This comprehensive course covers the complete lifecycle of used water management, from foundational characteristics and sewer network design to advanced treatment technologies and non-sewered FSSM solutions. It emphasizes regulatory compliance, strict effluent standards, and robust operation and maintenance practices to ensure public health and infrastructure longevity. Central to the curriculum is the transition toward a circular economy, focusing on transforming wastewater into a valuable asset through treated water reuse and biosolid management. Ultimately, it equips learners with the technical and policy tools needed to design and manage climate-resilient Water Resource Recovery Facilities.