The water from the Santissima spring is classified as a bicarbonate-sulphate-lime-alkaline-terrous water. It is used at the Terme di Chianciano spa facility for inhalations and aerosol therapy for adults and children, and for nasal douches.
It is a hypothermal water (spring temperature, 24°C). It exerts anti-inflammatory, mucolytic and sedative action, targeting the mucosa of the upper respiratory tract and the bronchial tree.
Acqua Santissima water provides efficacious treatment of rhinitis, sinusitis, tracheitis, laryngitis, and chronic bronchitis, including asthmatoid bronchitis, when inhalatory therapy with sulphurous waters may be counterindicated.