The book provides instruction and guidance on the evaluation and decision-making processes involved in the conception and realisation of water and wastewater engineering projects. It describes how requirements are assessed for both water supply and sewerage systems, how solutions are specified to meet those demands and how systems are designed, installed, operated and maintained in conformance with operational and environmental standards. The author not only covers engineering design, but also explains methods for financial analysis of project proposals, environmental impact assessment and the management of water projects. By developing a hypothetical case study with numerous worked examples, the author leads the reader through the process of project development. The book concludes with valuable advice on how to write and present effective engineering reports.