Recent decades have seen pivotal changes in the management and protection of water resources, with human rights, environmental and water law each developing a strong interest in the conservation of fresh water. This surge in interest has meant that dispute settlement mechanisms, along with diplomatic tools, are becoming increasingly necessary for conflict resolution. This Handbook offers an analysis of the interaction between law and various forms of knowledge and expertise, ranging from economics to environmental and social sciences. Leading scholars examine general and specific water legal regimes and analyse the interplay between various disciplines in order to establish the extent to which law is informed by each.