Lead in drinking water affects homes built before the mid-1950s when residential water service pipes were commonly made of lead. Lead was also used to solder pipes together before 1990.

Apartment buildings and other multi-residential buildings with more than six units do not have lead pipes, regardless of age. Lead is too soft to handle the pressure needed for these types of buildings.

Water service pipes are owned by the homeowner and by the City (see this diagram).

Toronto Public Health recommends replacing both sides of the pipe as the best way to reduce your exposure to lead in drinking water and to protect your health. See "What to do if you have lead pipes" to learn more.

A licensed plumber can determine if your water service pipe is lead. They will likely need to enter your basement to make a visual inspection of the pipe.

If you live in a single family home built before the mid-1950s and would like to find out if your water service on the City side is lead, please visit the Capital Water Service Replacement Program website to determine if the pipes on your street have been replaced. If your street is not on this list, contact 311 to submit a record search about whether the City's portion of the pipe is lead, this process may take up to 30 business days.

The City also offers free lead testing to help determine if you have lead in your water.