Aarhus Convention

The Aarhus Convention, formally the Convention on Access to Information, Public Participation in Decision-Making and Access to Justice in Environmental Matters, was adopted on 25 June 1998 in Aarhus, Denmark, under the auspices of the United Nations Economic Commission for Europe (UNECE). It entered into force on 30 October 2001.

The Convention is built on three "pillars":

• Access to information — public authorities must make environmental information available on request and proactively disseminate it.
• Public participation — the public must be given timely opportunities to participate in decisions on specific activities, plans, programmes, and policies affecting the environment.
• Access to justice — members of the public must be able to challenge decisions, acts, or omissions that breach environmental law or the Convention's own provisions before a court or independent body.

The Convention is notable in international law for explicitly linking human rights and environmental protection, and for granting rights directly to members of the public and NGOs rather than only to states. Its Article 1 frames these rights as contributing to the right of present and future generations to live in an environment adequate to health and well-being.

Compliance is monitored by the Aarhus Convention Compliance Committee (ACCC), a quasi-judicial body that uniquely allows members of the public to file communications alleging non-compliance by a Party. The European Union is a Party, and the Convention has been implemented in EU law through directives on environmental information and environmental impact assessment, as well as the Aarhus Regulation governing EU institutions.

A supplementary instrument, the Protocol on Pollutant Release and Transfer Registers (Kyiv Protocol), was adopted in 2003 to require Parties to maintain public PRTRs. The Convention has influenced negotiations elsewhere, notably the 2018 Escazú Agreement for Latin America and the Caribbean, which adapts the Aarhus model to that region.