Abstract
At Northfield, a suburb of Adelaide, South Australia, a stormwater reuse scheme utilising a new dual-purpose wetland detention basin and an aquifer storage and recovery system has been developed. The wetland acts as a flood control basin and also provides water quality improvement. The aquifer is too saline for use as an irrigation water supply for parks and gardens; however, by storing low salinity stormwater in the aquifer during winter, a volume of low salinity water can be withdrawn and used the following summer. The water will also be used for topping up the wetland during the dry summers experienced in the region. Recharge water quality is required to either meet Australian criteria for irrigation water quality or be no worse than the existing groundwater quality. The economics of the system are favourable.
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