Avaliação da qualidade da água das escolas municipais urbanas de Santa Cruz-RN

Abstract

The drinking water supply system of the city of Santa Cruz-RN can cause a series of changes in the water and its quality characteristics. This study aimed to evaluate the quality of water used in urban public schools in Santa Cruz - RN. They were conducted on 2 of water collecting troughs 8 schools each, totaling 16 samples, which is water used for human consumption. The analyzes were performed physico-chemical and microbiological. All samples showed absence for total and thermotolerant coliforms, as required by current Brazilian law. As for physico-chemical characterization of the water was held fluorine analysis, color, turbidity, total hardness, chlorides, pH, sulfide and chloride. The results revealed fluoride values, color, turbidity, total hardness, chloride and pH within the limits recommended by the Ministry of Health for all samples. However, the chlorine content of 62.5% schools presented below are recommended, and for the sulfide was seen even higher values in all samples. These results indicate the need for an adaptation of the quality of supplied water.