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About – Island Water Treatment Plant

Where does the water come from?

One of four City water treatment plants, Island takes raw water from Lake Ontario, then cleans, disinfects and converts it into sate potable (drinking) water for final pumping into the City’s distribution system.

Deep Lake Water Cooling

Island also plays a major role in the Deep Lake Water Cooling project, partnership between the City of Toronto and Enwave District Energy Limited.

Fast facts

  • Located on Centre Island
  • Site of Toronto’s first water treatment plant
  • Operates 24/7 in an environmentally responsible and cost-efficient manner
  • Only accessible by ferry or marine transportation
  • Supplies extremely cold water to the Deep Lake Water Cooling project

2011 Statistics

Output Water production
Percentage of total water produced
Number of days operated in 2011
Average daily production
Maximum day production
Maximum water production date

94,106 million litres
20%
352 days
248 million litres
392 million litres
June 21, 2011