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New water treatment facility boosts Barcelona’s emergency supply capacity

The Estrella plant can now supply 15% of Barcelona's metropolitan area during emergencies.

4 Jordi Soler · July 10, 2026, 18:58 · 3 min de lectura

The Estrella de Sant Feliu de Llobregat has been upgraded to provide 15% of Barcelona's metropolitan water supply during emergencies. This critical infrastructure enhances drought resilience.

The Estrella de Sant Feliu de Llobregat, a vital water treatment plant, has undergone significant renovations that will enable it to supply up to 15% of the metropolitan area of Barcelona in times of emergency. The facility was inaugurated on Friday and is now capable of treating up to 1,000 liters per second, although it will typically operate at a rate of 400 liters per second.

This upgrade comes at a crucial time as the region faces increasing challenges related to water scarcity. The plant’s enhancements are particularly important given the recent history of severe droughts that have affected water availability across Spain.

Located in the Parc Agrari, the Estrella plant has been part of the local landscape for decades, with wells dating back many years. However, evolving European regulations necessitated upgrades to meet stricter standards for potable water treatment. These improvements were initiated during the last major drought as part of a broader strategy to enhance resilience against future water shortages.

The renovation project utilized advanced technologies, employing 75% activated carbon and 25% reverse osmosis methods for effective purification. Additionally, plans are underway for a green roof that will minimize visual impact on this socially and agriculturally significant area frequented by walkers, cyclists, and runners.

The total investment for this project amounts to €45.9 million, which will ultimately be funded by consumers through their water tariffs. During the inauguration ceremony, officials including Salvador Illa, President of the Generalitat de Catalunya, praised the public-private partnership that made this ambitious project possible.

This initiative aligns with ongoing investment plans from Veolia and Aigües de Barcelona aimed at enhancing hydric resilience throughout the region. Similar projects are also being developed in areas like Besòs as part of a comprehensive approach to secure sustainable water resources.

The importance of such infrastructure cannot be overstated; historical precedents show that cities with robust emergency supplies fare better during crises. For residents and visitors alike in Barcelona’s metropolitan area, knowing that there is now enhanced capacity for clean drinking water can provide peace of mind amid climate uncertainties.

The Estrella facility not only serves as a critical resource but also represents an investment in future sustainability efforts within urban environments. As climate change continues to pose threats globally, local initiatives like this one are essential in ensuring communities remain resilient against environmental challenges.

For those interested in visiting or learning more about this facility or its surrounding park areas where outdoor activities abound, access is available via public transport routes leading directly into Sant Feliu de Llobregat.

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Jordi Soler

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