Environmental Monitoring and Assessment

, Volume 130, Issue 1–3, pp 215–220 | Cite as

Serogroups of Escherichia coli from Drinking Water

  • P. W. RamtekeEmail author
  • Suman Tewari
Original Article


Fifty seven isolates of thermotolerant E. coli were recovered from 188 drinking water sources, 45 (78.9%) were typable of which 15 (26.3%) were pathogenic serotypes. Pathogenic serogroup obtained were 04 (Uropathogenic E. coli, UPEC), 025 (Enterotoxigenic E. coli, ETEC), 086 (Enteropathogenic E. coli, EPEC), 0103 (Shiga-toxin producing E. coli, STEC), 0157 (Shiga-toxin producing E. coli, STEC), 08 (Enterotoxigenic E. coli, ETEC) and 0113 (Shiga-toxin producing E. coli, STEC). All the pathogenic serotypes showed resistance to bacitracin and multiple heavy metal ions. Resistance to streptomycin and co-trimazole was detected in two strains whereas resistance to cephaloridine, polymixin-B and ampicillin was detected in one strain each. Transfer of resistances to drugs and metallic ions was observed in 9 out of 12 strains studied. Resistances to bacitracin were transferred in all nine strains. Among heavy metals resistance to As3+ followed by Cr6+ were transferred more frequently.


Thermotolerant E. coli UPEC ETEC EPEC STEC Antibiotic resistance 


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Copyright information

© Springer Science + Business Media B.V. 2006

Authors and Affiliations

  1. 1.Department of BiotechnologyAllahabad Agricultural Institute (Deemed University)AllahabadIndia

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