Today we note a gradual interest and a growing awareness to the new role assigned to local authorities and their relation to sustainable development; and that, since the adoption of Agenda 21 by more than 170 countries who took part in the Earth Summit held in Rio in Brazil in 1992. This global planning document is presented as a set of action programs and an indicative plan for central and territorial governments, which aims to improve the indicators of sustainable development through the effective and efficient involvement of local authorities. However, this course depends on the degree of commitment of these entities.