Indication of fecal contamination of water is due to presence of all, EXCEPT:
Correct Answer: Clostridium difficile
Description: The primary bacterial indicator recommended for this purpose is the coliform group of organism. Supplementary indicator organisms are: Fecal group: E.coli, Fecal streptococci and sulphite reducing bacteria Non Fecal group: Klebsiella aerogenes. Clostridium perfringens: The spores are capable of surviving in water for a longer time than organism of the coliform group & usually resistant chlorination. Ref: Park, 20th Edition, Page 630
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Social & Preventive Medicine
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