Wastewater Treatment Plant Lagoon Cleaning

Category Completed Infrastructure Projects
Project Start Date 31/03/2014
Expected Completion Date 30/06/2014
Proponent District Council of Mount Barker
Project Status Complete
Contact Person Infrastructure and Projects
Contact Work: 08 8391 7290
Email: council@dcmtarker.sa.gov.au

Sediment in the wastewater treatment plant lagoons will be removed and transported for stockpiling at Nairne location

The water effluent from individual properties’ septic tanks in Mount Baker, Littlehampton and Nairne is collected for treatment at the Wastewater Treatment Plant (WWTP) at Springs Road, Mount Barker.  The plant purifies the water to a high standard via a series of lagoons and biological treatment processes.  The treated water is then reused for the Laratinga Wetlands, irrigation of crops and vines, the watering of ovals and parks and for mineral processing.

A build-up of sediment in the lagoons (comprising accumulated dead algae and silt) is reducing the capacity at the WWTP and Council has approved a project to remove the sediment under the asset renewal plan in 2013/14.

Sediment will be collected from the bottom of the lagoons at the WWTP and transported in a semi-dry state to Council’s property at Ironstone Range Road, Nairne.

Approximately 6,000m3 of sediment will be stockpiled to a height of 1.2 metres to facilitate further drying and subsequent reuse as topsoil for Council projects. 

The sediment will be transported to the site from April to June 2014.  Additional truck movements between the WWTP and the Nairne property may be noticed.

WWTP Lagoon Sediment Removal Truck Transport Route(2064 kb)

All processes will be undertaken in accordance with the Environmental Protection Authority’s (EPA) ‘Draft South Australian Bio-Solids Guidelines (2009)’.  No observable odours are expected at the site boundary and all stockpiled materials are non-toxic in nature, with no potential for environmental impact.


6 Dutton Road, Mount Barker SA 5251
T 8391 7200