The idea of producing a book on the activities of sence of bottom versus surface withdrawal all have microorganisms in reservoirs had its origins in an a bearing on microbial processes. In addition, res article published by the editor in ASM News (De ervoirs are often constructed in areas where there cember 1981, 47:527-531). Many individuals ex are few, if any, natural lakes . In this regard, reser pressed an interest in having the article expanded voirs are also often distinct from natural lakes, and into a book on this subject. Several people were that meteorologic, hydrologic, geo to the extent contacted and asked if they would be willing to logic, and edaphic factors make a difference, reser contribute chapters to the book. The interest dis voir microbiology will also be different. Finally, the played by many persons outside the area of reser creation of a new reservoir offers the sediment voir microbiology was encouraging, as was the in microbiologist a unique opportunity to view the spiration of the contributors themselves. We were transformation of terrestrial environments into subsequently approached by Dr. L. Harold Steven aquatic ecosystems.

This book emphasizes the occurrence of sublethal injury in the indicator and pathogenic bacteria commonly encountered in foods, water and feed and modifications of the currently recommended methods for the effective detection of these bacteria. Chapters include methods for recovering injured "classical" enteric pathogenic bacteria from foods and for recovering injured pathogenic organisms from animal food. Detection and significance of injured indicator and pathogenic bacteria in water are explained, as well as detection of injured sporeforming bacteria from foods. This volume is extremely useful for individuals in the academic institutions, industries, federal and state regulatory agencies, public health service and hospitals who are interested in effective detection of indicator and pathogenic bacteria in food and water.

A small but growing number of municipalities are augmenting their drinking water supplies with highly treated wastewater. But some professionals in the field argue that only the purest sources should be used for drinking water. Is potable reuse a viable application of reclaimed water? How can individual communities effectively evaluate potable reuse programs? How certain must "certain" be when it comes to drinking water safety? Issues in Potable Reuse provides the best available answers to these questions. Useful to scientists yet accessible to concerned lay readers, this book defines important terms in the debate and provides data, analysis, and examples of the experience of municipalities from San Diego to Tampa. The committee explores in detail the two major types of contaminants: Chemical contaminants. The committee discusses how to assess toxicity, reduce the input of contaminants, evaluate treatment options, manage the byproducts of disinfection and other issues. Microbial contaminants, including newly emerging waterborne pathogens. The book covers methods of detection, health consequences, treatment, and more. Issues in Potable Reuse reviews the results of six health effects studies at operational or proposed reuse projects. The committee discusses the utility of fish versus mammals in toxicology testing and covers issues in quality assurance.