Caracterización microbiológica de las aguas de los ríos de la ciudad de Cuenca

Abstract

This study was conducted in the four rivers of the City of Cuenca, with the aim of identifying and quantifying microorganisms indicators of fecal and environmental contamination such as: Cryptosporidium spp, Giardia spp, Entrerococcus feacalis and molds and yeasts.

For the determination of Cryptosporidium spp and Giardia spp an inorganic flocculation technique was used and subsequent staining with immunofluorescent dyes. The total Streptococcus and Enterococcus feacalis count was performed by the membrane filtration method. Regarding the molds and yeasts, the fluid plate technique was carried out.

The presence of Cryptosporidium spp., Giardia spp. Enterococcus faecalis and Molds and Yeasts was evidenced, in the high zones low counts were evidenced, in the middle and lower zone, the concentration increases gradually, finding the highest concentrations in the last sampling stations .

It was concluded that the Tomebamba river presented a higher count of all the microorganisms in the lower zone, and the one that showed the least contamination of this type is the Yanuncay river.