MyWaterToronto

Checking for water leaks

Checking your home for leaks can make a difference to your water bill.

 

Leaks cost you money

 

a 1 m.m. diametre circle representing a size of a leakA hole this size wastes 0.77 m3 (170 gallons) in 24 hours-
$2.59/DAY or $310.70 in 120 DAYS

a 3 m.m. diametre circle representing a size of a leakA hole this size wastes 4.41 m3 (970 gallons) in 24 hours-
$14.83/DAY or $1,779.49 in 120 DAYS

a 5 m.m. diametre circle representing a size of a leakA hole this size wastes 16.27 m3 (3600 gallons) in 24 hours-
$54.71/DAY or $6565.14 in 120 DAYS

 

How to check for leaks

If you have a new meter

New meters automatically send readings to the city for your account. However, you can check your consumption and check for leaks using your new meter.  New meters are equipped with a leak detection indicator.  Check the Water Meter Program page for details about how to check your consumption and check for leaks using your new meter.

Other ways of checking for leaks

8 Hour Test

To perform a test on your entire household plumbing system, read your meter at some time during the day or night when water will not be used for at least the next eight hours. Record the reading. At the end of the eight hour period, reread the water meter and compare the reading to the original reading. If the readings are identical, your household plumbing system has no leaks. If the readings are different and no water has been used, this confirms that you have a plumbing leak and you should proceed to identify the plumbing fixture(s) that is the source of that leak.

Dye Test - Toilets

Leaks occur most commonly in toilets. You will need either food colouring or dye test tablets to perform a dye test on your toilets. Dye test tablets for toilets are available at various hardware and plumbing stores. To perform a dye test, place the tablet or a few drops of food colouring in the toilet tank. Do not flush. Wait and observe for 10-15 minutes. If the colour seeps through into the toilet bowl, this indicates a leak.

Please note, this test will not work if you use blue tablet fresheners.

Other sources of leaks

Inspect any fixtures that are connected to your water supply including:

  • Household taps (inside and outside the house)
  • Water-cooled air conditioners
  • Humidifiers
  • Underground lawn sprinkler systems

 


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