Integrated Water Management

The Botany Area Plan project aims to provide an integrated strategy for managing water, wastewater, recycled water and stormwater infrastructure in order to provide safe, reliable and sustainable water services. These services will meet the needs of urban growth in the Botany area, while complying with the requirements of Sydney Water Corporation’s (SWC) operating and Environmental Projection Licences (EPLs).

The Botany area is close to Sydney's CBD. Redevelopment plans for the area are underway and some development has already started. The Botany area includes the infill growth areas of Redfern/Waterloo, Green Square, Wolli Creek, Cooks Cove and Sydney Airport. This project also takes these areas into account. In addition, the plan boundary incorporates the areas of Alexandria/Mascot, Botany Banksmeadow and North Arncliffe as they include minor growth pockets that needed to be considered.

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With the growth of Auckland City, the combined stormwater/wastewater system was exceeding capacity during rainfall events, resulting in pollution of the Waitemata Harbour. A conventional project model could not guarantee the level of service that Metrowater wanted for their customers during the separation process so they decided on an Alliance model – one that was strongly customer focussed. The project goal of cleaning up Auckland’s harbour was a philosophy of shared ownership and responsibility reflected in the principle – "it's ours".

Metrowater is Auckland City's water and wastewater utility and was established by Auckland City Council to provide water and wastewater services to over 142,000 homes and businesses, reaching 420,000 people across Auckland City.  The area of operation covers 153 square kilometres with a water and wastewater network of more than 3,600 km of pipes. Metrowater’s expectation is that their customers receive the highest quality, reliable water supply possible and that Auckland City’s wastewater networks are managed in a cost effective, environmentally sound and sustainable manner.

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Client: Smart Water Fund, representing Melbourne Water, City West Water, Yarra Valley Water, South East Water and the Department of Sustainability and Environment Melbourne is a rapidly growing urban centre that has experienced the risks and changes associated with climate variability, as an extended drought saw water supply dam levels fall to approximately 25% capacity during 2009.

Since 2009, issues surrounding both current and future water supplies and costs have become increasingly present in politics and the media.

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The existing town of Gracetown is built on 27ha of steeply sloping ground rising from the south-eastern shore of the north-facing Cowaramup Bay in Western Australia. The lowest part of the town is set back from the beach approximately 100m from the shoreline and is approximately 10m above sea level.

The existing town extends approximately 0.5 km up the slope to an elevation of approximately 90m Australian Height Datum. The underlying geology is characterised by shallow weathered limestone-based sands and limestone overlying a granite bedrock (at depths of approximately 20-30m below ground level).

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Client: South East Water

The development of a long-term water solution for Melbourne’s water supply is now underway. South East Water (SEWater), Melbourne Water and Southern Rural Water have gone into partnership to develop an Integrated Water Management (IWM) scheme for the south east of Victoria.

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Analysis of Integrated Water Management for Kalkallo:

Objective: to assess the sustainability of 11 water servicing options for the new industrial development at Kalkallo, Melbourne, Victoria using a multi-criteria analysis.

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Client: Gold Coast City Council (GCCC)

The Pimpama Coomera Waterfuture project is a Gold Coast City Council (GCCC) initiative investigating integrated urban water management. The aim is to drive more sustainable urban use of the region’s water resources.

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Improving the environmental health of the Murray River is a concern for all Australians. The Murray Darling Basin Authority regulates the river system. It offered to pay landholders affected by the release of water from storages.

GHD worked with the Murray Darling Basin Authority, the community and technical experts to identify the impact of released water on floodplain properties, to develop consistent assessment principles and to register the impact on title via easements.

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