The coliform count in drinking water is done

To ascertain faecal contamination

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To assess hardness of water

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To determine the effect of chlorination

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To estimate the amount of suspended imputities

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Solution

The correct option is A To ascertain faecal contamination
Coliform bacteria are microorganisms that primarily found in the intestines of warm-blooded animals and thus, present in animal's faeces. By testing for coliforms, especially the Escherichia coli (E. coli), one can determine if the water has possibly been exposed to faecal contamination; that is, whether it has come in contact with human or animal faeces.
Therefore, the correct answer is option A.

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