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With a total area of over 800,000 km², the Danube River Basin covers 10% of Continental Europe. While the main river flows through ten countries, the full basin including its tributaries covers nine more. It is a unique artery through the heart of Europe, connecting East to West, and Black Forest to Black Sea.

Vienna, 20 March 2017 - Wastewater from homes, cities, industry and agriculture flowing back to nature without being treated or reused pollutes the environment in many regions. Without proper wastewater treatment we are losing valuable nutrients and releasing dangerous substances. Beside significant threats to human health, the impact on water resources and ecosystems is tremendous.