The book builds on the knowledge from the first year of vocational school or training and covers the sanitary engineering curriculum for the following years of vocational school and training. Chapters one to ten logically divide and present sanitary technology into ten learning areas. Chapter eleven is designed as an interdisciplinary project. The main focus of the specialized textbook is on the subject of technology. Additionally, it includes the mathematical, drawing, and planning content relevant to each topic area. This allows for cross-disciplinary teaching. The learning areas conclude with a project that includes a solution, where the content from the respective subjects converges. Two additional project tasks to choose from serve to deepen and practice the learned material. The final chapter of the book presents a comprehensive project.