This text provides a comprehensive introduction to using hydrotherapy as a means of promoting autonomy and social inclusion for individuals with disabilities. Reflecting the global transition from predominantly medical models of disability towards more inclusive and empowering approaches, the book presents the Four-Dimensional Model of Hydrotherapy - a conceptual framework that integrates physical functioning, sensory experience, positive identity development, and long-term well-being. With an evidence-based approach throughout, and informed by key hydrotherapy principles, the book synthesises current research across disability studies, rehabilitation sciences, and inclusive education. Structured case studies and applied examples illustrate how hydrotherapy can address challenges such as accessibility, staff training, and communication barriers, ensuring that interventions remain responsive across a range of settings. This book will be of particular interest to allied health professionals working in physiotherapy, occupational therapy, speech and language therapy, and beyond. By bridging theory and practice, it provides a valuable resource for delivering inclusive, person-centred hydrotherapy aligned with contemporary disability rights frameworks.