The Ganges River originates in the Himalayas and flows through several major cities before forming a vast delta, with a basin that ranges from 200 to 400 miles wide. It is one of the most polluted rivers in the world due to over a billion liters of untreated sewage and partially cremated human and livestock corpses entering it daily. Despite the pollution, the Ganges remains an important religious site where thousands of people visit daily to bathe and perform rituals.