Microbial Ecology

, Volume 8, Issue 4, pp 325–333 | Cite as

Aeromonas sobria in chlorinated drinking water supplies

  • M. W. LeChevallier
  • T. M. Evans
  • R. J. Seidler
  • O. P. Daily
  • B. R. Merrell
  • D. M. Rollins
  • S. W. Joseph


Aeromonas species were recovered from over 27% of 183 chlorinated drinking water samples collected during an 18-month period. Sixteen of 20 isolates tested elicited a cytotoxic response by Y-1 mouse adrenal cells. None of the strains was either enterotoxigenic by the rabbit ligated ileal loop assay, exhibited piliation, or showed significant mannose resistant adherence to human buccal cells. TheAeromonas isolates were further identified to beA. sobria and were resistant to ampicillin and susceptible to chloramphenicol, kanamycin, streptomycin, and tetracycline. Total coliform levels did not correlate withAeromonas densities in distribution water. With 85% of the samplings,Aeromonas occurred in distribution water when no coliforms were detectable by either the membrane filter or most-probable-number techniques. A significant correlation (P<.001) existed between standard plate count levels andAeromonas.


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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • M. W. LeChevallier
    • 1
  • T. M. Evans
    • 1
  • R. J. Seidler
    • 1
  • O. P. Daily
    • 2
  • B. R. Merrell
    • 2
  • D. M. Rollins
    • 2
  • S. W. Joseph
    • 3
  1. 1.Department of MicrobiologyOregon State UniversityCorvallisUSA
  2. 2.Naval Medical Research InstituteBethesdaUSA
  3. 3.Department of MicrobiologyUniversity of MarylandCollege ParkUSA

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