PB role: concept development, environmental impact assessment, geotechnical investigation, process design, detailed design and documentation, assistance with tender assessment and contract award, construction supervision services, advice during the commissioning period

The Whyalla Water Reclamation Project will extract approximately 3 ML/d of wastewater from the existing sewerage network, and treat it to Class B effluent standard. Most of this water will be re-used for irrigation of approximately 35 ha for Whyalla Golf Course and Whyalla City Council.

PB provided a comprehensive multidisciplinary service to SA Water on this project.

The main drivers for the scheme were SA Water’s Environmental Improvement Plan and strong community support for a reuse scheme. Environmental benefits of the scheme include:

• a dramatic reduction in the volume of effluent discharged to a mangrove and marine environment, with a period of no discharge into Spencer Gulf of 3–5 months per year
• dramatic reduction of nitrogen and phosphorous loads to the head of Spencer Gulf
• reduced demand for water from the Murray River.