell proximate the outlet of the mineral injection unit; a blending loop by-passing the mineral injection unit connected before the mineral injection unit inlet and before the fourth conductivity cell, the blending loop comprising a blending valve, and wherein the third conductivity cell produces an output signal sent to the at least one control unit to indicate purity of water leaving the deionization unit, and the fourth conductivity cell produces an output signal sent to the at least one control unit to indicate dissolved mineral concentration, the output signals of the third and fourth conductivity cells capable of being compared by the at least one control unit and dissolved mineral concentration adjusted by the at least one control unit through the blending valve; a fifth conductivity cell; a water enhancing unit; a sixth conductivity cell, wherein the fifth conductivity cell produces an output signal sent to the at least one control unit and the sixth conductivity cell produces a signal sent to the at least one control unit to indicate purity of the water leaving the apparatus; and a water outlet; wherein the apparatus is configured for integration into kitchen cabinetry and under kitchen countertops.