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Water treatment plants are industries in which untreated water (raw material) has to be changed into drinking water (the final product) through the use of products in operations and processes. This is one of the few industries that the product of which all human beings make use of. In recent years an increase in the demand of water has been observed which, closely linked to a decline in the untreated water quality, results in the necessity for a more efficient operation of the water treatment plants from the technical point of view as well as the economical one. This efficiency will only be reached through adequate management. Looking at our country’s necessities in this area, information was gathered about some water treatment plants through visits and a purpose made questionnaire. For these plants the different forms of management were analyzed so that the result would improve the product and the service. We must point out that this study does not present any quantitative analysis of costs. The development of this study allowed us to reach some conclusions: in general there were no great worries by the managerial systems about the quality of the water sources; the acquisition of the chemical products is made by paying the minimum price; a small number of plants that were visited adopted a technical criterion to feed in chemical products; the residue produced in the treatment tanks of sedimentation and filters is disposed in the waterways near the plants; among others. Based on these conclusions some better norms for the functioning of these plants can be proposed.

Análise e proposta de formas de gerenciamento de estações de tratamento de águas de abastecimento completo em cidades de porte médio do Estado de São Paulo.