The book "Internal water supply and sewerage systems . Design. Handbook" edited by Anatoly Mikhailovich Tugay, with the participation of V. D. Ivchenko and V. and . Kulik, is an indispensable resource for specialists in the design and operation of water supply and sanitation systems. This edition will be a real find for engineers, architects, students of specialized universities and everyone who is interested in modern technologies in the field of water supply. Internal water supply and sewerage systems are not just technical solutions, but the basis of a comfortable life in any building, whether it is a residential building, an office or a production facility. The book covers a wide range of topics ranging from design to system operation. The authors share their experience and knowledge, providing readers with up-to-date data on modern methods and technologies, as well as on the regulatory documents regulating this field. One of the key topics of the book is the design of water supply and sanitation systems, taking into account modern requirements for energy efficiency and ecology. In the face of growing environmental problems and the need for rational use of resources, this publication offers readers solutions that will help not only to ensure reliable water supply, but also to minimize the negative impact on the environment. This makes the book particularly relevant for those seeking to incorporate sustainable technologies into their practice. The book will be useful not only to professional engineers, but also to students who are just beginning their journey in this field. It contains many examples, diagrams and illustrations, which makes the material accessible and understandable even for beginners. Readers will be able to find practical recommendations on the choice of equipment, calculations and design of systems, which will help them in their future professional activities. The style of the authors is distinguished by clarity and logical presentation, which makes it easy to assimilate even the most complex concepts. Anatoly Mikhailovich Tugay, a well-known specialist in the field of engineering systems design, already has many publications and scientific works that have earned recognition in the professional environment. His experience and knowledge, as well as the contributions of other authors, make this book a reliable source of information. The topics raised in the book cover not only technical aspects, but also issues related to project management, interaction with customers and contractors. This makes the publication especially valuable for those who want not only to understand the technical details, but also to successfully manage projects in the field of water supply and sanitation. If you are looking for high-quality literature on the design of internal water supply and sewerage systems, then "Internal water supply and sewerage systems. Design. Guide" is what you need. This book will be your trusted assistant and guide in the world of engineering solutions, providing you with the necessary knowledge and skills to successfully work in this important and responsible field. Do not miss the opportunity to enrich your knowledge and improve your professional skills with this unique guide, which combines theory and practice, relevant data and the experience of leading specialists. Read, study and apply the knowledge gained in practice!