Written for undergraduate students of civil engineering and environmental engineering, this text provides a rigorous, state-of-the-art examination of modern water management. It demonstrates the functions of the water treatment process, rather than limiting the discussion to water or wastewater treatment. Both water and wastewater processes are covered, with the theory, practice and related topics of each presented. This edition includes material on standards, treatment processes, water use and development, as well as sewer design. Major revisions are reflected in many chapters and sections, and new problems and a clearer presentation are also featured.