Water Corporation of Western Australia

Australia’s first full-scale Groundwater Replenishment Scheme is located in Perth’s northern suburbs, in Craigie, Western Australia. It started recharging recycled water to Perth’s deep aquifers in 2017.

Wastewater undergoes rigorous treatment at the Beenyup Wastewater Treatment Plant before reaching an Advanced Water Recycling Plant. At the Advanced Water Recycling Plant, it undergoes further treatment processes that included ultrafiltration, reverse osmosis and ultraviolet disinfection. This removes chemicals and micro-organisms to meet Australian guidelines for drinking water.

Due the impacts of climate change on Perth, a decision was made in July 2016 to expand the Groundwater Replenishment Scheme. This Scheme will provide a new climate-independent water source to boost much needed drinking water supplies in Perth. Construction of the new Advanced Water Recycling Plant started in late-2017 and was completed in late-2019. The new offsite recharge and monitoring bores were drilled between late-2017 and early-2018 with the above-ground bore infrastructure constructed in 2019. The pipeline was constructed in sections from early-2018 to mid-2019.

The Stage 2 expansion infrastructure has been constructed and is currently being commissioned and tested. Stage 2 is expected to become fully operational in 2022.


Image of wastewater treatment process