To provide a unit and an apparatus for producing antibacterial water, which have enhanced energy efficiency and capacity to produce high flow rate of the water containing sterilizing and antibacterial components regardless of small-sized one without using a power source.

This antibacterial water producing unit has a power generator for generating induced electromotive force at an armature as a water wheel is rotated by the water current flowing in a water passage and at least one pair of electrodes for producing sterilizing and antibacterial components by electrode reaction. At least one electrode is directly electrically connected to a terminal extended from the armature.