Storing water in copper utensils is a harmless and natural way to treat a variety of health problems. The most common health problems arise due to impure water as it may create an imbalance in the digestive system leading to stomach ailments. It is very simple to purify water using copper vessels. Copper water is a natural detoxifying agent and improves digestion and cleanses the body of toxins. Just store the water in a copper vessel overnight and consume it the next day.