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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.

Vienna, 22 March 2015. Just in time for this year's World Water Day, the Joint Danube Survey 3 Final Scientific Report was published today.

Vienna, 22 March 2015. The Joint Danube Survey 3 (JDS3) was the world’s biggest river research expedition in 2013. Its results are now available in a comprehensive report, which can be downloaded from this website.

The Joint Danube Survey 3 (JDS3) was the world’s biggest river research expedition of its kind in 2013, the UN International Year of Water Cooperation. Its results were published in a comprehensive report in early 2015.

The key purpose of Joint Danube Surveys (JDS) is to produce reliable and comparable information on carefully selected elements of water quality for the length of the Danube River, including its major tributaries. Three Joint Danube Surveys have previously been conducted, in 2001, 2007, 2013, and 2019. The 5th Joint Danube Survey is due to launch on 1st July 2025.

Danube Delta, 26 September 2011. A detailed analysis and assessment of the Danube Delta will be held within the project "Joint environmental monitoring, assessment and exchange of information for integrated management of the Danube delta region" from 26 September until l 7 October 2011.

Vienna, 11 September 2008 – The Danube and its tributaries are becoming cleaner, the ICPDR announced today, presenting the scientific results of the Joint Danube Survey 2 (JDS2) - possibly the world’s biggest river research expedition ever.

JDS 2, the world's biggest river research expedition, was held in 2007. Its goal was to produce comparable and reliable information on water quality and pollution for the Danube and some tributaries. The ICPDR coordinated its implementation. Launched on August 14, 2007 in Germany, three JDS2 boats traveled downstream the Danube, through 10 countries, to the Danube Delta.

The investigation of the Tisza River was a follow-up project of the Joint Danube Survey 2001 organised by the ICPDR. The objective of the survey was to investigate the water quality along the river and to promote public awareness. The countries participating at the survey include Romania, Slovakia, Hungary, and Serbia and Montenegro.

The Joint Danube Survey 2001 was carried out by the ICPDR and is the most homogenous analysis of the water quality and the ecological status of the Danube River. Over 140 chemical and biological parameters were analysed and over 40.000 laboratory results were generated.