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AWWA C651-2023

AWWA C651-23 Disinfecting Water Mains

The purpose of this standard is to define the minimum disinfection, sampling, and handling requirements when installing new mains or repairing a main break. These requirements identify when disinfection is required based on the level of public health risk. Included in this standard are requirements for disinfection of water mains, preparation and sanitary handling of water mains, application of chlorine, and sampling and testing for free chlorine residuals and the presence of coliform bacteria.

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AWWA: American Water Works Association [awwa]

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