How much water does an adult elephant have to drink a day?

Info from Busch Gardens: Elephants require about 68.4 to 98.8 L (18 to 26 gal.) of water daily, but may consume up to 152 L (40 gal.). An adult male elephant can drink up to 212 L (55 gal.) of water in less than five minutes. This is water consumed and does not include water for bathing. See link for more.