Craigie Groundwater Replenishment Trial Project (previously Beenyup)


On 21 September 2015, responsibility for water policy and resources was transferred to the Department of Agriculture and Water Resources - Administrative Arrangement Order made on 21 September 2015.

This website will be updated to reflect these changes.

Craigie, Perth

Australian Government Funding: $19,400,000.

About the project

Groundwater replenishment is an innovative concept where recycled water is treated to drinking water standards and recharged into groundwater supplies.

The project takes tertiary treated wastewater from the Beenyup Wastewater Treatment plant and further treats it by micro filtration, reverse osmosis and ultra-violet (UV) disinfection to produce very high quality recycled water. The recycled water is then injected into the Leederville aquifer at a location remote from existing drinking water bores where it will be further cleansed by natural processes. Detailed monitoring (over a number of years) of the water produced by the plant and in the groundwater will be undertaken in partnership with regulators, independent parties and researchers to ensure that the approach is safe.

Project benefits

The project provides the basis for building community confidence, gaining regulatory approval and demonstrating technical feasibility to deliver groundwater replenishment using recycled water as a new, water source option for Australia. The plant has the capacity to recycle 1.5 billion litres a year but if a full scheme was to go ahead, as much as 25 to 35 billion litres a year could be recycled from the Craigie facility.


The Groundwater Replenishment Trial and Visitor Centre was officially launched on 30 November 2010 following a rigorous commissioning and proving period and subsequent approval from the Western Australian Department of Health to recharge the aquifer. The report on the trial project is available below: