Natural mineral water is water exclusively of underground origin, collected either from a spring or by drilling. Defined as such by the regulation, it is used for bottling and / or thermalism. Pure, geologically protected and with a perfectly stable mineral composition, it is not subject to any chemical treatment or disinfection before bottling or thermal use. These waters belong, by definition, to high inertia aquifers, generally deep, in some cases carbogenic. Well protected from surface contamination by their geological cover and, where appropriate, also by specific protection policies, these aquifers are generally located in regions with little exposure to anthropogenic pressures (intensive agriculture, industry, urbanization, etc.).