Copper is one of the early metals used by mankind in various utensils. India has a tradition of using copper utensils for various household as well as religious purposes. One of the prime benefits of using a copper mug is that it removes all the impurities and bacteria from the water. It also maintains a good temperature of water and other beverages.
Drinking from copper mugs enhances the quality of water and this practice can give you minute but multiple health benefits in the long run. This is the reason why our ancestors insisted on using copper utensils.