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AWWA WQTC62497

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AWWA WQTC62497 Evaluating Low Chlorine Residuals in a Chloraminated Distribution System

Conference Proceeding by American Water Works Association, 11/01/2005

Cole, Scott; Edwards, Jerry; Harms, Lee

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The purpose of this slide presentation was to present factors affecting/resulting in low chlorineresiduals includingchloramines,water age,pipe material / condition, andnitrification. This presentation also presents two case studies where:low chlorine residuals were a problem;extended period simulation (EPS) modeling isused to evaluate water age; and, spatial analysis (GIS) is used to evaluate low chlorineresidual relative to pipe material. Parameters used to assess water quality included:water age;source trace;pipe material and condition; and,system operation.