Tender for The municipality of Sant Bartomeu del Grau directly manages the service of potable water supply of the municipality. The current hydraulic efficiency (RTH) of the network is 82%, a value considered adequate. Nevertheless, one of the priority objectives in the short and medium term is the reduction of water losses in the network, especially taking into account that the municipality depends on a single supply point, the wells of Vilaseca, a fact that makes it necessary to optimize the management of the resource to the maximum. In this context, it is necessary to reinforce and renew the sections of the network that present a poor condition or a repeated history of failures, with the aim of improving the reliability of the service, reducing losses and ensuring the continuity of the supply. Currently, there are still several sections of the supply network made up of fibrocement pipes, an obsolete material not suitable for current standards, which are planned to be replaced by new conduits complying with the current regulations. Specifically, the project includes the renewal of three sections of the network. The object of the present contract is the contracting, promoted by the municipality of Sant Bartomeu del Grau, of the execution of the works included in the executive project of renewal of the potable water supply network of the municipality, with the aim of improving the efficiency, safety and sustainability of the service, in accordance with the technical and administrative prescriptions established in the corresponding documents.