Análises físico-química da água potável na Cidade de Inhumas-GO

Abstract

Water is an indispensable substance for life. Being of fundamental importance to make a previous treatment and the monitoring of the quality of this good, so that the water arrives proper to be consumed, avoiding several illnesses and until epidemics by some infectious agents that may be present. This work aims to evaluate the quality of the water supply in different points of the city of Inhumas-GO and to verify the physical-chemical parameters such as dissolved oxygen, pH, temperature, conductivity, ammonia, chlorine, iron, turbidity and fluorine. Analyzes were carried out in a seasonal manner, one of which occurred in low rainy season or in rainy season, where five points were chosen: 4 points in the outskirts of the city and distant from the Treatment Station of (ETA) and another in ETA itself. All analyzes were carried out in triplicates to obtain higher quality and precision of the results, and of the nine parameters analyzed the pH, temperature, ammonia and turbidity were within the parameters required by current ordinance nr. 2914/2011 of the Ministry of Health in all analyzed. The parameters, fluorine and chlorine and iron, in some points were not in accordance with the current norm; in the case of chlorine the values found were below that required, since fluoride was found to be more than what is predicted in the current ordinance and for iron at three points in the dry season, they were above the required standards. The contents for dissolved oxygen and conductivity, there are no legal control values for treated water, these two parameters being of great importance for the treatment of water and thus having importance for a normalization for such parameters, and these values can be corrected in the season of Inhumas water treatment.