Estudio de los criterios fisicoquímicos, microbiológicos y metales pesados en agua para consumo humano en la comunidad de Misquilli, en la parroquia de Santa Rosa, provincia de Tungurahua

Abstract

The objective of this research is to characterize the water quality and determine the concentration of heavy metals in the community of Misquilli, belonging to the parish of Santa Rosa. Monitoring was carried out in May 2023, taking 6 samples along the water transport route, from its origin to the point of consumption. In addition, analyses of the physicochemical characteristics of the water were performed using the photometer for minerals and the atomic absorption spectrophotometer for heavy metals; in the microbiological analysis was performed from membrane filtration, following the allowable limits established in Annex 1 of the Environmental Quality Regulations (Table 1 TULSMA) for source water, and in Annex 2 of INEN Standard 1108:2014 for drinking water. The values obtained were interpreted by comparing them with the standards stipulated in the ordinance. Some physicochemical parameters were identified that exceeded the maximum permissible limits (MPL) in fluoride water with values between 3.7 to 4.2 milligrams per liter (MPL of 1.5 milligrams per liter INEN 1108:2014 and Table 1 TULSMA), cadmium with values 0.0032 and 0. 0046 milligrams per liter (MPL of 0.003 milligrams per liter INEN 1108:2014), free residual chlorine with values below 0.04 milligrams per liter (permissible range between 0.3 to 1.5 milligrams per liter INEN 1108:2014) and fecal coliforms with values of 15 CFU per 100 mL (MPL less than 1 CFU per 100 mL INEN 1108:2014).