Which organism is commonly used as an indicator of recent fecal contamination in drinking water?
Correct answer: A. Escherichia coli
- A. Escherichia coli
- B. Staphylococcus aureus
- C. Clostridium tetani
- D. Candida albicans
Explanation
Escherichia coli normally lives in the intestines and its presence in water suggests fecal contamination. Staphylococcus, Clostridium tetani and Candida are not the routine indicators used for this purpose.
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About Environmental Health and Sanitation
Environmental health examines how water, air, food, housing, waste, noise, chemicals and workplace conditions affect disease and well-being. Sanitation content includes safe water treatment and storage, sewage and solid-waste disposal, food hygiene, vector control and the distinction between personal cleanliness and broader public-health sanitation.
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