Boosting the Transition to Circular Economy in the Water Sector: Insights from EU Demonstration Case Studies covers a wide range of topics within the circular economy concept applied to the water sector, including water recovery and reuse, bioplastic and fertilizers from wastewater treatment, and new biocomposite materials from the water cycle. This book presents insights gained from recent EU projects reporting solutions, technologies, tools, and strategies to overcome the existing barriers hampering the circular economy transition process. This book combines practical and theoretical knowledge of the circular economy of the water sector, thus being useful for both researchers, professionals, and actors making local decisions. The book provides a holistic overview of the current status of the recent progress in resource recovery from wastewater treatment, including fundamental aspects and development of processes, as well as the needs of further research and industrialization. It gives special emphasis and discussion on green technologies for resource recovery from wastewater and bottlenecks regarding their applications. As a future green bioprocess, biogas production and waste minimization, opportunities, future perspectives, and research needs are also discussed.