The intervention of Águas de Portugal gathered together 3 wastewater companies and 19 municipalities. It was an integrated supra-municipal governance model that took into account the physical reality prevailing in the river basin, gathering together skills, sharing management structures, rationalising investments and enabling economies of scale.
Águas de Portugal Group was responsible for a 680 million euros investmentencompassing more than 3.8 million equivalent inhabitants. This investment, carried out over 15 years and completed by 2012, was partially financed by the European Union and the European Investment Bank.
This extensive set of interventions of high technical complexity was crucial to ensure the appropriate interception of domestic and industrial sewage and its transport, treatment and return to the environment in environmentally safe conditions. The sanitation systems implemented at the time rank among the most modern and innovative in Europe.
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