Análise físico-química e microbiológica das águas de poços artesianos da localidade Cacimbão do município de Parnaíba -PI

Abstract

Water is a vital element for man both for his physiological needs and for his hygiene, among other purposes. Brazil is a rich country when it comes to water resources, since it presents approximately 10% of all the fresh water in the world. Many cities in Brazil stand out for their water richness, and among the several cities, stands the municipality of Parnaíba, which is rich in hydrography, both in relation to surface water and underground. The present study was developed aiming at the physicalchemical and microbiological analysis of artesian well water used as an alternative source of supply by the population of Cacimbão, Parnaíba-Piaui. For the physicochemical characterization, the parameters were: pH, Alkalinity, Turbidity, Color, Iron, Ammonia, Chlorides. Microbiological analyzes were performed with total and thermotolerant coliforms (Escherichia coli). The physico-chemical parameters were obtained from colorimetric techniques, using a potability kit for the determination of the analyzes. Microbiological analyzes were obtained through sample dilutions and counts of colonies cultured by the Pour Plate method. Both the physical-chemical and microbiological analyzes showed that the waters of the artesian wells studied are in accordance with the limits established by Ordinance 518/2004 of the Ministry of Health (MH). These results are important since the groundwater analyzed is an alternative source of water for several families in the Cacimbão, Parnaíba-Piaui locality.