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Universidade Federal de Minas Gerais (2007)

Avaliação de alternativas para suprimento de água para consumo humano na região semi-arida de Minas Gerais

Schvartzman Alberto Simon

Titre : Avaliação de alternativas para suprimento de água para consumo humano na região semi-arida de Minas Gerais

Auteur : Schvartzman Alberto Simon

Université de soutenance : Universidade Federal de Minas Gerais

Grade : Doutor em Saneamento, Meio Ambiente e Recursos Hídricos. 2007

Résumé
The present research had as its main objective the assessment of the water resources management in the semiarid region of the State of Minas Gerais, verifying the feasibility of the adoption of conventional water supply and roof water harvesting techniques in order tosatisfy the needs of human consumption. The Jequitinhonha river basin was selected for the development of the study. In the methodology technical, economical, social and administration, operation and maintenance criteria were settled to evaluate the domestic water systems. To assess the domestic roof water harvesting alternative technique, in which cisterns are used to collect the rainwater that reaches the houses roofs, a model was developed and was applied utilizing daily rainfall data from two monitoring stations in the Jequitinhonha river basin. The results lead to alternative choices that could satisfy the water human consumption of people in the semiarid region of the State of Minas Gerais, especially the dispersed communities and isolated families, with a regular attention from water resources and sanitation policies. Moreover the feasibility studies show that there are some conditions that have to be observed before the implementation of the best alternative, such as available programs, projects and financial resources, to assist the public decisions. Some discussions showed after the evaluations and studies, which were performed at the selected river basin, stand out about the effectiveness of water resources management in the State of Minas Gerais, the overlapping of the policies related to water resources and the non governmental organizations cisterns building actions. The research stands out the necessity of more studiesa bout sustainable administration, operation and maintenance of domestic water supply systems and about the optimization on implementation costs. Finally it is concluded that the water scarcity in the semiarid region of the State of Minas Gerais could be related to the non utilization of existing superficial and groundwater resources. It is also concluded that there isa need of a better integration among the public policies as to permit the elaboration of a strategic plan for that region. It is recommended the complementation of legislation on water resources and basic sanitation with the incorporation of water harvesting techniques, with economic and financial incentives for their implementation

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