we shoud not pollute water

2. Video

4. Microbiological
Chemical
Oxygen-depleting Substances
Nutrients
Oil pollution

5. 1. Dumping of industrial wastes, containing heavy metals, harmful
chemicals, by-products, organic toxins and oils, into the nearby source
of water is one of the visible causes of water pollution.
2. Another cause for the contamination of water is the improper
disposal of human and animal wastes.
3. Effluents from factories, refineries, injection wells and sewage
treatment plants are dumped into urban water supplies, leading to
water pollution.
4. A number of pollutants, both harmful and poisonous, enter the
groundwater systems through rain water.

6. 5. The residue of agricultural practices, including fertilizers and
pesticides, are some of the major sources of water pollution.
6. Untreated pollutants are drained into the nearest water body,
such as stream, lake or harbor, causing water pollution.
7. Another major source of water pollution comprises of organic
farm wastes. When farm land, treated with pesticides and fertilizers,
is irrigated, the excess nitrogen and poisons get mixed into the water
supply, thereby contaminating it.
8. Pathogens, sediments and chemical pollutants are other sources
of water pollution.
9. The corporeal wastes produced by humans and farmed organisms
pollute rivers, lakes, oceans and other surface waters.

7. 1. A number of waterborne diseases are produced by the pathogens
present in polluted water, affecting humans and animals alike.
2. Pollution affects the chemistry of water. The pollutants, including
toxic chemicals, can alter the acidity, conductivity and temperature of
water.
3. Polluted municipal water supplies are found to pose a threat to the
health of people using them.
4. As per the records, about 14000 people perish or incur various
communicable diseases due to the consumption of contaminated
drinking water.
5. The concentration of bacteria and viruses in polluted water causes
increase in solids suspended in the water body, which, in turn, leads to
health problems.

8. 6. Marine life becomes deteriorated due to water pollution. Lethal
killing of fish and aquatic plants in rivers, oceans and seas is an
aftereffect of water contamination only.
7. Diseases affecting the heart, poor circulation of blood and the
nervous system and ailments like skin lesion, cholera and diarrhea are
often linked to the harmful effects of water pollution.
8. Carcinogenic pollutants found in polluted water might cause cancer.
Alteration in the chromosomal makeup of the future generation is
foreseen, as a result of water pollution.
9. Discharges from power stations reduce the availability of oxygen in
the water body, in which they are dumped
.
10. The flora and fauna of rivers, sea and oceans is adversely affected by
water pollution.

12. CONCLUSION
I think that we have to
change our habits
because the water is a
natural resource very
important and if we
follow the same way till
now, one day maybe our
earth will not exist.

13. What We Can Do

14. Turn off running water

16. Fertilize correctly

17. Organize or participate in
a clean up

18. Join a special society devoted to the
prevention of water pollution

19. Spread awareness

20. Video