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O presente trabalho aborda a questao dos perimetros de protecao que devem ser definidos e instalados ao redor das captacoes ligadas a producao de aguas minerais, quer sejam fontes naturais ou pocos profundos, de acordo com a legislacao atual. Aqui e descrita e aplicada uma metodologia para definicao destes perimetros, baseada na condutividade hidraulica do meio poroso e no decaimento bacteriologico, em funcao do tempo de trânsito do contaminante neste meio. De acordo com esta metodologia, proposta para fontes naturais de agua mineral, sao calculados e delineados tres perimetros, ou seja: Zona Imediata (distância obrigatoria que independe da geologia, fixada em 10 metros), Zona Proxima (preferencialmente para protecao de contaminacao bacteriologica) e Zona Afastada (limite da area de recarga). Esta metodologia, baseada em dados reais do meio poroso, mostrou ser de facil aplicacao e compreensao nos tres contextos geologicos pesquisados, tendo sido ja aceita pelos tecnicos de nosso setor governamental, responsaveis pela analise dos relatorios de pesquisa mineral. ABSTRACT The present work covers the problem to delineate protection areas around both natural sources and wellheads that produce mineral waters, according the present legal concerns. A methodology to define such perimeters is described and applied. It is based on the hydraulic conductivity of the porous medium and bacteriological decay as function of the contaminant transit time in the medium. According the methodology here proposed for natural sources of mineral water, three perimeters are calculated and delineated: Immediate Zone (obligatory zone, independent of the geology and fixed to 10 meters); Near Zone (preferentially for bacteriological contamination protection) and Far Zone (border of the recharge area). That metodology, based on porous medium real data, showed to of easy application and understanding in the three geological situations tested. It was also accepted by the governmental agencies responsible by the evaluation of the reports for mineral exploration.

PERÍMETROS DE PROTEÇÃO PARA FONTES NATURAIS