The Hartinger Handbook of Wastewater Technology is a revised edition of the classic work. In the completely updated 3rd edition, all significant developments from the past 26 years have been taken into account. Seven authors, along with a new editor, have updated a wealth of content and added new topics and practical experiences: new equipment, technologies, and processes for wastewater treatment, electrical engineering for industrial wastewater treatment plants with control and regulation technology, communication systems and maintenance, a detailed description of the mathematical foundations of process calculation essential for precise plant planning, specific instructions for selecting the necessary processes, sizing the equipment, and organizing plant control, as well as the changed legal regulations according to EU directives.