The Environmental Contamination and Toxicology + ONE HEALTH (ECT+ ONE HEALTH) EMJM is a novel and innovative Joint European MSc programme focused on the understanding of the interactions between chemical pollution, climate change, living organisms (including human health) and ecosystems. The program aims to form students a wide and holistic perspective in a global scenario. Additionally, ECT+ ONE HEALTH aims to offer formation for the management of the risk posed for the health of humans and the environment by the use and disposal of chemicals in a scenario of global change. This master has been conceived by six leading universities in the field of ecotoxicology and environmental chemistry from five countries, University of Porto (UPO, Portugal), University of Pau et des Pays de l'Adour (UPPA, France), University of Bordeaux (UB, France), University of Liège (ULiege, Belgium), Norwegian University of Science and Technology (NTNU, Norway) and University of the Basque Country (EHU, Spain), with the priceless contribution of a global network of Associates. The program aims to foster a high education of excellence and include the professional career perspective among students. The scope is to become a postgraduate of excellence and reference in the disciplines of ecotoxicology and one health approach. In addition the program will form the students in transversal or soft skills related to United Nations Sustainable Developmental Goals. The multicultural environment and the gender and social equity, allow the enrolment of highly qualified students worldwide and educate in the context of the European Higher Education System.