Análise físico-química e microbiológica das águas do Rio Igaraçu no município de Parnaíba - PI

Abstract

The Water is one of the most important natural resources for the maintenance of life. Even if this resource is essential to life, it is not cared for and preserved in the right way. The present work aimed to evaluate the physical-chemical and microbiological parameters of the waters of the Igaraçu River located in the municipality of ParnaibaPI. Rio has a great socioeconomic importance for the population, and even with this great relevance, it is observed during the trip by the municipality that a water significant load of domestic and industrial pollutants are released. The waters of the Igaraçu River were characterized by physico-chemical and microbiological parameters In the period from September 2015 to February 2016. Ordinance Nº 518/2004 of the Ministry of Health establishes limits for physical and chemical parameters such as: pH, alkalinity, hardness, turbidity, Color, Iron, ammonia, chlorides, and Microbiological as: Esherichia coli or Coliformes Term tolerant. The physico-chemical parameters were obtained from colorimetric techniques, using a potability kit for the determination of the analyzes. The microbiological analyzes were obtained through the Spread plate method. The results obtained for physicochemical analyzes are within the acceptance standards for human consumption according to Ministry of Health Ordinance Nº 518/2004. The microbiological measures indicated the presence of microorganisms, the results found don´t within the established standards. The water analyzed has parameters within the established limits, but the environmental education policy of Rio Igaraçu is important, since it is very important for the population of the northern region of Piaui.