Name one microorganism whose presence in water indicates contamination by diseases causing microorganisms?
Fecal Coliform and E coli are two bacteria whose presence in water indicates contamination by diseases causing microorganisms.
Name the bacteria whose presence in water indicates the contamination with disease-causing micro-organisms.
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?