IMPACT OF ANTHROPOGENIC ACTIVITIES IN THE SURFACE WATER QUALITY ABOVE GUARANI AQUIFER: A CASE STUDY

The impact of anthropogenic activities on water quality in rural and urban areas of Southern Brazil, above the Guarani aquifer, was investigated in this study. Microbial, physical-chemical, and Trophic State Index tests were performed on water samples. In the urban region, the results revealed high levels of total phosphorus, nitrite, and E. coli, as well as a high Trophic State Index, indicating severe stress. Elevated nitrate concentrations in rural regions have been linked to soil fertilising techniques. This work adds to the growing body of knowledge about the influence of riparian forest recovery and wastewater treatment on water quality, particularly in places next to significant aquifer systems like the Guarani.

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