Efficient management of the integrated water cycle requires advanced digital tools capable of centrally integrating, analyzing, and optimizing hydraulic, operational, and territorial information. In this context, Giswater 4 represents a qualitative leap in the digitalization of water services, incorporating substantial improvements in its architecture, interoperability, and analytical capabilities. This work presents the implementation and adaptation of Giswater 4 within the framework of the PERTE project (Strategic Projects for Economic Recovery and Transformation) for the digitalization of the water cycle at Aigues de Manresa. Version 4 introduces a more robust and intuitive interface, greater integration with other platforms through the development of a REST API, and enhanced capacity to work with hydraulic digital twins. Additionally, it includes new functionalities aimed at advanced management of water supply and sanitation networks, such as traceability analysis, scenario evaluation, leak detection, and prioritization of infrastructure investments.