Local Agenda 21, an agenda for the 21st Century, was an important agreement reached at the United Nations Global Conference on Environment and Development in Rio de Janeiro in 1992. This milestone agreement acknowledged that environmental care is most effective at a local level and that individuals and communities must be supported in caring for the environment.

It recognised that all sectors share responsibility for the environment and opportunities must be developed for them to work in co-operation and agreement and that this can be achieved by partnership of all stake holders, sharing ideas, information and resources, consultation and joint action.