The Barcelona City Council, which has always been committed to sustainability and innovation, has taken on the challenge of transforming the Magic Fountain of Montjuïc into a symbol of efficiency and environmental responsibility. This fountain, known for its spectacle of music, light, and color, is an iconic Barcelona attraction that pumps 2,600 liters of water per second every day.
Location: Barcelona, Spain
Year: 2009
Application: Reuse of Process Water

To transform the Magic Fountain into a model of sustainability while maintaining its appeal and functionality, despite the challenges posed by the use of groundwater. It was vital to ensure water quality and protect the fountain’s hydraulic system without compromising its performance.
AZUD proposed an innovative solution: the AZUD HELIX AUTOMATIC self-cleaning disc filtration system.
The team AZUD HELIX AUTOMATIC 4DCL, is a self-cleaning disc filtration system designed to remove organic and inorganic suspended particles, providing an uninterrupted supply of filtered water through the sequential backwash of each filtering element.
This system ensures the quality of the water used, which is crucial for the fountain’s optimal operation and the protection of its hydraulic infrastructure. Despite the corrosive nature of the groundwater, the AZUD system has proven to be robust and efficient.


The implementation of this technology has yielded significant benefits, including:
The Montjuïc Magic Fountain is now a prime example of how AZUD’s advanced filtration technology can improve sustainability and efficiency in municipal applications, helping to preserve the cultural and environmental heritage of the city of Barcelona.
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