Characterization of a Drinking Water Distribution Pipeline Terminally Colonized byNaegleria fowleri

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Abstract
Free-living amoebae, such as Naegleria fowleri, Acanthamoeba spp. and Vermamoeba spp., have been identified as organisms of concern due to their role as hosts for pathogenic bacteria and as agents of human disease. In particular N. fowleri is known to cause the disease primary amoebic meningoencephalitis (PAM) and can be found in drinking water systems in many countries. Understanding the temporal dynamics in relation to environmental and biological factors is vital in order to develop management tools for mitigating the risks of PAM. Characterizing drinking water systems in Western Australia with a combination of physical, chemical and biological measurements over the course of a year showed a close association of N. fowleri with free chlorine and distance from treatment over the course of a year. This information can be used to help design optimal management strategies for the control of N. fowleri in drinking water distribution systems.
Funding Information
  • Commonwealth Scientific and Industrial Research Organisation
  • Water Corporation

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