Association of microorganisms with surfaces in distribution systems

Diane S. Herson, Dana R. Marshall, Katherine H. Baker, Hugo T. Victoreen

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Studies were conducted with particles obtained from a drinking water distribution system. Upon nutrient addition, both the indigenous attached population of bacteria and added coliforms accumulated in association with the particles. This dramatic increase in numbers of organisms associated with the particles was not reflected in plate counts of the particle-containing water. These results indicate the potential role of surfaces in harboring organisms that are not detected by sampling the bulk water - until the bacteria are suddenly released into the water.

Original languageEnglish (US)
Pages (from-to)103-106
Number of pages4
JournalJournal / American Water Works Association
Issue number7
StatePublished - 1991

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Water Science and Technology


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