The course will take place in Zaragoza next May 22 and 23. It is organized by the portal aguasresiduales.info, and the CENTA foundation. It has the collaboration of the Aragonese Water Institute and the ZINNAE Cluster. A presentation is scheduled on the afternoon of May 23rd by Luis M. Pérez Magallón, Technical Director of the company. In it, it is intended to give an overview of the company's experience in dealing with the risks of small communities. DTD has 20 years of experience in this field, having carried out dozens of projects of different technologies.