This report presents abstracts of presentations from one of a continuing series of annual workshops on aquatic & environmental toxicology. Topics covered include Great Lakes science policy, source water protection, corridors & watersheds as management units, areas of concern related to environmental health, environmental effects monitoring, linking metal accumulation to effects, oil sands assessment, effects of municipal waste & pharmaceuticals and their detection, environmental impacts of freshwater aquaculture, aquatic ecotoxicity, in-vitro endpoints, molecular & genomic endpoints, impacts from metals & mining, terrestrial ecotoxicity, data quality objectives for aquatic toxicology, trend monitoring & data analysis, and the environmental impacts of lead fishing sinkers.