This book presents the principles of water and wastewater treatment within a comprehensive and interdisciplinary framework, addressing both technical processes and broader environmental considerations. It explores how water resources are protected, managed, and restored in response to increasing demand and ecological pressures. The discussion highlights the scientific and engineering foundations of treatment systems, alongside the social and economic dimensions that influence their implementation and effectiveness. It also considers contemporary challenges, including regulatory requirements, technological advancements, and the need for sustainable approaches in both urban and rural contexts. Attention is given to water quality assessment, system design, and the integration of treatment practices with environmental management strategies. By combining technical knowledge with contextual understanding, the text offers a well-rounded perspective on modern water and wastewater management.

The book aims to equip readers with the knowledge and awareness required to understand treatment processes, evaluate system performance, and contribute to sustainable water management practices in professional and academic settings.