This book presents a comprehensive account of current research on the chemistry and toxicology of cadmium in natural waters. It deals with the sources, distribution and fate of cadmium in aquatic ecosystems, and with the biocycling and ecotoxicity of cadmium to materia and freshwater biota. A succinct review of the analytical chemistry of cadmium in natural waters is also included. The authors have endeavored to emphasize general principles rather than comprehensive documentation. This volume thus provides the scientific rationale needed in the continuing effort to establish water quality criteria and standards for cadmium. This volume provides the scientific rationale for the continuing effort to establish water quality criteria and standards for cadmium.