This book is a comprehensive study of modern and traditional water supply systems. A water supply system is an interrelated compilation of sources, pipes, and hydraulic control elements delivering set water quantities at preferred pressures and water qualities. This book incorporates chosen topics on theory, review and realistic function models for water supply systems study, including, strategy for temporary analysis, sustainable management of local water supply systems, infrastructure asset administration, optimal pump preparation, demand improbability, errors in water meter measuring and indicators for water mains treatment.