Análises física e microbiológica da qualidade da água no lago do parque municipal Lara Guimarães Trindade /GO

Abstract

The planet earth is made up of 70% of water, with 2.5% of that water being sweet and only 0.3% being destined for human consumption. The assessment of water quality is intended to indicate the potential of some microorganisms or substances that compromise water quality. Contamination by microorganisms or substances can range from common diseases requiring little or no treatment to more serious diseases when contact with coliforms is above acceptable levels. The objective of this work was to investigate the water quality of the Municipal Park Lara Guimarães, located in the city of Trindade-GO. Collections were carried out on the banks of the dams at a depth of approximately 40 cm. After being collected, it was taken to the laboratory where the physical parameters (Hydrogen Potential, Turbidity, Temperature and Dissolved Oxygen) and microbiological parameters (thermotolerant Coliforms) were evaluated by Conágua following the Standard techniques. Among the analyzed parameters, only thermotolerant coliforms showed increase in the rainy season, the second campaign at point one was 940 NMP / 100 mL of water, 4.700% higher than the first campaign, but below the resolution standard CONAMA 357/05. At point two, the value found was 15.555% higher than in the first campaign, with a value of 2800 NMP / 100 mL of water, which exceeded the values established by current legislation (CONAMA 357/05) in 300 NMP / 100 mL of water. From the results it was concluded that the waters under study are suitable for recreation of secondary contact.