Charlotte, NC — Charlotte Water is conducting an ongoing unidirectional flushing (UDF) program throughout four water districts to lower the levels of iron and other particulates within their potable water distribution system. This process is accomplished by systematically closing valves to get the water flowing at a high velocity in one
direction to scour the inside of the pipeline and flush the particulates out of the system through the hydrant(s).
Unfortunately, they lacked a control point within an area to achieve the desired outcome. The program required the installation of a valve in a highly populated residential area that also contains a high school. However, the city wanted to avoid service disruptions to the neighborhood. To read their full story, download the project brief.