AWWA's Water System Operations (WSO) series is the leading operator certification training, aligned with current Association of Boards of Certification (ABC) Need-to-Know criteria and offering training based on experience and certification level. x000d WSO Water Distribution, GradesIand II, is organized into 22 chapters addressing core test content on certification exams. Chapters discuss regulations, operator math and chemistry, and specific distribution processes in detail. Other chapters cover water use and system design, water mains, hydrants and valves, water system supply security and public relations. Everything you need to know to pass your GradeIandII exam is included in this book. x000d To reinforce learning, the book includes full-color illustrations and links to video clips, as well as questions at the end of each chapter. x000d Key Features: x000d x000d Developed in accordance with current ABC criteria x000d Focused on specific experience and certification level x000d Includes additional study questions at the end of each chapter_x000d_ Refers to more than 100 videos for additional training