The book "Water preparation" by Boris Nikolaevich Frog, Alexander Pavlovich Levchenko and G. and . Nikoladze is a unique teaching aid that will become an indispensable assistant for students and specialists in the field of construction, especially in the specialty "Water Supply and Sewerage" This publication not only meets the requirements of university curricula, but also offers a deep immersion in topical issues of water treatment, which makes it relevant for practicing engineers and designers. The book focuses on key aspects of water treatment that cover the full range of processes needed to ensure quality water supply. The authors share their knowledge about physical, chemical and biological methods of water purification, as well as about modern technologies used in this field. The reader will be able to learn about the principles of operation of various installations and systems designed for water preparation, as well as about new approaches to solving problems related to water quality. The book will be of interest not only to students of technical universities, but also to practitioners working in the field of water supply and sanitation .. It is suitable for both novice engineers and experienced professionals seeking to update their knowledge of modern technologies and methods. The topics raised in the handbook are relevant for all those interested in ecology, sustainable development and efficient use of water resources. One of the main topics addressed in the book is the importance of quality water treatment for human health and ecosystems. The authors emphasize that clean water is not only a matter of comfort, but also safety. In today's world, where the problems of water pollution are becoming more acute, knowledge of water treatment methods is becoming necessary to ensure sustainable development and environmental protection. The style of the authors is characterized by accessibility and clarity of presentation, which makes it easy to assimilate complex technical concepts. They use examples from practice and relevant data, which makes the material alive and relevant. In addition, the book contains illustrations and diagrams that help to better understand the concepts and technologies presented. Boris Nikolayevich Frog and Alexander Pavlovich Levchenko are well-known experts in the field of water supply, who have extensive experience and scientific publications. G. and . Nikoladze is also an authority in his field, which gives added value to this tutorial. Their joint efforts made it possible to create a book that will become not only educational material, but also a reference book for all who work with water resources. If you are looking for a high-quality training manual on water treatment, which will help you understand complex issues and give practical recommendations, then “Water treatment” is exactly what you need. This book will be your reliable assistant in the study of water supply and sanitation, as well as open new horizons in understanding the importance of clean water for our future. Do not miss the opportunity to enrich your knowledge and skills with this unique publication!