Duffin Creek Water Pollution Control Plant information

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Duffin Creek Water Pollution Control Plant is on the north shore of Lake Ontario in the City of Pickering. It operates as a partnership between the Regional Municipality of York and the Regional Municipality of Durham. The Plant is capable of treating 630 million litres of wastewater each day and serves the communities of York Region, the Town of Ajax and the City of Pickering in Durham Region. Holding ISO 14001 certification, the Plant operates to ensure the environmentally responsible treatment of wastewater.

As the wastewater plant with the second largest capacity in Ontario, the Plant has a dual responsibility: to operate a disciplined wastewater facility, as well as to protect the surrounding environment and water quality of Lake Ontario.

The Duffin Creek Plant is classified a Class 4 conventional activated sludge treatment plant, under the auspices of the Ministry of the Environment, Conservation and Parks (MECP). The facility has expanded over the years to accommodate the regions’ growth, with the third stage completed in 2014.

The plant is a complex engineering system of tanks, pipes, specialized equipment and facilities covering the equivalent of 400 football fields. The plant treats wastewater from 80% of the homes, businesses and industry in the area. Once treated, the clean water, known as effluent, is returned back to Lake Ontario.