Natural Thermal Waters

The natural thermal springs were first discovered by Prince Bladud around 863BC, who was cured from his skin disease after bathing in the waters. The waters were then enjoyed by the Celts, Romans, Saxons and Georgians and are the constant thread throughout the history of Bath.

The water fell as rain around 10,000 years ago and then sank to a depth of about 2km. Here it is heated by high temperature rocks before rising back up through one of the three hot springs in the centre of the City, the Cross Spring, Hetling or King’s Spring, which supplies the Roman Baths.

The thermal waters contain over 42 different minerals, the most concentrated being sulphate, calcium & chloride. Over 1 million litres of this mineral-rich water flow from the springs each day.

The thermal water in all four baths at Thermae is the optimum bathing temperature of approximately 33.5°C (92°F).