The environment has been exposed to a range of damaging contaminants from a wide variety of sources. Regulation of and legislation against offending parties has frequently been hampered because of the difficulty with cooperation among disparate disciplines in the natural, social and political sciences. This volume forms the conclusion of five years' collaboration among toxicologists, ecomists and lawyers in the understanding and solution of the problem of accumulative chemicals. As well as being a case study of the accumulation of pesticides in groundwater in one particular region (the European Union), the book forms a general study of the value of interdisciplinary approaches in environmental policy making. The volume will be a valuable resource for a broad group of academics and researchers in the area of environmental science and environmental policy.