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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.

VIENNA – 29 April 2021. Coordinated with the ICPDR, many hundreds of experts in the countries of the Danube River Basin as well as other actors engaged in the fourth Joint Danube Survey – JDS4 – in 2019 and 2020. The final results have now been published and made available to the public and scientific communities online.