US Patent 7186323 Electrolyzed water production system

An electrolytic ion-water production apparatus in which purified water without residual chlorine is electrolyzed to produce alkaline-ion water without any chloride smell of lime in use of the apparatus, and in which a mixture of purified water treated by a water purifier and tap water containing residual chlorine is electrolyzed to produce alkaline-ion water containing sodium hypochlorous acid (NaOCl) of low concentration and to retain the produced alkaline-ion water in an introduction passage for reliably preventing propagation of microbes.