Abstract

The report discusses the microbiological status of the Yantra River in the region of the town of Veliko Tarnovo. Water samples collected at 11 points of the river stretch were analyzed for quantification of E. coli and coliforms, intestinal enterococci and heterotrophic bacteria. It was found increased levels of fecal indicator bacteria in the river waters, varying over time and along the riverside. The number of viable E. coli and enterococci increased under the influence of untreated wastewater influx and the Belitsa River.

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