This comprehensive volume delves into the intricacies of delta ecosystems, focusing on the transition from contamination to conservation. It addresses the critical challenges faced by these unique environments and introduces innovative solutions essential for sustainable restoration practices. Central to the discussion is the strategic improvement of restoration infrastructure and methods, aimed at reducing environmental impact while enhancing ecological health. The book emphasizes an interdisciplinary approach, demonstrating how collaboration among civil engineers, environmental scientists, and conservation experts can lead to the development of more effective restoration projects. Globally, over 600 million people reside in delta regions. Human activities in these areas, including their supplying canals, rivers, and estuaries, exert significant pressure on the natural resources and habitat equilibrium of deltas, leading to resource degradation and threatening the livelihoods and lives of inhabitants. This book advocates for a sustainable future for deltas worldwide and the communities that depend on them. A significant part of the book is dedicated to exploring sustainable solutions and best practices in water management, such as optimizing water use efficiency, ensuring water quality, and implementing innovative techniques to reduce water consumption and prevent pollution. It also examines the potential for integrating new materials and technologies into restoration efforts, including bio filtration systems and renewable energy sources. By applying circular economy principles to waste management in restoration projects, the book underscores a commitment to comprehensive sustainability. The findings support the Sustainable Development Goals (SDGs) and Agenda 2030, providing guidance to countries with delta regions to preserve their natural resources for future generations.