Our topic for today is Water Pollution. Contamination of water by harmful substances, which affects life on earth, is termed as water pollution. Due to human activities, our water is getting more and more polluted day by day. Household garbage is disposed into various sources of water. Many people perform their domestic activities like bathing, washing clothes and utensils, etc. in these sources of water. Also, industrial wastes are discharged into the water, leading to water pollution. Consumption of this polluted water leads to diseases like cholera, typhoid, diarrhoea, etc. in human beings. Polluted water also adversely affects the aquatic life. Thus, we need to make sure that we do not pollute water. Domestic activities such as bathing, washing clothes and utensils should not be done in rivers, lakes, ponds, etc. Household garbage should not be disposed in the various sources of water. Also, sewage and industrial waste water should be treated before discharging into the water.