WATER POLLUTION AND SOURCES OF WATER POLLUTION

 INTRODUCTION

Water is the essential element that makes life on earth possible. With out water there would be no life .Although 71% of the earth`s surface is covered by water.However 97%  of the total water available on earth is found in ocean and is to salty for drinking or irrigation. The remaning 3%  is fresh water,of this 2.997% is locked bin ice caps or glaciers. Thus remaning only 0.003%  of total volume of water is easily available to as ground water,water vapour, soil mixture and water in lakes, streams and river.

                             

We use water for washing cloths,bathing,etc.This means that we are adding some materials to the water,which spoil its quality ,smell and colour of the water is also changed.

POLLUTANTS

Harmful substance such as sewage ,toxic chemicals and silt,etc.That are mixed with water ,the water become polluted .The substance that pollute water are called pollutants.

Polluted drinking water was to affect public health because of bacterial water borne diseases .Most surface water pollution is harmful to aquatic organism and causes possible can be contaminated by various hazardous chemical substance that can create serious health risks.

                                                         

SOURCE OF WATER POLLUTION

Water pollutants  are classified as point source and non point source.

POINT SOURCE

When a source of pollution can be readily identified because it has a definite source and place when it enters the water it is said to come from a point source. Point source of water pollution comes mainly from industrial waste and municipal waste water treatment plants, power plants.

NONPOINT SOURCE 

Sources of pollution can be readily idientified.Non point source of pollution comes from constriction sites ,agriculture run off,acid rain etc.

 

Comments

Post a Comment

Popular posts from this blog

CAUSES OF WATER POLLUTIN

Image
 DISEASES CAUSING PATHOGENS There are several classes of common water pollutants. These are disease -causing pathogens such as bacteria virus, protozoans and parasitic worms that are enter water from domestic sewage and human and animal waste .Human wastes contain concentrated population of coliform bacteria which includes Escherichia coli(E.coli) and strepto coccus species .These bacteria normally grown in the large intestine of humans where they are responsible for some food digestion and for the production on some vitaminK. These bacteria are not harmful in low numbers.Enormas ammount of human waste in water,increase the number of these bacteria which causes gastro - intestinal diseases.                                                     OXYGEN EXHAUST WASTES Oxygen exhaust wastes are organic wastes that can be degraded by aerobic bacteria (presence ...
Read more

POLLUTION,POLLUTANTS AND EFFECTS

Image
 DEFINATION OF POLLUTION Pollution is the effect of undesirable changes in our environment that have harmful effects on plants, animals and human beings. This  occurs when only short term economic gains are made at the cost of the long term ecological benefits for humanity. Natural phenomenon don't led to generate ecological changes that have been made by human beings. We have contaminated our air,water and land on which life itself depends with a verity of waste products.                                                 POLLUTANTS  Pollution is the effect of undesirable changes in our environment that have harmful effects on plants, animals and human beings. This  occurs when only short term economic gains are made at the cost of the long term ecological benefits for human beings. Natural phenomenon don't led to generate ecological changes that have...
Read more

EFFECT`S OF WATER POLLUTION

Image
 Water pollution occurs when unwanted materials enter in to the water ,that causes changes the quality of water.It is harmful to the environment and affects human health. According to world health organization(WHO) 80% of diseases are water borne and 3.1% of deaths occurs due to the un-hygienic and poor quality of water.However safe drinking of water is necessary for human health all over the world.                                                             WATER BORNE DISEASES Water borne diseases are caused by pathogenic microbes spread via contaminated water.Water borne disease including cholerae,Typhoied fever,Diarrhae,Ulcers,Hapatitis,Jaundice,Amoebiasis, malaria and Respiratory  tract infections. These diseases are very risk for lives of individuals are especially for humans ultimately leading to death.Water borne diseases...
Read more