Coliforms in São Manoel river (MG) during the rainy period
DOI:
https://doi.org/10.6008/SPC2179-6858.2017.003.0008Keywords:
Water, Total and Faecal Coliforms, Dissolved Oxygen, PollutionAbstract
Coliform bacteria group serves as indicator of faecal contamination. As a result, this study aimed to evaluate the water quality of the river São Manoel ( MG ) along its 37 km, had five locations monitored between September 2015 and March 2016. The observed parameters were: total coliforms, fecal coliforms, dissolved oxygen and water volume flow. The coliforms were detected in triplicate using cards with culture medium in the form of dehydrated gel (DIPSLIDE paper - Tecnobac Colipaper®). The two-way ANOVA (Bonferroni) demonstrated that there was a highly significant difference (p-value<0.0001) with interaction (p-value<0.05) between the factors local of collection and time for the bacterial contamination (Log). The water from the beginning of the river has good condition, however, throughout its flow, the quality degrades until it discharges into the Pomba river. This pollution is characteristic of untreated sewage, so the water becomes unsuitable for animal and human consumption. These situation can be solved by the application of basic sanitation measures.
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