Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
CalciumSulfateSodiumMagnésiumFer
In the heart of Georgian Bath, the Roman Baths preserve one of Europe's best-kept Roman bathing complexes, built around 70 AD around a sacred spring dedicated to the goddess Sulis Minerva. The site gave the city its Roman name, Aquae Sulis, "the waters of Sulis". The main spring releases more than a million litres of water a day, rich in sodium, calcium, chloride and sulphate.
Insider tip — Worth knowing: the iconic green Roman bath is a museum — the untreated water is not for bathing. To actually swim in Bath's thermal spring water, head next door to the Thermae Bath Spa. Visit the museum early or on summer torchlit evenings, and stop at the Pump Room to taste the thermal water.