The "Fira de l'Aigua" is held the first weekend of October in Caldes de Malvella.
They do a series of fun activities for the whole family.
You can also visit the Roman baths and enjoy a weekend at the Prats and Vichi Catalan spas and enjoy their accessories:
Massages
Thermal baths...
It is a fair where you can have fun doing activities related to water:
Water Filled Balloon War
Water atraccions
Squirt gun war...
It is a fair organized to share solutions that guarantee and promote the future of water.
I recommend this fair if you like water and nature.
Also because it is celebrated in many places but I advise you that if you want to have a good time for the water fair go to Caldes de Malavella because you will have cheap accommodation, very good food and as I have already told you many accessories related to water.
This is a photo where they are doing a parade in front of the Balneari Prats
This is a soap bubble activity
This is a water related activity
Some video announcing the festival