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Running water available for human consumption inside Quito Metropolitan District began to be deficient by year 1960 due to an increase of its population. This water shortage caused several annoyances to its inhabitants up to the point that local government started on year 1990 new measures for a more effective management of its water resources. In 1992, ordinance 2910 ruled for the prevention and control of pollution produced by industrial liquid discharges and emissions into the atmosphere. Contaminating sources were manufacture of fabrics, metal products, food, beverages and tobacco with low biodegradability and high toxicity inorganic inputs and wastewater of Northern Quito majorly caused contamination of Monjas River. This research describes current water situation and proposes different alternatives of treatment plants based in a pervasive information systems.