1, Ganges.
The Ganges is the largest river in South Asia and one of the most polluted in the world.
The pollution of the Ganges River is mainly due to industrial pollution, pesticide and fertilizer pollution, the dumping of various domestic garbage, feces, corpses, heavy metals, etc.
Although the water of the Ganges River is so polluted, it cannot stop India and Bangladesh from drinking it as holy water, so the average life expectancy of people in both countries is among the lowest in the world.
2, Indus River.
The Indus River is the longest river in South Asia and is no less polluted than the Ganges.
After all, the living customs of Pakistan and India in the Indus Valley are almost the same, so the Indus River, like the Ganges, is also seriously polluted by industry, agriculture and life.
In addition, the flow of the Indus River is small, and the self-cleaning ability is not as good as that of the Ganges, so I am afraid that the pollution is even worse than that of the Ganges, and the water of the Indus River is also the world's famous 'poisonous water'.
3, Chitaron River.
Located in the western part of the Indonesian island of Java, the Citaron River is known as one of the dirtiest rivers in the world.
The Citaron River basin is very densely populated, and there are a large number of slums in Indonesia, and everyone must be familiar with the dirty mess in the slum cellar area.
It is because of the various domestic waste generated by the slums, coupled with the discharge of industrial wastewater, that the pollution of the Citaron River even exceeds that of the most famous Ganges River in India, and its pollution index can almost reach the top of the world.
4, Yellow River. 
The Yellow River, located in the northern part of China, is one of the most polluted rivers in China.
In the past, the Yellow River was mainly caused by soil erosion on the Loess Plateau, but in modern times, it is mainly caused by industrial wastewater and pesticide and fertilizer pollution.
At present, about 40% of the main stream of the Yellow River is inferior water, and 62% of the tributary water is also inferior water.
5, Liaohe. 
The Liao River is located in the northeast of China and used to be the most polluted river in China.
The main reason for the pollution of the Liao River is that the local area has vigorously developed heavy industry and agricultural domestic sewage, most of which is untreated and discharged in large quantities.
Although the Liaohe River has been vigorously remediated and the pollution situation has been greatly improved, the situation is still not optimistic.
6, Haihe River. 
Located in the Beijing-Tianjin-Hebei region of North China, the Haihe River is one of the most polluted rivers in China.
The main cause of the pollution of the Haihe River is that the surrounding cities have vigorously developed heavy industries, and these industrial wastewater are discharged, coupled with agricultural development, pesticide and fertilizer pollution, and a large amount of urban domestic sewage discharge.
Seventy-five percent of the water sources in the Haihe River basin were once seriously polluted, and now the river basin is being vigorously renovated, hoping that the Haihe River basin will be restored to clear water and blue sky as soon as possible.
7, Red River. 
The Red River is an international river that flows into Vietnam from the southwest of China.
Although the protection of the Red River in our country is quite good, but in Vietnam the pollution is quite serious, especially in recent years, Vietnam's industrialization process has accelerated, and a large amount of industrial wastewater has been discharged, so that the Red River water, which has long been overwhelmed, has become a poisonous river.
In particular, in the lower reaches of the Red River, in Vietnam's estuarine delta, many local residents have begun to flee the area because of the high level of river pollution.
8, Mekong River.
The Mekong River is an international river renamed by China's Lancang River flowing into Southeast Asia, and it is also one of the most polluted rivers in the world.
Because most of the areas through which the Mekong River flows are relatively backward areas and flow through many countries, most of these countries are relatively backward in development and lack awareness of the protection of water resources, so that a large amount of industrial and agricultural polluted wastewater is directly discharged into the Mekong River.
Although the water quality of the Lancang River section of China is not bad, the water quality of the downstream Mekong River section is worrying, because the river water is seriously polluted, and even most of the fish in the Mekong River contain harmful substances.
9, Niger River.
The Niger River, located in West Africa, is the most polluted river in Africa.
The main reason for the pollution of the Niger River is that it is one of the most densely populated areas in Africa, and a large amount of industrial and agricultural waste, waste, petroleum and other chemical waste produced by the population are all discharged into the Niger River.
As a result, the Niger River has become a 'stinky ditch' that can beautify the Ganges River in India, making it one of the dirtiest rivers in the world.
10, Irrawaddy River.
The Irrawaddy River is a river renamed by the Dulong River flowing into Myanmar in China, and it is also one of the most polluted rivers in the world.
The pollution of the Irrawaddy River is mainly caused by the discharge of a large amount of industrial and domestic waste, especially the discharge of a large amount of plastic waste, making the Irrawaddy River also a famous 'plastic river'.
Due to the unstable situation in Myanmar and the backwardness of the economy, the pollution of the Irrawaddy River has not been effectively controlled, and it may become more serious in the future.