Groundwater resources naturally contain rather high levels of arsenic in many parts of the world. During the last two decades, the As-containing groundwater in South-East Asia has received much attention. However, the situation seems to be equally important in Latin America, where the number of studies is still relatively low, and the extent and severity of As-exposure in the populations is only marginally evaluated. Following this lack, the book aims to improve the knowledge and understanding on the occurrence and genesis of As-rich groundwaters in Latin America. It deals with constraints on the mobility of As in groundwater, As-uptake from soil and water by plants, As-propagation through the food chain, human health impacts, and As-removal technologies. Case studies are presented from Argentina, Bolivia, Chile, Ecuador, El Salvador, Mexico, Nicaragua, Peru, and other Latin American countries, and are backed up by experiences from other world regions. is designed to: create interest within the Latin American countries affected by the presence of arseniferous aquifers, address the international scientific community, increase awareness among administrators, policy makers and company executives, and improve the international cooperation on that topic.