AWWA DSS69155

This powerpoint presentation begins by presenting study objectives that include the following: review strategies that have been used by utilities toinvestigate and resolve coliform occurrences;review some newer research trends associated withdetection and characterization of coliform occurrences; and,discuss new Distribution System Microbial IntegrityToolbox to enhance compliance with revised Total Coliform Rule (TCR). The presentation briefly overviews actions to revise the TCR, including assessments to identify sanitary defects. A summary is provided of tools reviewed in the AwwaRF Report #3116 Utility Case Studies. Topics covered include: strategies for investigating thesource and/or extent of coliformproblem; strategies for mitigatingcoliform occurrences; and, emerging research fromAwwaRF 3116 associated withcoliform detection andspeciation. Presentation conclusions indicate the following: more rapid identification and better characterization of coliformswill allow utilities to better determine sources/causes ofoccurrence such astreatment breakthrough,contamination event, orregrowth;can assess adequacy of existing O&M practices;utilities will begin to build libraries of isolates associated withdifferent events in their systems;will help focus and tailor responses to coliform events;will provide more confidence regarding integrity of distributionsystem and potential threats to public health; and, guidance available to help with TCR assessments and correctiveactions. Includes figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2008

Number of Pages:

32

File Size:

1 file , 3.3 MB