Estudo físico-químico e microbiológico da água do Rio Igaraçu próximo a comunidade Alto do Batista em Parnaíba - PI

Abstract

Water is extremely important for any life on the planet, without it humans could not survive, so it must have physical-chemical and microbiological parameters with quality standards so that the human consumption of populations is free of pathologies. However, even knowing this importance, the degradation of water resources is increasing and anthropic action is the main agent of this reality. The present work sought to evaluate the physical-chemical and microbiological parameters of the water of the Igaraçu River in the city of Parnaíba-PI near the Alto do Batista Community. Igaraçu River has a great importance for the city, because besides serving for the direct consumption by the population also it offers waters for irrigation, breeding of animals, leisure, etc. Ordinance No. 518/2004 of the Ministry of Health establishes the limits for physical and chemical parameters such as: pH, Iron, Chlorides, Ammonia, Alkalinity, Hardness, Turbidity, Color and Microbiological, such as Escherichia coli or Coliforms Thermotolerants. It should be noted that the physicochemical analyzes were performed using colorimetric and volumetric methods, and the microbiological analysis was performed using the Spread plate method. The results found in the physical-chemical analysis are in accordance with Ordinance No. 518/2004 of the Ministry of Health, but it should be noted that the parameter Iron was close to the established limit. For the microbiological analysis, it was observed that there was growth of bacterial colonies in the three dilution factors: 10-1, 10-2 and 10-3, however only in Point 2 at the 10-2 dilution there was no presence of bacteria. The analyzed water has parameters within the limits established by Ordinance No. 518/2004, however in relation to the bacteria observed in the analyzed points a specific study is necessary to quantify them.