Evaluación de la calidad físico químico y microbiológico de agua de consumo humano en la Parroquia de Totoras, Cantón Ambato, Provincia de Tungurahua.

Abstract

The objective was to evaluate the microbiological, physical and chemical quality of the of water of human consumption at Totoras parish, Ambato canton, Tungurahua province, before and after potable treatment, to catalogue as suitable to the human consumption.78 water sample were analyzed during June- July 2016 from the sample points: two watershed; tanks before and after treatment, and storage tank, two houses in the high, middle and low point, and two before treatment, the process was done by duplicated. The procedures were developed according to the NTE INEN 2176 (1998) parameters: Water. Water Quality. Sample. Sample Techniques. Physical parameter were determined (taste, color, smell, murky), chemical (free chlorine residual, nitrites, nitrates, fluorine) and microbiological (fecal coliforms and totals), that demands the NTE INEN 1108:2014 normative Potable water. Requirement. According to the standard methods as Standard Methods for examination of water and wastewater, Hach Method and NMP/100ml multiple Tubes method. This study showed that the water of human consumption from Totoras parish fulfill with the maximum limits allowing by the norm related with the physical parameters and microbiology. However, the chemical parameter accomplish with the majority of analysis requirements except the fluorine because it is out of the permissible limit which average is 3,21 mg/l by consuming water with high fluorine quantity. The population will suffer dental fluorosis and damage to osseous skeleton. Therefore, the water from Totoras parish is not suitable to the human consumption because this parameter is in high quantities from the watershed to the house. It is recommended to include to the potable process the coagulation with aluminum sulfate or other coagulants aluminate method, due to it will reduce of 3, 6 to 1,4 mg/l of fluorine quantity using 250 mg/l of aluminum sulfate achievement fluorine quantities to acceptable levels.