Gravity-driven water flow networks are a crucial method of delivering clean water to millions of people worldwide, and an essential agricultural tool. This book attempts to bridge the gap between fundamental fluid mechanics and applied and useful technology-based material in the various existing references on gravity-driven water networks. In particular, the topics have been chosen to add simplicity, a sound technical foundation and support too many of those confined. A benefit of the fundamentals approach is the production of original design graphs, formulas and computational algorithms for the correct, sustainable designs of single-and multiple-pipe gravity-driven water networks. Both theory and design are covered in this book, along with the analysis that must join the two. It is considerable challenge to span this range effectively. This book delivers an all-encompassing guide to designing these water networks, combining theory and case studies. It comprises design formulas for water flow in single or multiple uniform or non-uniform diameter pipe networks; case studies on how systems are built, used, and maintained; comprehensive coverage of pipe materials, pressure ratings and dimensions. It is a key resource both for working engineers and engineering students and instructors.