Physical activity is a very important factor in preserving the health and functional ability of people of all ages. The aim of this study was to collect and determine the information of the health risks which can be harmful for human health and to provide expert advices, methods and solutions to eliminate them. The survey was conducted in the indoor sports facility type where samples were taken (air, water, prints from surfaces) in some areas, on the sports equipment, at the ventilation system and the system of cold water. It is also carried out professional supervision of pest control (disinfection, disinsection and deratisation) and risk assessment for development of micro-organisms of the genus Legionella in warm and cold water system. Samples were analyzed in Teaching Institute of Public Health Primorsko-goranska County. The survey results indicate an increase in the number of aerobic mesophilic bacteria, yeasts and molds in the air. Other analyzed parameters in this health risk study were with low or none potential. To maintain health risk at low potential sports facilities in all segments must carry out regular maintenance of hygienic processes with the processes of self-control, as well as documentation of the procedures performed. Studies like this shows the possibility of a multidisciplinary approach for masters of sanitary engineers to control health risks that sports facilities indoor type can generate.