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Vienna, 1 July 2025 (Motto am Fluss) - Held every six years, the Joint Danube Survey (JDS) builds on the legacy of its predecessors and brings together experts from across the Danube River Basin and beyond for its implementation. The Survey conducts the most comprehensive scientific analysis of Europe’s second-longest river. Today marks the official launch of the fifth edition of this unique initiative: JDS5.

Paris, 12 June 2025 – As UNESCO celebrates 60 years of global water science and the 50th anniversary of the International Hydrological Programme (IHP), the ICPDR proudly contributed to this international milestone by co-hosting a side event that placed the Joint Danube Survey 5 (JDS5) firmly in the spotlight.

The Joint Danube Survey 5 (JDS5), the world’s most comprehensive investigative surface-water monitoring effort, will officially kick off on 1 July 2025 in Vienna. This large-scale scientific survey will bring together experts from 14 countries to assess the health of the Danube River and its major tributaries.

The EU Water Framework Directive aims to make all waters cleaner and healthier. To meet these requirements, the ICPDR's Danube River Basin Management Plan closely examines the most important pressures affecting water status.
Significant water management issues, called SWMIs, are the central pressures of basin-wide importance affecting the ecological and chemical status of surface waters, including pollution by organic substances, nutrients, and hazardous substances, as well as hydromorphological alterations. The first interim overview on the Significant Water Management Issues was created in 2007 for the 1st DRBM. The SWMIs outlined in this report were derived based on the requirements of the WFD and mainly related to quality aspects. For transboundary groundwater bodies, both qualitative and quantitative issues are addressed.