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Science discovers new method for detecting feces in the Danube
Scientists at KL Krems analyzed fecal contamination in the Danube between 2019 and 2020 and developed a novel follow-up method.
Science discovers new method for detecting feces in the Danube
The Danube, once known as one of Europe's cleanest rivers, is once again in the spotlight for alarming levels of fecal pollution. Scientists from the Karl Landsteiner University of Health Sciences (KL Krems) and the ICC Water & Health carried out a comprehensive analysis of the water quality between the Wachau and Vienna between March 2019 and March 2020. Despite the suspicions about shipping companies illegally dumping feces into the Danube, this study showed how noe.ORF.at reported that no improper entries could be detected. The research method, which uses a mix of prediction, detection and statistical calculation, now allows precise statements to be made about the microbial load in human feces.
New insights into the fecal source
Surprising findings also came from a study that examined the microbiological pollution of the Danube between Ulm and the mouth of the Black Sea. 250 samples were analyzed and it was shown that human feces were the main source of pollution. Over 80 percent of the markers pointed to human origins, while animal feces could only be detected in a maximum of 9 percent of the samples. These results, which are in Daily Gazette published underline the importance of better wastewater treatment systems along the Danube, especially given that millions of people rely on clean water.
The analytical techniques developed are likely to be groundbreaking because they enable precise identification of the causes of contamination, which is of great importance for future water investigations. Both the analyzes from KL Krems and the microbiological studies shed light on the problem of water quality on one of Europe's most important trade routes. Both research projects impressively demonstrate the urgency and need for further investigations and improvements in the area of wastewater disposal along the Danube. The river therefore remains a key factor for environmental protection and the health of the millions of people who live in its catchment area.