"Drawing on the experiences with water scarcity in California and Spain, Vanessa Casado Perez dispels the simplistic notion that water markets and centralized control are polar opposites. In fact. both require substantial government involvement in choosing their goals and specific features. This is a insightful book about an increasing critical issue in the context of climate change." Bruce Cain, Professor of Political Science at Stanford University and the Spence and Cleone Eccles Family Director of the Bill Lane Center for the American West.Water is both our simplest and most complex resource. In her comprehensive treatment of the subject Vanessa Casado-Perez develops a comprehensive economic approach that captures both the similarities and differences in water rights regimes, and applies them carefully to both Californian and Spanish water markets. This book should prove an indispensable resource to lawyers, economists, environmentalists and others concerned with this vital topic. Richard Epstein, Laurence A. Tisch Professor of Law at NYU School of Law, and Director, Classical Liberal Institute.