A mobile body disinfection apparatus includes a carrying structure rendered mobile by means of a plurality of wheels attached thereto, a waste collection vessel, a liquid disinfectant dispensing element operated by a photoelectric cell and/or by a dispensing timer control, a filling tank, a supply line to carry the liquid disinfectant from the tank to the dispensing element, a waste tank connected to said washbasin, a drainage line and a central command and control unit suitable to manage at least the liquid disinfectant dispensing operations. The supply line comprises, in turn, at least one pump and one filter suitable to guarantee the elimination of infective elements that might be present in the water coming from the water distribution network and to guarantee a filtering of the liquid disinfectant that might have been contaminated even after filling the apparatus.