Hydrochemical evaluation of different spring waters for bottling

Abstract

This investigation was carried out within the Parana sedimentary basin in São Paulo and Mato Grosso do Sul States, Brazil, and involved the sampling of different spring water samples with the purpose of evaluating their quality for bottling Several methods were utilized for acquiring the hydrochemical data, such as methyl orange end-point titration, potentiometry, ion selective electrodes, spectrophotometry, atomic absorption spectrophotometry and inductively coupled plasma spectrometry The results obtained for the analyzed samples were compared with the guideline values established by the São Paulo State and Brazilian Health Ministry legislations for defining the potable water standards The Brazilian Code for Mineral Waters that was established by Register 7841 published on 8 August 1945 was also taken into account for verifying if the spring waters are mineralized The hydrochemical data allowed the identification of anthropogenic and geogenic inputs of some constituents in most of the samples, which affected the water quality and did not allow them to be utilized for commercial purposes (bottling) The waters of these springs can only become appropriate for human consumption after previous chemical treatment