Olsson (industrial electrical engineering and automation, Lund University, Sweden) summarizes the state of the art of instrumentation, control, and automation (ICA) and its application in wastewater treatment systems. The economic benefits of different control and operation possibilities are quantified, and qualitative benefits, such as more challenging work for operators, are also described. Several full-scale examples of how ICA has improved economic efficiency, the ease of operation, and plant robustness are presented. The book emphasizes both unit process control and plant- wide operation. Readership for the book includes process engineers and designers, researchers, and students.