Stormwater Harvesting and Re-use at Darling Harbour, NSW

In 2002, the Sydney Harbour Foreshore Authority (SHFA) recognised that large impervious surfaces such as roofs and paving at Darling Harbour generate significant runoff that has the potential to be harvested and re-used. In 2003 a study investigated the feasibility of long-term schemes for the harvesting and re-use of stormwater at Darling Harbour. In 2004 a subsequent study identified short-term stormwater harvesting opportunities. These assessments are outlined. Water quality monitoring of a storm event from two possible harvesting sites was also undertaken in 2004 and is described. It concluded that the runoff quality was suitable for non-potable uses. SHFA has completed the detailed design and documentation of a number of initiatives including: the harvesting of runoff from a car park and the Exhibition Centre and its re-use; improvements to its irrigation control systems; and grey water recycling for five toilet blocks within Darling Harbour. These initiatives are outlined. It is concluded that the studies have heightened the awareness of SHFA staff to stormwater re-use opportunities at Darling Harbour. It is concluded that SHFA is also committed to the WSUD through its current retro-fitting of measures and its incorporation of WSUD measures in future redevelopment projects within the precinct.