The two-volume Handbook of Environmental Health has been a standard reference for over 23 years. The fourth edition continues to provide a basis for understanding the interactions between humans and the environment and how such interactions affect the health and welfare of individuals. Focusing on factors that are generally associated with the outdoor environment, Volume II discusses a variety of environmental issues, such as toxic air pollutants and air quality control, risk assessment, solid and hazardous waste problems and controls, safe drinking water problems and standards, on-site and public sewage problems and control, and much more.