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O municipio de Jaboticabal esta localizado em regiao onde prevalece a atividade agricola e ha uma ampla utilizacao da agua de pocos, tanto para consumo humano, como animal, pertencentes a Microbacia Hidrografica do Corrego Rico. O presente estudo teve como objetivo avaliar a qualidade microbiologica deste tipo de abastecimento alternativo, em relacao a ausencia ou nao do fator de protecao (revestimento interno e calcada) em 30 pocos de propriedades rurais pertencentes ao municipio. A qualidade microbiologica da agua , no periodo de chuvas (janeiro a marco), foi determinada utilizando o metodo do substrato cromogenico em cartelas Quanti-Tray/ 2000 (APHA,1992) indicando padroes fora e dentro da potabilidade, respectivamente presenca ou ausencia de Escherichia coli , segundo a portaria 2914/11 (BRASIL, 2011)  A influencia dos fatores de protecao dos pocos na qualidade microbiologica da agua foi determinada por meio do calculo do Risco Relativo (RR) para o fator de protecao com intervalo de confianca de 95% (SCHWABE et al., 1977). Das 30 propriedades estudadas, 16 (53,33%), apresentavam-se fora dos padroes de potabilidade, e o RR para ausencia de revestimento interno foi 3,14, e ausencia de calcada foi 4,80, o que significa um risco 3,14, e 4,80 vezes maior, respectivamente, de ocorrer contaminacao fecal da agua quando da ausencia de tais fatores de protecao. Os resultados evidenciaram um elevado numero de propriedades fora dos padroes microbiologicos e de potabilidade previstos pela legislacao, exigindo a adocao de medidas corretivas e preventivas aliadas ao Programa de Recuperacao de Nascentes da Microbacia, visando a diminuir o risco de ocorrencia de doencas de veiculacao hidrica. SUMMARY The city of Jaboticabal is located in a region where agricultural activity dominates the landscape and water from wells is extensively used for both human and animal consumption. The water sources and wells belong to the Corrego Rico Hydrographic Watershed. The present study aimed to evaluate the microbiological quality of the water supplied by the wells, in relation to the presence or absence of the protection factor (inner lining and sidewalk) in 30 wells of rural properties located in the municipality. The microbiological quality of the water in the rainy season (January-March) was determined using the chromogenic substrate method in Quanti-Tray/2000 cartouches (APHA, 1992) to indicate whether the water was potable or not, quality given by the presence or absence of Escherichia coli , respectively, according to the decree 2914/11 (BRAZIL, 2011). The influence of protective factors (inner lining and side walk) in the wells on the microbiological quality of the water was determined by calculating the relative risk (RR) for the protection factor with a confidence interval of 95% (SCHWABE et al., 1977). Of the 30 properties studied, 16 (53.33%), were outside the potability standards, and the RR for absence of inner lining was 3.14 while for the lack of sidewalk was 4.80, which means a risk 3.14 and 4.80 times, respectively, for the fecal contamination of water to occur when such protective factors are not present. The results showed that a high number of properties are outside the microbiological standards for drinking water according to the present legislation. It is concluded that the adoption of corrective and preventive measures allied to the Recovery Program of Headwaters Watershed are required in order to reduce the risk of waterborne diseases.

ars veterinária

ANÁLISE DA PRESENÇA DE ESCHERICHIA COLI EM ÁGUA SUBTERRÂNEA DE PROPRIEDADES RURAIS NO MUNICÍPIO DE JABOTICABAL-SP / ANALYSIS OF Escherichia coli PRESENCE IN GROUND WATER OF RURAL PROPERTIES IN JABOTICABAL - SÃO PAULO