What is water pollution? List its three causes.
What is water pollution? List its three causes.
Water pollution can be considered as follows:
- For big cities, rivers, lakes and ponds are the main sources of water. In the last few decades the quality of water in these water bodies have deteriorated and has become unfit for human consumption. the contamination of water with unwanted substances which cause harmful effects on both living organisms and non-living objects is called water pollution.
- The harmful and unwanted substances which contaminate the water and cause water pollution are called water pollutants. Domestic sewage, industrial wastes, pesticides, fertilizers, synthetic detergents, chemicals, oil and grease are water pollutants. The presence of pollutants make the water foul-smelling and bad in taste. Sometimes, oil or grease is found floating over it.
The major causes of water pollution are following:
(a) Industrial sewage: The discharge of untreated industrial sewage directly into water bodies is one of the main causes of water pollution.
(b) Domestic sewage: Liquid waste from domestic activities such as kitchens and toilets are discharged into rivers through sewage systems causing water pollution.
(c) Human activities: Bathing of human beings and animals, washing clothes in or near lakes, rivers, etc., pollute the water bodies
(d) Agricultural wastes : In modem agriculture, we use large quantities of pesticides and fertilizers than required by the plants. Excess of these inorganic chemicals find their way to water bodies which result in water pollution.
(e) Oil spill: Oil spills from huge tankers is one of the major causes of water pollution which affects the marine plants and animals
Water pollution can be considered as follows:
- For big cities, rivers, lakes and ponds are the main sources of water. In the last few decades the quality of water in these water bodies have deteriorated and has become unfit for human consumption. the contamination of water with unwanted substances which cause harmful effects on both living organisms and non-living objects is called water pollution.
- The harmful and unwanted substances which contaminate the water and cause water pollution are called water pollutants. Domestic sewage, industrial wastes, pesticides, fertilizers, synthetic detergents, chemicals, oil and grease are water pollutants. The presence of pollutants make the water foul-smelling and bad in taste. Sometimes, oil or grease is found floating over it.
The major causes of water pollution are following:
(a) Industrial sewage: The discharge of untreated industrial sewage directly into water bodies is one of the main causes of water pollution.
(b) Domestic sewage: Liquid waste from domestic activities such as kitchens and toilets are discharged into rivers through sewage systems causing water pollution.
(c) Human activities: Bathing of human beings and animals, washing clothes in or near lakes, rivers, etc., pollute the water bodies
(d) Agricultural wastes : In modem agriculture, we use large quantities of pesticides and fertilizers than required by the plants. Excess of these inorganic chemicals find their way to water bodies which result in water pollution.
(e) Oil spill: Oil spills from huge tankers is one of the major causes of water pollution which affects the marine plants and animals
