Water & Wastewater Asia Jul/Aug 2018

WATER & WASTEWATER ASIA July / August 2018 16 / IN PERSON Keepyourwatermain dead ends in the clear Mueller Water Products is North America’s largest and only full-line supplier of potable water distribution products, which includes an extensive line of water flushing solutions. In this interview, we hear how two of Mueller’s customers address the challenges of water main dead ends. F lushing of water distribution systems is critical to ensure customers receive the best water quality. Aging infrastructure, poor quality pipelines and high temperatures are contributing factors to scale and biofilm build-up inside pipelines. An important maintenance task is to ensure water is thrusted through the system at a decent velocity to clear out stagnant water. Dead-end mains, typically in cul- de-sacs, at the end of rural streets, or even in a looped line, are known problem areas for water stagnation. Residential neighborhoods under construction and large underpopulated developments also often have slow- moving or stagnant drinking water. Together, Steve Lovato, system quality supervisor for Denver Water, and Brian Bianchi, senior project manager of Wilkinsburg-Penn Joint Water Authority, provided information on how to prevent water quality issues in the distribution system. Q: Why do distribution lines need to be flushed? Lovato: In general, distribution lines need to be flushed to maintain water quality in the system. Distribution systems are a complex system of pipes, pumps, valves and tanks. Sediments and deposits can accumulate naturally. Flushing helps the system maintain clarity, Mueller Water Products is North America’s largest and only full-line supplier of potable water distribution products

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