The Global Guidance for Life Cycle Impact Assessment Indicators 2 is aimed at life cycle assessment practitioners and method developers. It identifies the current best available practice in a variety of areas, including a chapter on assessing eutrophication, informed by our Eutrophication Product Footprinting project. Life cycle impact assessment approaches for the characterisation of eutrophication aim to trace the fate of a nutrient, the degree to which a sensitive environmental receptor is exposed, the effect of that exposure, and the severity of the effect. Chapter 3 of this international UNEP guide provides guidance towards consensus in modelling approaches and indicators that capture impacts from eutrophication of freshwater and marine systems. Produced by the Life Cycle Initiative of the UN Environment Programme.