Watch the Water

“A large part of the freshwater ecosystems is potentially endangered by the high concentration of pharmaceuticals,”

A large number of drugs found in the environment—analgesics, antibiotics, anti-platelet agents, hormones, psychiatric drugs, anti-histamines—have been detected in nature at levels dangerous for wildlife.

Endocrine disruptors, for examples, have notoriously induced sex changes in fish and amphibians.

In other research presented at the conference, scientists found that the rapid expansion of sewage systems in large urban areas has sharply increased river pollution, because much of the effluence is not adequately treated.

“In 2000, sewage was a source of pollution in about 50 percent of the rivers in the world,” said Maryna Strokal, a scientist at Wageningen University & Research, in the Netherlands.

“By 2010, sewage was a source of pollution in almost all rivers worldwide.”

Antibiotics and chemicals waste is also driving the evolution of drug-resistant bacteria, UN Environment warned in a study in December.

Between 70 and 80 percent of all antibiotics consumed by humans and farm animals—totalling thousands of tonnes—find their way into natural environments, the UN agency said in a report.

Read more at: https://phys.org/news/2018-04-rivers-worldwide-threatened-pharma.html#jCp

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