This work presents the project AUGEIAS, an intelligent internet of things (IoT) management platform for reuse of treated wastewater in precision agriculture. The AUGEIAS project aims to create an intelligent ecosystem, which enables and optimizes the safe and efficient re-use of wastewater from the output of the wastewater treatment plant (WWTP) for irrigation purposes. Advanced IoT systems, combined with low power wide area networks, cloud computing, data analytics and artificial intelligence technologies are utilized to improve the involved decision-making processes for farmers and utility companies. In this paper, we discuss AUGEIAS, objectives, operational requirements, architecture and the experimental testbed developed for initial project testing and to identify potential issues and improvements.