A innovative and energy efficient, low temperature, cost-effective and environmental friendly electrochemical process using sodium ion conducting NaSICON ceramic membrane to continually produce sodium hypochlorite from sea water and low purity, un-softened water and sodium chloride is proposed. Ceramatec's proprietary membranes exhibit high selectivity towards sodium ions over hydronium and alkali ions to give the process an inherent advantage over technologies relying on organic membranes and un-divided cell methods to make sodium hypochlorite. Undivided and Organic membrane technologies have performance limitations from fouling and limited selectivity; however the NaSICON membranes operate at greater than 90 % of sodium transport efficiency, better ion transfer selectivity and not prone to fouling.