The steriliser is an apparatus intended for the disinfection of water and other liquids thanks to the ultraviolet rays that eliminate or, depending on the speed of passage of water in the treatment cell, reduce bacteria, viruses, algae and other micro-organisms dangerous to the health of people and animals. This process does not require any chemicals. Therefore, it does not alter the chemical-physical characteristics of the water. Drinking water treatment equipment per Ministerial Decree 25/12 and Ministerial Decree 174/04.