Diarrhea, Dysentery, Amoebisis, Cholera, Typhoid, Jaundice and Hepatitis all these life-threatening diseases are called "Water Born Infectious Diseases". These diseases are caused and spread by drinking water contaminated with the harmful bacteria.
In most of the developing countries more than 30% deaths are due to infectious diseases and out of which 50-60% is from water born diseases. Scantly and irregular rainfall, lower water level and rising population has created problem of availability of drinking water.
To provide the drinking water to rural and urban area, Government of these countries are making all possible efforts and implementing number of water supply schemes. In rural areas tube wells, small dams and river are main source of drinking water. Creating drinking water sources is one task and to provide safe drinking water is different.
Monitoring the quality of drinking water all over country especially in rural areas is a difficult task and needs huge capital expenditure. Drinking water should be free from harmful chemicals namely fluoride, nitrate, arsenic etc. and also from bacteria producing water borne diseases.
This makes it necessary that drinking water should be tested for harmful bacteria and region specific chemicals.
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