There are grossly two types of drinking water in the market namely reverse osmosis water and mineral water.
Reverse osmosis water remove basically all impurities, suspended solids, minerals etc from the tap water. It is a pure water.
In contrast, mineral water normally is produced from the underground water which is testified to be rich in minerals.
Which one is good for health?
Drinking water is for rehydration and not for nutritional supplements. It is not the effective way to get the nutritional minerals for the body. You may obtain the essential minerals from fruits and vegetables.
Rather than taking mineral water, drinking reverse osmosis water is a better way to rehydrate your body without exposing yourself to consuming heavy metals.
Coway provides reverse osmosis water and alkaline water. Please visit http://www.the-coway.com for details.