Pesquisa de coliformes totais e termotolerantes em água de poços artesianos da zona rural de Cianorte - PR

Abstract

The present study had as objective to analyze the microbiological quality of water from artesian wells consumed by people residing in the rural area of the city of Cianorte-PR, in order to determine whether is fit for human consumption. For this purpose, 20 samples of water from this region were analyzed, distinguishing in 10 samples of artesian wells located on the property, and 10 samples of collective artesian wells, determing the absence or presence of total and thermotolerant coliforms by the most probable number technique (MPN). The results showed the presence of total coliforms in both types of artesian wells, being more incident in own wells (54,5%) than in community wells (45,5%). Thermotolerant coliforms were detected in two samples of artesian wells, and samples from the collective artesian well were negative for these bacteria. This contamination may be related to the lack of treatment of these sources and the way they are exposed to the environment. It is suggested to carry out projects to raise awareness of the importance of treating this water with chlorine in an attempt to improve the quality of water consumed by this population.