Onkaparinga Wastewater Treatment Plant

South Australia


TRILITY in partnership with the City of Onkaparinga, has redeveloped the city’s Septic Tank Effluent Disposal Schemes (STEDS) to enable the water to be used for the irrigation of vineyards in the McLaren Vale and Willunga regions.


Project name Onkaparinga Wastewater Treatment Plant
ClientCity of Onkaparinga
Type of contractDesign, Build, Finance, Operate and Maintain (DBFOM)
TechnologyIntermittent decant extended aeration
Design capacity3 ML/d
FacilitiesWastewater Treatment Plant (WTP) and pumping facilities
Existing community waste management scheme networks
Project term25 years
Capital costc. $4m
Project typeWastewater Management
* approximate

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