Mention any three ways by which potable water can get contaminated.
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Solution
Potable water i.e. drinking water can get contaminated by various ways such as:
When fertilisers due to runoff from agricultural fields mix with potable water.
Household wastage and sewage.
Oils from factories, machines, lubricants and refineries waste.
Dyes from chemical industries.
Synthetic detergents due to washing clothes near water bodies.
Industrial agents such as chlorine from paper industry, oil and grease from textile industry, fluorides from metal industry, lead from battery industries etc.