Transcription of Eliminate Dead-End Water
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Eliminate Dead-End Water
20 Opflow November 2011 Galvin is sales and marketing vice president with Kupferle Foundry ( ), St. pOtable Water in distribution dead-ends can pose a serious health problem for consumers. as this Water ages, disinfectant residuals decline and disinfectant by-products (dbps) increase, creating health risks for consumers and regulatory headaches for distribution and Water quality THREATS distribution and Water quality managers can mitigate the effects of uncirculated Water in their distribution systems by rec-ognizing the Residual Levels. as uncirculated Water stands in Water -main dead-ends, disinfectant residual levels begin to decrease within 200 hours, or about days, as illustrated in the accompanying figure. depending on initial disinfectant levels, Water may become unsafe within 30 days or less.
www.awwa.org/opflow November 2011 Opflow21 may be hazardous. For example, if the number of days needed to turn over the uncirculated water in the pipe is greater
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