Environmental engineering is a discipline that focuses on sustainability with the natural cycles of the earth in conjunction with the built environment. The discipline is also concerned with the protection of human health from adverse effect and the mitigation of adverse effects on the environment from the human populace. This book is intended as a reference for the graduate level scholar on selected topics and environmental engineering. Topics encompassed in environmental engineering include treatment of water and wastewater, mitigation of environmental hazards, and sustainable practice. The book discusses the concepts and dimensions of environmental treatment, costs of poor environmental quality, the importance of sustainability in this highly competitive global economy, and environmental law. The text integrates concepts, methods, and historical context to give an overview of basic topics in environmental engineering. Also included is a glossary of terms in environmental engineering. This book fills a gap in the literature by providing a comprehensive overview of topics in the environmental engineering discipline.