Water is a resource that triggers profound conflicts and close collaboration, a source of deep injustices, and fierce struggles for life. In many regions of the world, rising demand and declining availability of adequate-quality water foster severe competition and ferocious clashes among different water uses and users. People also suffer from flooding; contamination caused by industry and mining; privatization of public water utilities; corruption; and displacement by large dam projects. Climate change intensifies most human-made water problems. In struggles for water security, the poor tend to lose (e.g.