Cyanobacteria are photosynthetic bacteria that produce toxins (cyanotoxins) harmful to humans and animals. When environmental conditions -light, water temperature, calm, stagnant waters, and high nutrient inputs- are favorable, they can proliferate massively, sometimes within a few days, compromising water use for agriculture, drinking water supply, and recreational activities, and generally creating safety and health problems. Climate change (reduction in water flow volume, irregular precipitation, increased temperatures, and solar radiation) and human activities that release large amounts of nutrients into the environment are increasing the risk of cyanobacterial proliferation, to the point of representing a significant source of surface water contamination in the Sudoe area. Current strategies for managing these toxic organisms, often based solely on remediation, are progressively becoming more costly and less effective as a consequence of climate change. This leads to an increased risk for water users and aquatic ecosystems, in addition to a growing challenge for water resource management entities. In this context, the main objective of the CyanEAU project is to develop realistic and acceptable tools and solutions for the competent water resource management entities regarding the prevention, early detection, and remediation against the risk of cyanobacterial proliferation at the scale of the Sudoe territory, as a means to ensure water quality, the viability of its use for key economic activities, and safety for human consumption. CyanEAUs innovative approach allows for anticipation (prevention or early detection), facilitating that the contamination episode does not occur and preserving the potential for utilization, thereby opening up a range of options available to public authorities for early, economic, and effective action.