Water Quality Awareness 101 10 | P a g e 8.1.2 Solutions  Keep sections of new pipe sealed at both ends until they are ready to be installed  Protect the ends of the existing open water main pipes from ingress until the repair is completed  Keep a positive flow of water out of the pipe (where possible) to prevent ingress  Properly excavate around the pipe repair site to minimise the possible entry of soil/water into the opened pipe sections  Maintain a de-watering system within excavations to minimise sediment contaminated water from entering into the pipe and consequently entering the water reticulation network  Ensure sediment control plans are developed before undertaking excavation works near drinking water reservoirs or catchments  Only use products for any installations or repairs in drinking water systems, that are compliant with the requirements of AS4020; this includes items such as lubrication, gaskets, spare parts etc.  Ensure all tools, equipment and other items that may come into contact with drinking water are cleaned and disinfected properly  Ensure proper disinfection by spraying all pipes and fittings with a concentrated sodium hypochlorite solution, especially if they have been used previously or have been kept in storage  Proactively identify and assess possible sources of cross contamination during the planning of any repair - examples include failure of back flow devices, leaking valves etc.  Implement disinfection and flushing procedures after all repairs  Ensure that a disinfectant residual is present and adequate before returning any drinking water main back into service Mains flushing following a repair and a chlorine residual test being completed at nearest downstream hydrant to the repair