Question

why should we not use water present in rivers, lakes etc. for consumption directly? ​

Answer 1

Originally Answered: Why can't we drink water straight from a river or a lake? River and lake water normally contains solid and biological impurities which can cause infections of various types. That is why such water is filtered and treated with chlorine or ultraviolet light to kill the infective impurities

Answer 2

Answer:

❇ It is unsafe to drink water directly from lakes, ponds, streams and rivers as these open sources contain parasites and bacteria. If you consume any of these contaminants, you can get illnesses like giardia or cryptosporidium. This can cause symptoms like diarrhea, nausea, weight loss, low energy and gas.

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