Legal mechanisms for the management, development and protection of water resources have evolved over the years and have reached unprecedented levels of complexity and sophistication. This phenomenon is largely in response to the global community’s sustainable development agenda, to the challenges and limitations imposed by climate variability, and to scientific and technological advances. Bringing together diverse experiences from across the world, this book analyses existing water law and governance solutions, their shortcomings, as well as developments and trends in the light of changing circumstances. The legal mechanisms examined range from international treaties, agreements and arrangements on cooperation over transboundary water resources, to the onset of novel issues arising out of technological advances, and from domestic regulation of water abstraction and groundwater management, to domestic regulation of the water industry. The articles in this book were originally published in the journal Water International, following the XIV and the XV World Water Congresses of the International Water Resources Association (IWRA), which were held in 2011 and in 2015, respectively.The chapters originally published in Water International.