This military-developed text contains the second section of a four-part course to train environmental support specialists. Covered in the individual course blocks are operative principles of water treatment plants (principles of water treatment plants, the clarification process, water systems filters, chemical disinfection, taste and odor control, color control, fluoridation and defluoridation, water distribution systems, and internal corrosion and scale) and specialized water treatment (ion exchangers and controls, electrodialysis demineralization, specialized water treatment, distillation, and field water purification). This section contains both teacher and student materials. Printed instructor materials include lesson plans with an outline of teaching steps and a plan of instruction detailing the units of instruction, the duration of the lesson, objectives, and supportive materials needed. Among the student materials provided are two study guides containing objectives, assignments, text readings, and review questions; two workbooks containing exercises and lab work; and a manual on servicing ion exchangers. (MN)