Casa de l'Aigua
Casa de l'Aigua is an industrial heritage complex in Barcelona, linking Trinitat Vella and Trinitat Nova. Its pumping station, treatment buildings, and underground galleries formed a connected waterworks. Built between 1915 and 1919, the site treated and distributed water to the old city centre and Barceloneta.
Aigües de Montcada developed it after the 1914 typhus epidemic exposed weaknesses in Barcelona’s drinking-water supply. Wells in Montcada i Reixac fed water through a gallery beneath Avinguda Meridiana. That route crossed a 50-metre height difference before reaching treatment and storage tanks in Trinitat Nova. The main tank held 10,000 cubic metres across a 6,800-square-metre site.
The facility served Barcelona’s water network until 1989, and restoration reopened the complex to the public by 2018. Its galleries also sheltered local residents during the Spanish Civil War. Today, MUHBA exhibitions trace water management from Roman times to the industrial revolution, while a restored hypostyle hall hosts public events.
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