The purpose of this water treatment field study training program is to: (1) develop new qualified water treatment plant operators; (2) expand the abilities of existing operators, permitting better service both to employers and public; and (3) prepare operators for civil service and certification examinations (examinations administered by state/professional associations which operators take to indicate a level of professional competence). This 10-chapter volume contains information on: what water treatment plant operators do; how to manage reservoirs and intake structures; how to operate and maintain coagulation, flocculation, sedimentation, and filtration water treatment processes; disinfection of water; procedures for controlling corrosion; techniques for identifying the causes of taste and odor problems and suggestions for correcting such problems; procedures for operating, maintaining, and administrating a water treatment plant; and basic laboratory procedures. Objectives, glossary, lessons, questions (with suggested answers), and test are provided for each chapter. Final examination (with answers), solving water treatment plant arithmetic problems, water abbreviations, complete glossary, and subject index are provided in an appendix. Program scope/sequence and instructions to participants in home-study courses are provided in the introduction. (JN)