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Main Title Strategies for monitoring the bacteriological quality of water supply in dristribution system /
Author Geldreich, Edwin E. ; Goodrich, J. A. ; Clark, R. M.
Other Authors
Author Title of a Work
Goodrich, James A.
Clark, Robert M.
CORP Author Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Risk Reduction Engineering Laboratory,
Year Published 1989
Report Number EPA/600/D-89/123
Stock Number PB90-112632
Additional Subjects Distribution systems ; Water distribution ; Bacteria ; Water pollution ; Water supply ; Coliform bacteria ; Magnitude ; Water storage ; Monitoring
Library Call Number Additional Info Location Last
NTIS  PB90-112632 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 29 pages ; 28 cm
Monitoring strategies for characterizing the bacteriological quality of water in the distribution system require a complete understanding of a variety of interrelated aspects that include treated water quality, water supply retention in storage and infrastructure deterioration in the distribution system. A study of field data from several water supply utilities was used to highlight some innovative interpretations of compliance monitoring data. Major perceptions include: The use of a 5 percent coliform frequency of occurrence limit highlights compliance significance in those situations where there are clusters of positive samples containing less than 4 coliforms per 100 mL. Unfortunately, this presence/absence concept does not provide any indication of the magnitude of a contamination event.
"To be presented at the AWWA Annual Meeting, June 18-22, 1989, Los Angeles, CA." "EPA/600/D-89/123." Microfiche.