Caracterização dos parâmetros físico-químicos de amostras de águas subterrâneas da região de Ouro Branco - RN.

Abstract

Water is essential for the well-being and survival of all living beings, playing crucial roles in various aspects of life and the environment, in addition to being of great importance to agriculture and industry, and essential for domestic use and human consumption. However, for human consumption, water must comply with the standard values established by the Ministry of Health. Therefore, this study determined the characterization of the physico-chemical parameters (pH, turbidity, electrical conductivity, alkalinity, total hardness, and chlorides) of five groundwater samples from the Ouro Branco municipality region in RN, comparing them with the water potability standards established by the Ministry of Health through ordinances N.° 5/2017 and N.° 888/2021. Only sample 1 (Adeval) showed compliance with the physico-chemical parameters (pH, turbidity, electrical conductivity, alkalinity, total hardness, and chlorides) established by the Ministry of Health, with a pH of 6.98, alkalinity of 158 mg.L-1, turbidity of 1.42 NTU, electrical conductivity of 1071 μS.cm-1, total hardness of 294 mg.L-1, and chlorides concentration of 152 mg.L-1. Although the other samples comply with some parameters, for other parameters, they showed values above the maximum allowed by the Ministry of Health. For pH and turbidity, all samples were in compliance. For chlorides, only sample 1 was within the standard value, and for total hardness, only samples 1 and 2 had values below the maximum allowed.