Water is one of the most important natural resources known on earth. Before water can be described as potable, it has to comply with certain physical, chemical and microbiological standard, which are designed to ensure that the water is potable and safe for drinking. Potable water is defined as water that is free from contaminants, such as disease causing microorganisms and harmful chemical substances. The importance of potable water supply in the socio- economic life of the public cannot be over emphasized. Often, source and portability of water supply reflects on the health conditions of communities. Water meant for consumption should be free from pollution, acceptable and safe. Indeed the quality of the water sources should not exceed the maximum limit specified in water quality guidelines. It is also a key parameter influencing survival and growth of microorganisms in food and other microbial environments. The need to define the quality of water has developed with the increasing demand for water which is suitable for specific uses and conforms to desired quality.
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