Lavishly illustrated with 98 full-color figures, this book describes waterborne microorganisms--bacteria, viruses, protists, and others--of concern to water operators, as well as techniques for isolation and detection, chemistry, and disinfection. This third edition includes new sections on advancing microbiology laboratories and effective data communication, color drawings to accompany genera descriptions, 30 additional photographs, and a new appendix on decontamination of new mains.