Trafin OIL, a.s. holds an authorisation for the disposal and cleaning of used food oils and fats issued by the Regional Authority for the Moravian-Silesian Region, thus contributing to the ecological disposal of oil by further processing in the biofuel production chain from renewable sources. The project is focused on the processing of water audit according to the Methodology of evaluation of water use at company level. The aim of the comprehensive water audit is to identify the current state of water management and to obtain suggestions for improvement.