International professional society whose scope of interests and activities includes ecotoxicology, along with other environmental fields. Special interests include whole effluent toxicity, ecological risk assessment, contaminated soils, and fate and effect modeling.

Aims to advance the science of ecotoxicology as it relates to environmental protection and management. Defines ecotoxicology is a multidisciplinary field that deals with the interactions, transformation, fate and effects of natural and synthetic chemicals in the biosphere.