Abstract: The invention relates to a method for electrochemical disinfection of water without addition of chemical products, by means of at least one cell, comprising an anode (1) and a cathode (2), contained in a housing (3), provided with inlet (4) and outlet means (5) for water. Said method is characterised in essentially comprising: a) circulating the water for disinfection in a laminar or quasi-laminar manner, in the space between the catalytic faces opposite the anode (1) and the cathode (2) of a given cell, b) using opposing catalytic faces with identical surfaces, c) supplying electrically each pair of anode and cathode by means of connections (1A) and (2A), arranged in opposition.