A coliform is a group of bacteria, found in human intestines, whose presence in water indicates contamination by disease-causing microorganisms.
Based on the above graph, which of the given cities should a couple prefer to live in?
Rishikesh
Dalmau
Bithoor
Howrah
Rishikesh
Rishikesh has the minimum annual mean count of coliform among the given cities so it is most prefered.