If you keep water in a copper vessel, preferably overnight or at least for four hours, the water acquires a certain quality from the copper which is very good for your liver in particular and your health and energy in general. If water is being violently pumped and is travelling to your house through many turns in lead or plastic pipes, with all these bends and turns, much negativity happens to the water. But while water has memory, it also has a way of unfolding itself back into its original state. If you just leave this tap water undisturbed for an hour, the negativity will undo itself.
If you’re constantly traveling like me, if your food is not necessarily controlled, minor poisons are always getting into you in various forms. Copper handles those things for you.