Description: An exploitation safety aspects of man-made objects, natural resources safety usage, information technology (IT) safety, as the main management tools of man-made and nature safety, was analysed. A structure of system security "object – IT" was developed. An hierarchical structure "water – man-made object ↔ water– human: ecology", was established, and a comprehensive system for drinking and technological water monitoring, was proposed. A methodological principles of IT security for management tasks was developed.
Keywords: man-made object, water, IT, emergency, system "object – IT", ecology, monitoring, methodology of IT security