Which of the following microorganisms is the most commonly used indicator organism for water quality testing?
A) Escherichia coli
B) Salmonella spp.
C) Shigella spp.
D) Campylobacter jejuni
E) Hepatitis A virus

Question

Quizplus · Accepted Answer

Of the options given, Escherichia coli (E. coli) is the most commonly used indicator organism for water quality testing. This is because E. coli is commonly found in the intestines of humans and animals and its presence in water can indicate fecal contamination, which is a potential source of pathogenic microorganisms. The other options, such as Salmonella spp., Shigella spp., Campylobacter jejuni, and Hepatitis A virus, are also indicators of fecal contamination, but are less commonly used for water quality testing compared to E. coli.

Which of the Following Microorganisms Is the Most Commonly Used