Hunter Water’s $10m wastewater treatment works reach milestone

wastewater treatment

Hunter Water is investing more than $10 million to upgrade the Toronto Wastewater Treatment Works (WWTW) in New South Wales to meet local population growth, reduce odour and protect the environment.

Following a successful overhaul of the WWTW’s high-voltage electrical equipment, the project has reached a key milestone with a new, state-of-the-art odour control unit (OCU) at the facility now up and running.

Glen Robinson, Hunter Water Executive Manager Customer Delivery, is confident the upgrades will provide lasting benefits to the community.

“These upgrades to Toronto WWTW, in particular, the new state-of-the-art odour control unit, will significantly improve the capture and treatment of wastewater-related odours,” Robinson said.

wastewater treatment
Toronto WWTW odour-control unit. Image: Hunter Water

“As a business, we’re doing everything we can to minimise community impact from our assets – particularly odours.”

The upgrade to Toronto WWTW has involved three stages over three years, starting in August 2021 and is slated to be complete by the middle of 2024.

“We want to ensure the treatment works can continue to service the local community into the future. These upgrades will increase capacity and performance, reduce odours, and meet modern safety and environmental standards,” Robinson said.

“We will also be able to use treated recycled water onsite, reducing our reliance on drinking water to service the WWTW’s process requirements.”

With the odour control unit project complete, Hunter Water teams are now upgrading the facility’s aeration tanks to enable the treatment of wastewater to a consistent standard within the plant.

Built in 1992, the Toronto WWTW currently treats six megalitres per day and can handle wastewater from a population of up to 42,000 people.

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