Interagua is responsible for the supply and management of drinking water, sanitary sewerage and rain drainage services in the Guayaquil District (5,200 km²), within the framework of a 30-year public service delegation contract (2001-2031). The District comprises the city of Guayaquil, the urban areas of Cerecita and Progres - up to the limit with Santa Elena and Playas districts. Guayaquil is the most densely populated city in Ecuador with 2,500,000 inhabitants, as well as the most important trade and financial center. The mission of Interagua targets primarily the local population, but also yields benefits to the wider community, especially through its contribution to a safer environment.

• Potable water

La Toma plant, located 26 km north of the city of Guayaquil, collects raw water from the Daule River and comprises 4 collecting plants, each with its own raw water pumping station. Then, raw water is taken to 3 treatment plants – Convencional (23%), Lurgi (11%) and Planta Nueva (66%). The plants are connected to 4 treated water aqueducts that carry water, through 18 storage tanks. The distribution network is 2,891 km long and is composed of 3 main sectors covering the urban areas of Guayaquil:

• The Western, Centre and Southern sectors

• The Northern Sector.

• The Pascuales sector

In 2006, 412 millions cubic metres of potable water were produced

In 2007, 401 millions cubic metres of potable water were produced.

In 2008, 376 millions cubic metres of potable water were produced.

• Sewerage and rainwater system:

The sewerage system is composed of 25 pumping stations connected to 3 treatment plants: Progreso, Tornillo and Pradera. Treated water is then released to 9 final discharge spots in the Guayas and Daule Rivers.

In 2007, the pumped volume approximated 10 millions cubic metres.

The rainwater system comprises a total of 11 dripping basins that discharge in the Guayas and Daule rivers. Overall, there are 59 drain canals in the city, for a total length of 75,676m.

• Global technical management:

Interagua constantly realizes maintenance, prevention and rehabilitation operations, which allowed reducing water losses and cutting energy bills. The company is currently deploying renewed efforts to keep forging ahead and progress towards an improved global environmental efficiency

Moreover, Interagua set up the Quality Control Department, in order to control equipment, processes and infrastructure quality. During the first 5-year period, Interagua fully responded to the water quality pre-requisites regarding its distribution network.

In 2006, Interagua enhanced its efficiency by adding a Geographic Information System (GIS) which gives a representation of water networks, connections and plans especially to guide expansion works