Avaliação da qualidade da água do rio Cuiabá na Passagem da Conceição para fins de abastecimento público entre 2007 e 2014

Abstract

Among various indexes to determine water quality, One of the most used is the IQA, Developed in the United States in 1970 by NSF - Nacional Sanitation Foundation, Based on the DELPHI method (da Rand Corporation), Known as an expert opinion poll technique, In the search for greater convergence in parameter data, Incorporating parameters considered relevant for water quality assessment (SEMA, 2016). Based on the Water Quality Monitoring Reports, Hydrographic Region of Paraguay, Of the Secretariat of the Environment (SEMA), Published in the years 2010, 2011 and 2014, the objective of this work is to evaluate the water quality of the Cuiabá river, At Estação Passagem da Conceição Station, for supply purposes between 2007 and 2014. The treatment of water aims to improve the quality of raw water, removing impurities that may cause harm to human health. For the calculation of the Water Quality Index (IQA), followed the methodology of the Guide of Collection and Preservation of Specimens of CETESB and the Standard Methods for the Examination of Water and Wastewater, with their respective updates. All results were compared with CONAMA Resolution 357/05 (SEMA, 2010; SEMA, 2014; SEMA, 2016). Considering the sampling point, was observed in which the values for IQA ranged from 50 (Bad) to 87 (Good) with a mean of 72 (Good), However, this index is not absolute for a complete understanding of water quality. It is concluded that The water of the Cuiabá river, station Passage of the conception, May be used for the purpose of supplying for human consumption, Provided that following the treatment rules of Administrative Rule no. 2914/2011, Since the standards of CONAMA Resolution No. 357/2005 are met, except for exceptions related to the rainy season.