What are the various contaminants present in wastewater? Give examples. [2 MARKS]

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Solution

Each point: 0.5 Mark

The various contaminants present in wastewater are:
i) Organic impurities: Human faeces, oils, animal wastes.
ii) Inorganic: Nitrates, phosphates, metals.
iii) Heavy metals: Mercury, lead.
iv) Microorganisms: Bacteria, viruses.

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