The outcomes of the EU funded FP5 COLASU project for the El Meleh lagoon ecosystem were presented to Dr Khalil Attia, the Director General of ONAS, the national organization responsible for wastewater management in Tunisia. Dr. Attia commended the collaboration between IRMCo and the Tunisian research partners from the Department of Geology within the Faculty of Sciences at the University of Tunis, the University of Human Science in Tunis and the ‘Commissariat Regional au Developpement eau-agricole of the Ben Arous Region, for having successfully determined the source of the pollution that is reaching El Meleh lagoon during occasional heavy rainfall episodes from industries located in the upstream part of the lagoon catchment. Dr. Attia had in fact followed the project from its start in his capacity as the Direct General of ANPE, Tunisia’s national environmental protection agency.