Social & Preventive Medicine Which of the following is the most reliable bacteriological indicator of water pollution: September 2010, March 2012, March 2013 (a, b, f) A Fecal streptococci B Salmonella typhi C Escherichia coli D Clostridium tetani 💡 Explanation Which of the following is the most reliable bacteriological indicator of water pollution: September 2010, March 2012, March 2013 (a, b, f) ✓ Correct Answer: C. Escherichia coli