Question

causes of water pollution?

Answer 1

Causes of Water Pollution

Water pollution is caused due to several reasons. Here are the few major causes of water pollution:

Sewage And Waste Water: Sewage, garbage and liquid waste of households, agricultural lands and factories are discharged into lakes and rivers. These wastes contain harmful chemicals and toxins which make the water poisonous for aquatic animals and plants.

Dumping: Dumping of solid wastes and litters in water bodies causes huge problems. Litters include glass, plastic, aluminum, styrofoam etc. Different things take different amount of time to degrade in water. They affect aquatic plants and animals.

Industrial Waste: Industrial waste contains pollutants like asbestos, lead, mercury and petrochemicals which are extremely harmful to both people and environment. Industrial waste is discharged into lakes and rivers by using fresh water making the water contaminated.

Oil Pollution: Sea water gets polluted due to oil spilled from ships and tankers while traveling. The spilled oil does not dissolve in water and forms a thick sludge polluting the water.

Acid Rain: Acid rain is pollution of water caused by air pollution. When the acidic particles caused by air pollution in the atmosphere mix with water vapor, it results in acid rain.

Global Warming: Due to global warming, there is an increase in water temperature. This increase in temperature results in death of aquatic plants and animals. This also results in bleaching of coral reefs in water.

Eutrophication: Eutrophication is an increased level of nutrients in water bodies. This results in bloom of algae in water. It also depletes the oxygen in water, which negatively affects fish and other aquatic animal population.

Hope it helps!!!

Answer 2

Causes of river pollution include:

1. Human dumping: Due to human dumping of waste and other harmful substances in to river water directly. Since most of the towns and cities are beside rivers, the human waste is

2. Industrial waste release: Most industries release their processing waste into the rivers. This is an easy methods for them to get rid of waste. But by release of industrial sewage into river water there is severe pollution to the water.

3. Land water flow: Contamination during rains due to flow of rain water from contaminated land into rivers. In-case of floods where water from river flows over surrounding lands. This flow collects all the possible waste and dump into river.

4. Air pollution: The air pollution is formed by disposal of harmful gases into air. This pollution from air in-turn returns to ground through rains and contaminate ground water and river waters. This indicates that the pollution we create finally reaches us in one or other way.

5. Farm pollution: Farming is the industry which relies largely on river water. The river water is used for irrigation. But pesticides and other toxic chemicals are used by farmers to control diseases. These toxins reach the river canals which supply water the cities and towns ahead.

(Hope it helps)