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Name:
I.D
Sec
Instructor

Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds.

The water pollution situation from Bangladesh could be the largest poisoning in history and the irony is that this situation could be the result of all the efforts in cleaning the water for some of the poorest nations of the world.

Sources of pollution: Factories, power plants and sewage treatment plants are considered point sources of water pollution, because they emit pollutants at discrete locations, usually through a pipe that leads to a lake or stream. Nonpoint sources of water pollution are scattered or diffused. [pic]

Rivers of Bangladesh

Bangladesh is a riverine country. About 300 rivers including tributaries flow through the country constituting a waterway of total length around 24,140 km. Following is a list of some of the major rivers of Bangladesh.

• Brahmaputra River • Buriganga River • Karnaphuli River • Meghna River • Padma River • Jamuna River • Turag River • Role of the rivers

Rivers are the most important geographical features in Bangladesh, and it is the rivers that created the vast alluvial delta. It's been known that the out flow of water from Bangladesh is the third highest in the world, after the Amazon and the Congo systems. The Padma, Jamuna and the lower Meghna are the widest rivers, with the latter expanding to around eight kilometers across in the wet season, and even more during the floods. The river plays very important role upon our country.

Naturally

The rivers represent the beauty of Bangladesh. Bangladesh is a very beautiful country from ancient time and the rivers are the most important things which make this land most beautiful.

Economically

Bangladesh is an agricultural country. The rivers help us in agriculture. The prosperity of her agriculture depends on these rives. We get many kinds of fishes from these rivers. Fish is our important wealth. Our fishermen catch a huge quantity of fish. They earn a lot of foreign exchange by exporting fish. Fish is our main item of food. Traditionally the river posses the network. Our rivers are important for communication and transport. Boats, Launches and steamers move on these rivers in all seasons. Men and goods are carried from one place to another and one port to another port.

Sometimes the rivers cause a great damage to our life and property. In rainy season they make floods. Roads, houses, fields go under water. They destroy our wealth, People suffer from untold sufferings.

Pollution of river:

The rivers of Bangladesh are polluted in several ways. Among the rivers Burigonga, Shitolokkha, Maghna, Turag, Karnaphuli are the most polluted rivers in our country,

The Burigonga

• The garbage of Dhaka city is dropped in Burigonga. • All drains are attached with this river. • Human wastes dropped here. • Wastes of Tannery are also dropped here. • Slams on the river.

The Shitolokkha

• Industrial wastes are dropped here. • From Pagla there are 1500 industries beside the river. • It is also polluted by water vehicles wastes. • Reducing fish

The Meghna

Pure toxic chemical dumped into the Meghna River

Textile dyeing industry discharges untreated toxic liquid into this river.

Paper mill in the same area is dumping the wastes in the river.

The water became stinky and black colour.

The Karnaphuli

• Tin-shed and concrete structure build after filling up a vast stretch of Karnaphuli River • Continuous siltation is decreasing the draught of the river causing it to lose its navigability

The effect of river pollution

Rivers are one of the most important things in our country. River pollution badly affects the surrounding environment.

Naturally

River pollution destroys the beauty of river. The water losses its purity for the pollution. Gradually it changes the climate. It affects plants and organisms living in these bodies of water; and, in almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities. It reduces living place for water species.

Economically

For the pollution we lost many kinds of fishes. We are not getting enough fish from the river. It also destroys the fertility of land.

What should we do?

There are many things that we can do individually to prevent water pollution. We all should try to reduce the pollution. Given below are a few ways to prevent water pollution:

• Toxic products like paints, automobile oil, polishes, and cleaning products should be stored and disposed off properly. • Try using natural fertilizers and pesticides as far as possible. • Prohibit dumping toxic industrial chemicals into rivers and streams. • Fix oil leaks in the water vehicles • Waste materials must be disposed off properly. • Industrial wastes should be treated before disposal, to make sure the substances are harmless.

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There are also many ways to reduce the river pollution. Each day 17 kilolitre polluted water are dropped in the river. We should be more conscious about this matter.