“…Several factors influence water quality of a watershed, such as rainfall, vegetation cover, topography, geology, as well as the type, use, and management of the soil located in the river basin (MARQUES, 2016;VERONEZ, 2011); UNESCO, 1998). Contamination of the underground springs is due to a series of factors related to the disorderly growth of the cities, inadequate disposition of residues, lack of sanitary sewage systems, and the lack of urban planning (MENEZES, 2014;LAZZERINI, 2013;LOBLER, 2013;CUNHA;SHIRAIWA, 2011, MERTEN, 2002.…”