Ashbridges Bay Wastewater Treatment Plant

Located at 9 Leslie Street in Toronto’s east end, Ashbridges Bay is one of Canada’s largest and oldest wastewater treatment plants.

Highland Creek Wastewater Treatment Plant

Located at the mouth of Highland Creek, the plant is at 51 Beechgrove Drive in the Scarborough community of West Hill.

  • Located on 59 hectares
  • Serves a population of approximately 450,000
  • Has a capacity of 219,000 m³ per day
  • Began operating in 1956
  • Annual reports:

Humber Wastewater Treatment Plant

The City’s second largest wastewater treatment plant, located at 130 The Queensway, near the mouth of the Humber River.

  • Located on 45 hectares
  • Serves a population of approximately 680,000
  • Has a capacity of 473,000 m³ per day
  • Began operating in 1960
  • Annual reports:
  • Plant bypass information

North Toronto Wastewater Treatment Plant

Situated in the Don Valley at 21 Redway Road.

  • Located on 27 hectares
  • Serves a population of approximately 55,000
  • Has a capacity of 34,000 m³ per day
  • Began operating in 1929
  • Annual reports: