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AWWA WQTC69353 Total Coliform and E. coli Occurrence: Site-Specific, but What Does a National Database Show?

Conference Proceeding by American Water Works Association, 11/01/2008

Messner, Michael J.; Rosen, Jeffrey S.

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This powerpoint presentation begins by providing a brief overview of the "37-State" Dataset, including state-level and system-level issues, summary statistics for 2005, data reduction, modeling, and predictions. Presentation summary of information provided by the National Dataset includes the following:useful information for the Federal AdvisoryCommittee;baseline status of monitoring and violations under theexisting Total Coliform Rule (TCR);assessments of how coliform occurrence and TCR-triggeredevents vary across systems of different size andtype; and,relative implications of changes to monitoring and otherfeatures of the TCR. Includes tables.