For Hindus in India, the Ganga is not just a river but a mother, a goddess, a tradition, a culture and much more.
Some Hindus also believe life is incomplete without bathing in the Ganga at least once in one's lifetime. Many Hindu families keep a vial of water from the Ganga in their house. This is done because it is prestigious to have water of the Holy Ganga in the house, and also so that if someone is dying, that person will be able to drink its water. Many Hindus believe that the water from the Ganga can cleanse a person's soul of all past sins, and that it can also cure the ill. (Wikipedia)