Built in 1917 on behalf of the Water Company of Barcelona to improve the hygienic conditions of supply, the Water House of Trinitat Nova, in Nou Barris, constitutes a new cultural attraction that extends the offer of emblematic spaces of the city. An equipment to host events open to all with a high heritage value and a privileged location, between Barcelona and the Collserola mountain range.

The relevance of the Casa del Agua, a center of environmental reference and axis of new centrality in terms of economic promotion, lies in its architectural clarity and its constructive typology. It is, in fact, one of the first buildings built with reinforced concrete in Barcelona. The modernist complex, designed by engineers Felipe Steva and Planas and Joan Sitjes, is included in the city's heritage catalog.

Originally, the complex - which was closed in 1989 - was formed by a lift station, located in the district of Trinitat Vella; some chlorination pavilions and a warehouse located in the Trinitat Nova, and an underground tunnel that connected both facilities and extended towards Collserola.

Within the framework of the Urban Initiative Trinitat Nova 2007-2013 a series of actions have been carried out co-financed with European Funds for Regional Development (FEDER). Among others, the consolidation and structural repair of the architectural complex and the adaptation of the exterior space to be able to do outdoor activities that has allowed to open the doors of the Water House of Trinitat Nova in the city of Barcelona.

La Casa del Agua has three different spaces, the pavilions that contain the Multipurpose Hall and the lobby with an area of ​​412m2 that are complemented by some outdoor patios of about 700m2; the Deposits - Hypostyle Room, with an area of ​​2,500 m2 and the Key Room and the Gallery that connects both Houses of the Water of Trinidad below the Meridiana Avenue.