|Water Proofing the South is a localised integrated water resource management strategy based in the City of Onkaparinga. The strategy seeks to provide alternative water sources such as recycled water and stormwater for traditional sources such as mains drinking water and groundwater so that overall water use in the region is sustainable economically, environmentally and socially.
Stage 1 of Water Proofing the South aims to deliver 3.8GL (3800ML) of agricultural, viticultural and urban reuse of 1.1GL (1100ML) of additional storage for the anticipated level of reuse (the Southern Urban Reuse Project).
SA Water, the City of Onkaparinga and the privately owned Willunga Basin Water Company are responsible for the delivery of the project. It is also supported by the Adelaide and Mount Lofty Ranges Natural Resource Management Board and the Flinders University Research Centre for Coastal and Catchment Environments.
The project involves constructing and installing pipework to transfer water from the Christies Beach Waste Water Treatment Plant to the Aldinga Waste Water Treatment Plant and a reticulation main connected to the dual reticulation network at Seaford Meadows.
The project aims to provide additional storage during winter to be used at peak periods during summer, as well as providing essential network balance for both the urban reuse scheme and use in the Willunga Basin.
Aldinga Wastewater Storage and Recovery Scheme
SA Water and the Willunga Basin Water Company are seeking approval for an Aquifer Storage and Recovery (ASR) Scheme at the Aldinga Wastewater Treatment Plant. The scheme will involve recycled water being stored in the aquifer (30-70m beneath the surface) in winter when irrigation demand is low. It would then be retrieved and used by irrigators during the summer months.
The recycled water to be stored in the aquifer will be sourced from the Christies Beach and Aldinga Wastewater Treatment Plants at a quality suitable for the irrigation of vineyards. The water quality will need to meet both the Department of Health and the Environmental Protection Agency (EPA) guidelines and approval conditions.
This project will enable SA Water to increase the use of recycled water from the Christies Beach Wastewater Treatment Plant, reducing the amount discharged to the Gulf St Vincent. The project will also benefit the River Murray by replacing potable supplies currently being used for irrigation.
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