This is the only book series devoted to explaining the full range of specialized areas required of water and wastewater plant operators. Each volume is designed to give operators the basic knowledge of a subject needed for certification, licensure, and improved job performance. Checkpoints, self-tests and a final examination with questions based on actual operator certification exams provide a practical review. All books are clearly illustrated with key ideas and highlighted points throughout Pumping: This text provides information on pump fundamentals and applications, and introduces preventive maintenance and troubleshooting for hydraulic pumps. It explains both centrifugal and positive-displacement pumps. It also covers common problem areas and corrective actions, such as how to maintain packing and mechanical seals.