The plant was built in 1994 to cater for an equivalent population of 24,000 people with all treated effluent pumped to Eraring Power Station for reuse.
By late 2008, the WWTW was fast approaching its capacity and needed an upgrade to ensure it continues to operate reliably and in the future and can cater for projected population growth within the Dora Creek WWTW catchment.
Improvement work began in late November 2008 and was completed in September 2010, finishing on time and on budget at a total cost of $32.4 million.
The work involved a combination of upgrades to existing process units, the construction of new ones and an extension of the existing effluent main from Eraring to the Toronto wastewater system.
As a result of the upgrade the recycled water capacity of the plant has been increased for Eraring Power Station.
The extension of the effluent main means that excess effluent that cannot be used by Eraring can now be transferred to Belmont Ocean Outfall as further growth occurs.
Dora Creek WWTW now caters for an equivalent population of 48,000 people, which will allow us to meet the future needs of the local community while continuing to maintain a high standard of treatment.