Water Quality Analysis (IQA) of Lake Uhe Lajeado in Porto Nacional- TO

Water is a source of life and an essential element of nature for human survival. Currently, this water resource has gone through a constant crisis over the centuries, especially when it comes to crises caused by the pollution aspect that affects this water resource and affects its efficiency in terms of consumption. The use of water is a demand that is present in several areas, in agriculture it has a resource role with consultative use. The present study aimed to obtain qualitative information about the quality of the water resource available in the lake located in the Araguaia-Tocantins Hydrographic Basin. Monitoring has the purpose of obtaining biological, chemical, physical, ecological information and classification into classes specified in the NSF IQA. In the case study, the water quality monitoring procedure was carried out, through the water quality standards - IQA NSF, carried out with the samples collected at a point of the Lake UHE Lajeado in the municipality of Porto Nacional - TO. These analyzes are important because the site, in the future, will serve as a new point of water collection for public supply. The Water Quality Index was evaluated by permissible limits established by CONAMA resolution nº 357/2005 and NSF - National Sanitation Foundation, which was evaluated in 9 parameters that made it possible to calculate the IQA - Water Quality Index.