The American Water Works Association has launched a hypochlorite assessment tool for water utilities, allowing water managers to make treatment decisions based on scientific modeling. The tool will provide guidance on the expected levels of perchlorate and chlorate in stored bulk hypochlorite solutions. It is based on predictive algorithms derived from earlier research and local, user-defined inputs, including storage conditions, ionic strength, and ambient temperature.AWWA developed the tool using findings of a joint AWWA and Water Research Foundation report, “Hypochlorite - An Assessment of Factors that Influence the Formation of Perchlorate and Other Contaminants.” The report found that perchlorate is
