12. Bangladesh
Bangladesh has long since suffered due to arsenic contamination of water. About 20 million people in the nation are using arsenic-contaminated tube wells as a water source. While arsenic poisoning through drinking water is considered a global threat, Bangladesh’s open latrines and untreated waste coupled with arsenic contamination have resulted in severe water pollution, what puts this country on our list of most water polluted countries with the worst pollution in the world.
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