The world is facing an invisible water quality crisis that removes one-third of potential economic growth from heavily polluted areas and threatens human and environmental well-being, according to a report released Tuesday by the World Bank.

Using new data and methods, this study, entitled Quality Unknown: The Invisible Water Crisis, demonstrates how bacteria, wastewater, chemicals and plastics interact with each other can uproot oxygen from the water supply and turn water into poison for humans and ecosystems (…)

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