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WATER POLLUTION


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Water pollution is the contamination of water bodies(e.g. lakes , rivers , oceans and groundwater ).Water pollution a ects plants and organisms living inthese bodies of water ; and, in almost all cases the e ect

is damaging not only to individual species andpopulations, but also to the naturalbiological communities .Water pollution occurs when pollutants are dischargeddirectly or indirectly into water bodies without adequatetreatment to remove harmful compounds .

http://en.wikipedia.org/wiki/Waterhttp://en.wikipedia.org/wiki/Lakehttp://en.wikipedia.org/wiki/Riverhttp://en.wikipedia.org/wiki/Oceanhttp://en.wikipedia.org/wiki/Groundwaterhttp://en.wikipedia.org/wiki/Bodies_of_waterhttp://en.wikipedia.org/wiki/Specieshttp://en.wikipedia.org/wiki/Biocoenosishttp://en.wikipedia.org/wiki/Pollutanthttp://en.wikipedia.org/wiki/Water_treatmenthttp://en.wikipedia.org/wiki/Water_treatmenthttp://en.wikipedia.org/wiki/Pollutanthttp://en.wikipedia.org/wiki/Biocoenosishttp://en.wikipedia.org/wiki/Specieshttp://en.wikipedia.org/wiki/Bodies_of_waterhttp://en.wikipedia.org/wiki/Groundwaterhttp://en.wikipedia.org/wiki/Oceanhttp://en.wikipedia.org/wiki/Riverhttp://en.wikipedia.org/wiki/Lakehttp://en.wikipedia.org/wiki/Water


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CAUSES . !umping of industrial wastes, containing heavymetals, harmful chemicals, by"products, organic to#insand oils, into the nearby source of water is one of thevisible causes of water pollution.

$. %nother cause for the contamination of water is theimproper disposal of human and animal wastes.

&. ' uents from factories, re neries, in*ection wells andsewage treatment plants are dumped into urban watersupplies, leading to water pollution. +. % number of pollutants, both harmful and poisonous,enter the groundwater systems through rain water.


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. -he residue of agricultural practices, includingfertili ers and pesticides, are some of the ma*or sourcesof water pollution.

/. 0ntreated pollutants are drained into the nearestwater body, such as stream, lake or harbor, causingwater pollution.

1. %nother ma*or source of water pollution comprisesof organic farm wastes. When farm land, treated withpesticides and fertili ers, is irrigated, the e#cessnitrogen and poisons get mi#ed into the water supply,thereby contaminating it. 2. 3athogens, sediments and chemical pollutants areother sources of water pollution.


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EFFECTS. % number of waterborne diseases are produced by the

pathogens present in polluted water, a ecting humansand animals alike.

$. 3ollution a ects the chemistry of water. -he pollutants,

including to#ic chemicals, can alter the acidity,conductivity and temperature of water.&. 3olluted municipal water supplies are found to pose athreat to the health of people using them.

+. %s per the records, about +666 people perish or incurvarious communicable diseases due to the consumptionof contaminated drinking water.

. -he concentration of bacteria and viruses in polluted


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/. 7arine life becomes deteriorated due to waterpollution. 8ethal killing of sh and aquatic plants in rivers,oceans and seas is an aftere ect of water contaminationonly. 1. !iseases a ecting the heart, poor circulation of bloodand the nervous system and ailments like skin lesion,cholera and diarrhea are often linked to the harmful

e ects of water pollution.

2. 9arcinogenic pollutants found in polluted water mightcause cancer.%lteration in the chromosomal makeup of the futuregeneration is foreseen, as a result of water pollution.

4. !ischarges from power stations reduce the availabilityof o#ygen in the water body, in which they are dumped.


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(. %ON)T Use too $u*+ Pesti*i'es=armers must take care and see that they don>t use too muchpesticides. -his will prevent runo s of the material into nearby water

sources .,. A-oi' Paint an' Petroleu$ to Sin"s!o not throw paints or petroleum products in to your toilets or sinks.ince paints and petroleum products cannot be treated they should

not be dumped i to sewage water as it results in long lasting e ects .. A-oi' Oil Spills in O*eans

?il spills in ocean are one of the ma*or contributors of water pollution.o ships must transport oil only when weather conditions are good.!uring storms ships must not be allowed to transport oil which mightresult in shipwrecks and eventually oil spills.


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