Today is a special occasion to call the attention to the assets of the Danube River and risks endanger the beauties of our unique riverine system. On the 29th of June each year, the 14 countries of the Danube Basin jointly celebrate one of Europe's greatest river system. In the margin of the Danube-Day, on 28 June an International Danube Day event on "Challenges of plastic waste in the Danube region and beyond" was organized by EUSDR priority areas on "water quality" and "environmental risks", in Budapest, Hungary.