Vichy Thermal Water is created over the course of its slow underground journey and thanks to unique geological interactions. Firstly, rainwater seeps through the land, which slowly filters and purifies it. On its journey, it can reach depths of up to 4,500 meters. Here, the underground temperature rises to such extremes that the water is heated to over 140°C/284°F, causing it to mix with the gases escaping from magma and forcing it upwards. During its slow ascent through the crystalline rocks of the Paleozoic era, formed some 500 million years ago, it becomes infused with millenary minerals such as iron, potassium, calcium, manganese, silicon, copper... and rare trace elements such as fluorine, lithium, bromine and strontium. The conditions of the mixing process are so particular, the proximity of the elements so great, and the dosages at play so unusual, that this water truly is unique. It cools over the course of its journey towards the surface and emerges at a temperature of 27.3°C/81°F – with one of the highest mineral content of all European waters.