Watermains are underground pipes that deliver a steady supply of fresh, clean drinking water to residents and businesses.

Fast Facts

  • There are more than 6,100 km of watermains in the City’s water distribution system.
  • Most watermains are metallic (made of cast iron or ductile iron).
  • The average age of Toronto’s watermains is 59 years:
    • 13% are 80-100 years of age,
    • 11% are more than 100 years old.
  • Watermain pipes are buried about 1.8 m deep, just below the the frost line.
  • The City experiences an average of 1,400 watermain breaks annually.