Building water-wise cities is a hot topic nowadays in both developed and developing countries. This is due to the limitation of the available water resources to meet the needs of fast urbanization and for urban liveability. This will be the first book to provide comprehensive insights into theoretical, systematic, and engineering aspects of water-wise cities with a broad coverage of global issues. The proposed book aims to (1) provide a theoretical framework of water-wise cities and the associated smart water systems including the key concepts and principles, (2) provide a brand-new thinking on the design and management of sustainable urban water systems of various scales toward paradigm shifting under the resource and environmental constraints, and (3) provide a technological perspective with successful examples of technology selection, integration, and optimization on the "fit-for-purpose" basis.

This book focuses on environmental engineering, and on wastewater treatment and reuse in particular, which is a vital aspect for countries and regions suffering from water shortages. It introduces a new water cycle management concept for designing water systems that mimic the hydrological cycle, where reclaimed water is produced, stored/regulated, supplied and used in a semi-natural manner so that its self-purification capacity and system efficiency can be maximized. To ensure safe water throughout the cycle, emphasis is placed on the control of ecological and pathogenic risks using a series of quality indices associated with bioassays and molecular biological analyses, as well as risk assessments focusing on protecting the environment and human health. Together with theoretical and technological discussions, a real case of a district water system for maximizing water circulation and reuse by means of a sophisticated water cycle is presented. This book introduces readers to essential new concepts and practices and illustrates the future perspectives offered by a new paradigm for design and safety control in the context of wastewater reuse systems.