Public participation in international environmental decision-making can seek to fulfil different goals. This article explains how these goals can affect the design and appraisal of participatory processes and highlights the under-recognised value of law in determining the objectives of public participation in international environmental forums. A doctrinal analysis finds that substantive goals are most prominent in current international environmental law, but that a normative rationale for public participation could be gaining more formal endorsement through the growing legal recognition of linkages between procedural human rights and environmental protection.

Since the Escazú Agreement entered into force in 2021, many have looked forward to the realization of its goal of further entrenching environmental democratic rights and enabling sustainable development in Latin America and the Caribbean (LAC) region. The severe environmental and related human rights challenges in the region have caught global attention, and the Agreement is most timely in its pursuit of contributing to addressing the situation. This article assesses the quality of, and the extent to which, the right of the public to participate in environmental decision-making processes under the Escazú Agreement can enable the regime to achieve its goal, and how best this right might be strengthened where necessary. This assessment is executed within the context of local peculiarities of the LAC region and good practice in the field, as reflected in the Aarhus Convention and the UNEP Bali Guidelines. The study finds that while aspects of the participatory right regime in the Escazú Agreement are sound – and align with or go beyond existing good practice – some key provisions require improvement in order to increase the effectiveness of the Agreement.