1. Citarum river, Indonesia
2. Yamuna River, India
3. Buriganga river, Bangladesh
4. Yellow river from Lanzhou, China
The Yellow River is China’s second longest river and is the main water
supply for millions of people in northern China. But the river with
primarily Lanzhou which is the prime source of drinking water for the
two million local residences, is heavily polluted with oil spills taking
place every now and then due to industrial contamination.
5. Marilao river, Philippines
Plastic wrappers, rubber slippers, banana trunks and a bloated carcass
of a dog, that’s few of the things you may find floating in the Marilao
river. The waters contain toxic chemicals such as chromium, cadmium,
copper and arsenic making the water very dangerous. Despite campaigns
by the local government and imposing fines, households still throw
their garbage, and factories release their effluents intothe river
resulting in highly contaminated water.
6. Ganges river, India
Ganga is the most sacred river for Hindus that emerges from gangotri
glacier. An estimated 2,000,000 people ritually bathe daily inthe river,
inspite of being unsafe as chemical wastes, sewage and corpses remains
float fearlessly across the water body.
7. Songhua river, China
Sumber : http://sibukforever.blogspot.com/2011/01/7-sungai-terkotor-di-dunia.html