To help maintain water quality, water mains need to be cleaned and flushed routinely. The water entering distribution mains is of very high quality; however, water quality can deteriorate in distribution mains if the mains are not properly managed. The nearby town of Manchester Water and Sewer Department is doing just this: they have begun flushing their water mains to remove sediment in pipes. This process is expected to last until early June.
Manchester town officials sent a message to all affected areas stating the process should last from 7:15 a.m. – 3 p.m. daily and homeowners and residents should refrain from using water during this time. If you experience discolored water once you run your faucets, it normally takes a few hours for water to clear.
Flushing is extremely important. As stated above, flushing maintains water quality in several ways. The ﬂushing removes sediments (mostly iron and manganese) from the mains. Iron sediment results from corrosion of iron pipes and valves used in the distribution system. Although iron and manganese do not pose health concerns, they can affect the taste, clarity, and color of the water.
Additionally, ﬂushing helps remove “old” water. Most distribution systems are designed with “loops” or interconnected grids, which keep water constantly moving around. However, some areas have dead-ends where water moves slowly and sits for longer periods of time. Such dead-end mains need to be ﬂushed to ensure the presence of fresh water with sufﬁcient dissolved oxygen, disinfectant levels and an acceptable taste and smell.
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