From 3,000 years the thermal water flows continuously from the heart of the earth, inside a crater at the temperature of 37.5 ° C.
The continuous exchange of 500 liters per second allows the thermal water to maintain its beneficial characteristics without the need for any external manipulation, with a complete change of swimming pools every 4 hours. For 40 years it traveled underground isolated by a 60-meter thick clayey cover, before emerging in the natural spring overlooked by the Resort. In each liter of water 2,790 grams of mineral salts are dissolved, as well as large quantities of gas, hydrogen sulphide and carbon dioxide.
The thermal water of Terme di Saturnia is sulphurous (14 mg per liter of hydrogen sulfide), carbonic (462 cc per liter of free carbon dioxide), sulphate (contains predominantly sulphate ions), bicarbonate-alkaline-earthy (contains bicarbonate, calcium and magnesium ions in significant quantities)
During the immersion in the source or even on the surface you can notice the presence of thermal plankton, an organic-mineral substance with a gelatinous consistency and variable color, which forms in the thermal water when it comes into contact with the air. An exclusive and precious active ingredient, which has extraordinary normalizing and moisturizing powers on the skin, so much so that it can also be used for cosmetics.
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