This article details the development and deployment of an Internet of Things (IoT) platform aimed at optimizing water usage in community kitchens in Cali, Colombia. Conducted at the Fundación Aprender, Crear y Crecer, which serves as both a dining hall for 120 people and a residence for the project leader’s family, this initiative employs an IoT architecture enhanced by Edge Computing technologies. This system integrates continuous data collection through IoT sensors, edge processing for predictive analysis, and a cloud platform for advanced data analytics and visualization, optimizing decision-making in real-time. The research findings indicate a strong positive correlation (Pearson coefficient approx. 0.926) between rising average temperatures and increased water consumption, especially during summer months. Data gathered over two years enabled the identification of consumption patterns and hypothesis formulation. Based on these insights, a scalable platform is proposed for implementation across 762 other community dining facilities in the city, offering a robust solution for large-scale water management. This strategy not only aims to enhance environmental and economic sustainability but also seeks to improve the quality of life for vulnerable communities through efficient water resource management.