Implementing Resuspension Potential Method to optimise Yarra Valley Water’s mains cleaning program
Routine cleaning of water mains is commonly employed by water utilities around the world as a proactive means of managing common water quality issues. When employed correctly, mains cleaning can be effective in removing loosely deposited sediments that can cause water discolouration. Despite its long history in the water industry, water supply practitioners continue to use highly subjective methods to identify when, where and how often to clean their distribution network. This paper discusses the application of the resuspension potential method in the distribution network of Yarra Valley Water, Melbourne, Australia. The resuspension potential method is an objective tool for identifying the need for and the efficacy of mains cleaning. Furthermore, in this article the potential to find an optimum flushing frequency is discussed. The resuspension potential method has been applied by Yarra Valley Water since July 2005. Yarra Valley Water is now able to prioritize and target its mains cleaning efforts to achieve optimum outcomes.