This book edition on "e;Wastewater Management and Technologies"e; brings together a wealth of expertise by the authors, who exemplify the wide range of options available-from nature-based solutions to different levels of technology-and the different experiences through case studies from around the world, with a particular focus on conditions in developing countries.The book is part of a book series (special editions) based on the publication of the book "e;Water and Wastewater Management"e;, published by Springer in 2022 (ISBN 978-3-030-9528-7). The part about "e;Wastewater Management and Technologies"e; edited in this book will be deepened with this first special edition in terms of technological topics.