At Massa Martana, near Todi, there is the San Faustino spring: cold (13 °C) bicarbonate-alkaline-earthy mineral water indicated for disorders of the digestive system, metabolic system, urinary tract and nervous system. It is also useful for paediatric cases and pregnant women.
The spa was built toward the end of the 19th century. At the Hotel Terme San Faustino there is now the Officina del Benessere, a centre for spa treatments and holistic medicine.