These are the most famous Spas in Sicily, with the classification of their thermal waters:

- Acireale (CT): sulphureous, salso-bromo-iodic and radioactive waters (22°C);
- Alì Terme (ME): salso-bromo-iodic and sulphureous water;
- Castellammare del Golfo (TP): salso-sulphureous water;
- Eolie Islands (ME): sulphureous, salso-bromo-iodic and radioactive waters;
- Montevago (AG): sulphate-calcic waters;
- Sciacca (AG): sulphureous water;
- Terme Vigliatore (ME): sulphureous-bicarbonate-alkaline waters;
- Termini Imerese (PA): salso-bromo-iodic waters.