Qualidade físico-química e microbiológica de águas subterrâneas no Município de Dom Pedrito, RS

Abstract

This study deals with the analysis of water quality, through the execution of physicalchemical and microbiological laboratory tests of the groundwater of the municipality of Dom Pedrito-RS, which was carried out between May and July 2018, with the aim of to verify the potability of water used mainly by the population of the rural area of the municipality, whether or not it is suitable for activities in general such as animal watering, irrigation, recreation and even human consumption. This underground water is the main source available for the consumption of this population, that comes in its totality of cacimbas, wells of bucket and artesian wells. A total of 54 samples were collected, 51 from the rural zone and three from the urban zone, all of them from wells and cacimbas, which underwent physicalchemical analysis (color, turbidity, pH, alkalinity, hardness, manganese, matter organic and residual chlorine) and microbiological (total coliforms and Escherichia coli). The localities that participated in the study are represented on a map of the interior of the municipality of Dom Pedrito-RS and duly identified. The result of this work was that in all the samples the presence of total coliforms was detected and in more than 80% the presence of Escherichia coli, which indicates contamination of the water table, making it impossible for the human consumption of this water in its in natura form.