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Escherichia coli is used as an indicator organism to determine pollution of water with :-
A
Heavy metals
B
Faecal matter
C
Industrial effluents
D
Pollen of aquatic plants
Detailed Solution
Escherichia coli is a normal inhabitant of the human (and animal) large intestine and is passed out in faeces in very large numbers.
So its presence in a water sample shows contamination with sewage (faecal matter), and therefore the possible presence of intestinal pathogens (e.g. those causing cholera, typhoid and dysentery).
The coliform (E. coli) count is the standard test of drinking water quality. It does not indicate heavy metals, industrial effluents or pollen.
So E. coli is used as an indicator of pollution of water with faecal matter.
So its presence in a water sample shows contamination with sewage (faecal matter), and therefore the possible presence of intestinal pathogens (e.g. those causing cholera, typhoid and dysentery).
The coliform (E. coli) count is the standard test of drinking water quality. It does not indicate heavy metals, industrial effluents or pollen.
So E. coli is used as an indicator of pollution of water with faecal matter.