The aqueduct in the Linea de Occidente (Western Line), including the area of the Old Quarter and the urban sector of the Ciudad Hospitalaria, is part of this important project to create a new drinking water supply system. The work included the installation of 24.23 kilometers of ductile pipeline and then the construction of five tunnels for underground crossings, as well as three bridges for aerial crossings, a pumping station to feed the tank in Cerro Patacón, the rehabilitation of La Cresta pumping station, and 16 interconnections to the potable aqueduct system.