This volume is the only resource that describes and explains in simple, non-mathematical terms the unit processes used to treat both drinking water and wastewater. Designed to meet the information needs of professionals without an engineering background, the text presents each unit process, states what function(s) it performs, illustrates what equipment it uses, and explains what its role is in the process of purifying or cleaning water. In addition, the book places water treatment technologies in the context of overall plant operation. In addition, it explains related topics such as plant management and environmental regulations.