Wastewater is what residents and businesses flush down toilets and empty down sinks and drains. This material then travels through the sanitary sewer system to one of four wastewater treatment plants.

The safe and effective treatment of wastewater is important to the continued health and well-being of Toronto’s residents.

Toronto’s wastewater treatment process operates under strict regulations and meets or exceeds standards set by the province and federal government to protect public health and the environment.