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Drops of curiosity

Gocce di curiosità

Parliamo di purezza: sai cosa bevi?

Mineral waters there are many different types, each with unique features, determined by their content of minerals and trace elements. It is a scenario "immense" - think that in Italy there are about 200 sources of mineral water - which can be difficult for consumers to navigate.

First, the "waters which, having originated from an aquifer or underground reservoir, comes from one or more natural or bore sources and that have special hygienic characteristics and properties necessary for health" are regarded as natural mineral waters by law. They must be bottled at source, meaning as well as flow from the source, without any "healing" treatment, in secure containers and controlled. For marketing you are eventually needed the recognition of the Ministry of Health, after evaluation of the geological studies and bacteriological analysis and chemical-physical. A process that generally ensures absolute quality and safety, but what are the selection criteria that allow us to bring to the table mineral water right for us? Indispensable in this sense to know, through a correct label reading, the values ​​of the different elements contained therein.

Impariamo a leggere l’etichetta

By law it is permitted on the label of mineral water some certain terms of its content in trace elements and that can influence the choice of the consumer:

  • It can have a diuretic effect
  • suitable for low-sodium diets
  • It stimulates digestion

Other values ​​shown on the label should nevertheless be checked and taken into account in the water that we bring to the table:

For daily consumption it is advisable to choose water with low fixed residue (mineral). The fixed residue is the quantity of mineral salts dissolved in one liter of water, which determines the classification of water itself, and should be less than 500 mg / l. A second very important parameter is that relating to nitrates and nitrites, nitrogen compounds or pollutants, the levels of which of course must be the lowest possible, and in any case not exceeding 50 mg / l

Sodium is another key value for the choice of a mineral water. It is a trace element useful for the transmission of nerve impulses in our cells and helps regulate the body's water-salt budget, but in too high concentrations can cause fluid retention. Water is considered low sodium content when it presents quantities of less than 20 mg / l.

Water hardness is ultimately determined by its content of calcium and magnesium: high levels of these elements classified as limestone, but there are no statutory limits.


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