Drinking water can be produced from any natural sources like groundwater, lakes and rivers (surface waters) or seawater.
Drinking water standards are set by the World Health organization or by the European Union.
Drinking water must be free of suspended solids, microorganisms and toxic chemicals. Mineral concentration recommendation varies from country to country but most of the minerals have a maximum concentration recommended to ensure safe, equilibrated and pleasant water to drink.
For bottled water, taste can vary upon calcium, magnesium, sulfate and iron content.
