Análise da qualidade de águas tratadas: um comparativo entre a ETA e o consumo residencial em Barreira/CE

Abstract

Water is considered by many to be the most important natural resource for the survival of living beings. Our rivers, lakes and seas, over time, have been severely degraded by man's action on the environment, through disorderly urbanization, expansion of industries, deforestation mainly in riparian areas, burning and waste, which lead to a reduction in the volume of water avaliable, contamination and pollution, and as a consequence, promote the appearance of water-borne diseases. Thus, this research focused on carrying out a comparative study between the quality of water distributed in three different points located in the city of Barreira-CE and the reference values of the analyzes provided by the Water Treatment Station in the region, in view of the parameters for water potability required by Ordinances 888/2021 of the Ministry of Health. Physical-chemical parameters of pH, turbidity and chlorides were analyzed in addition to the microbiological parameters of total Coliforms (TC) and E. coli. Among the physical-chemical parameters, the pH and turbidity values were above the value provided by the ETA, however they are still below the framework of Ordinances 2.914/2011 of the Ministry of Health. As for the chloride values, the analyzes showed values well above the acceptable, mainly in the communities of Córrego and Croatá, ranging from 63.1 mg/L Cl to 163.42 mg/L Cl and 67.49 mg/L Cl to 251.34 mg/L Cl, respectively. In this sense, it is important that the Ceará Water and Sewage Company (CAGECE) have greater control over the water quality parameters in the treated water station, and also carry out inspections in the water supply system, with a view to locating and mitigate possible sources of contamination.