Análise dos fatores e parâmetros analíticos da água potável de uma empresa pública de Pernambuco

Abstract

The quantity of available water in the planet, being in superficial or in-depth collections, it is enough to assist the needs of the globe population. Problems exist related to the distribution of natural reservoirs and the population density, since there is not equivalency between the quantity of the available water and the populational density. Besides, poor use and undesirable attacks to the water source has turned the planet potable water into improper for its use in the natural form. The water is indispensable for everything and everyone: the food chain, agriculture and cattle and even for tourism and leisure. Of all the available sources, the underground sources are the ones that offer the highest quality, for that reason they are much used by human consume and industrial production, being food, medication, and general use. The current essay of major completion (TCC) has as its purpose to analyze the physio chemical and microbiological characteristics of the potable water used for the consume of employees of a public company of the state of Pernambuco, based on the evaluation of the implemented good practices, as well as the implementation of the APPCC system. The water used by the company is from an underground source, from a crafted well. From the months of July to November of 2020 there were analyzed documents related to the physio chemical and microbiological parameters: heterotrophic bacteria, total Coliforms and Escherichi coli, accordingly, to validated methods by SMWW. The results showed macrobiotic load in the researched points and in the 3 kinds of analyzed microorganisms (˂1.0 to 7.9x10 UFC/mL to heterotrophic; ˂1.0 CFU/mL to Total Coliforms and ˂1.0 CFU/mL to E. coli) much inferior to the maximum allowed by the current legislation, which is 500 UFC/mL, absence/100mL and absence/100mL, respectively. As for the physical and pH parameters, it was observed variations: pH=5.3 to 6.6; Color= 10 to 44uH; Turbidity= 1 to 8 UT and Free residual chloride= 0.02 to 0.66mg/L. These results allowed to conclude that: in every analyzed data and during the period that was studied, the water used in the company fits the potability standards for the physio chemical and microbiological parameters; the used water treatment in the public company of the state of Pernambuco, consisting of the disinfection, filtration, stocking and distribution steps, is enough to support and guarantee the water quality; observed inconstancies in the physio chemical parameters of the pH, color, turbidity and free residual chloride did not compromise the quality of the water for human consumption stablished by the 2914 regulation from 12/12/2021.