Cross-disciplinary approaches to Global Environmental Health are essential to address environmental health threats within and beyond national boundaries, taking into account the links among health, environment and socio-economic development. The aim of this study is to present a cross-disciplinary approach where knowledge and findings from environmental epidemiology and social research are integrated in studying environmental health issues, focusing on environmental health inequities, public and environmental health literacy, and international scientific cooperation. In the case of contaminated sites, environmental epidemiology can contribute investigating the ultidimensionality of equity for sustainable development practices. These practices entail a better understanding of environmental contamination, health effects pathways and improved capacities of different stakeholders to identify policy options for environmental risk prevention, remediation and management that will foster informed participation in decisions influencing communities. International scientific cooperation frameworks adopting equity principles shared by scientific community, populations and decision-makers may be of valuable support to this task.