To be able to be called natural mineral water, it must meet certain standards specified by both Italian and European laws: natural mineral water is a “water from protected underground sources, free from contamination at the source and with a constant composition and characteristics, with possibly favourable effects to human health and bottled at the source in safe and controlled containers.”
Each type of natural mineral water, because of its hydrological evolution, is unique and reaches the consumer exactly as it came out of the earth at the source, after having obtained Ministry of Health certifications based on geological studies and organoleptic and physical-chemical analyses.
One of the specifications determining a preliminary classification is the dry residue (the amount of mineral residue after the evaporation of 1 L of the water having been subjected to a temperature of 180 ° C expressed in milligrams per litre), which identifies:
- minimum mineral content (dry residue < 50mg/l)
- low mineral content (dry residue btw 50 and 500 mg/l)
- medium mineral content (dry residue btw 500 and 1500 mg/l)
- rich in minerals (dry residue > 1500 mg/l).
Depending on our health and what kind of lifestyle we lead, one type of mineral water may be more beneficial than another, and some waters may actually be therapeutic.