Even so, the health of the delta is at the mercy of the cities and industrial centers that spew effluent into the Danube along its 1,770 - mile [2,850 km] journey to the sea.
Sekalipun demikian, kesehatan delta bergantung pada kota - kota dan pusat industri yang memuntahkan limbah ke Sungai Donau di sepanjang 2.850 kilometer alirannya ke laut.