Question

Coliform bacteria in the water is an indication of the presence of human feces.

Answer 1

Answer:

Coliform bacteria are unlikely to cause illness. However, their presence in drinking water indicates that disease-causing organisms (pathogens) could be in the water system. Most pathogens that can contaminate water supplies come from the feces of humans or animals.

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Answer 2

Fecal coliform bacteria are a subgroup of total coliform bacteria.

• They appear in large quantities in the intestines and feces of animals and in humans.

• To determine whether the given sample of water or waterbody is contaminated with feces, a test is conducted to check the presence of coliform bacteria.

• If coliform bacteria are present then the test says positive and it means the water is contaminated and when the test is negative it means the water is not contaminated with feces.