Production system of electrolyzed water

A production system of electrolyzed water of the type which includes a first brine tank arranged to store an amount of saturated brine, a second brine tank arranged to be supplied with the saturated brine from the first brine tank through an electrically operated pinch valve and fresh water from an external source of water through an electrically operated water supply valve for storing an amount of diluted brine, and an electrolyzer arranged to electrolyze the diluted brine supplied from the second brine tank for production of electrolyzed water. In the production system, there are provided a conductivity sensor for detecting conductivity of the diluted brine in the second brine tank, an ammeter for detecting a direct current applied to the electrolyzer, and an electric controller adapted to control the pinch valve in such a manner that the second brine tank is supplied with the saturated brine from the first brine tank when the conductivity of the diluted brine detected by the sensor becomes lower than a reference value and to correct the reference value in accordance with the direct current detected by the ammeter.