"The Ganges River is so heavily polluted at Varanasi that the water is septic - no dissolved oxygen exists. The statistics get worse. Samples from the river show the water has 1.5 million faecal coliform bacteria per 100mL of water. In water that is safe for bathing this figure should be less than 500! " -Lonely Planet

I also witnessed people brushing their teeth and gargling the water in their throats.

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