Mario Castro-Gama is a Civil Engineer, MSc in water science engineering and Hydroinformatics. Currently, he is senior specialist for underground infrastructure at Vitens N.V, The Netherlands. He spearheads and/or contributes to various innovation initiatives within the realm of drinking water distribution and applied informatics. Some of his notable projects include Critical Infrastructure Investment Planning 2050, BOS model (decision support system), Digital Twins implementation, Data Assimilation for Digital Twins, Energy Audits, and Data Quality Control. His professional expertise extends to river engineering and water management for large basins, encompassing reservoir operation, hydropower, and water allocation across diverse regions such as Latin America, Europe, the Middle East, Africa, and China. He also participates on international missions for knowledge exchange and capacity development through Vitens Evides International (VEI). Member of SWAN Digital Twin Utility Advisory Group.