Watermains and valves


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Watermain flushing program

Over time iron and other minerals settle in watermains (large pipes that carry water underground)and which may cause discoloured water to flow into your home.

Our cleaning program improves water quality by flushing pipes with fresh water. No chemicals are used but you may notice water looks different as minerals are discharged. Visit our water quality page for tips on clearing discoloured water.

For questions about watermain flushing, contact our service centre during business hours.

2019 flushing schedule and updates

The table below is updated daily during the 2019 flushing season. The current schedule is tentative and subject to change. Check back often for updates.

Check the watermain flushing zones map (PDF) to see where we will be. 

Zone

Scheduled date

Status

4AI

April 23

Completed

4AJ

April 23, 24

Completed 

4AK

April 29, 30

Completed

4AL

April 29, 30, May 1

Completed

4AM

May 1, May 2

Completed

4AN

April 29, May 1, 2

Completed 

4AO

April 30, May 1

Completed

4AP

May 1, 2, 3

Completed

4AQ

May 2, 3, 6

Completed

4AR

May 2, 3, 6

Completed 

4AS

May 2, 3, 6

Completed 

4AT

May  3, 6, 7

Completed

4AU

May  6, 7, 8

Completed

4AV

May  7, 8, 9

Completed 

4AW

May 8, 9

Completed

4AX

May 9, 10

Completed

4AY

May 9, 10, 13

Completed

4AZ

May 10, 13, 14

Completed

4BA

May 13, 14, 15

Completed

4BB

May 14, 15, 16

Completed

4BC

May 14, 15, 16

Completed

4BD

May 15,16

Completed

4BE

May 15,16

Completed

4BF

May 16, 17, 21

Completed

4BG

May 17, 21, 22

Completed 

4BH

May 17, 21, 22

Completed

4BI

May 17, 21, 22

Completed 

4BJ

May 17, 21, 22

Completed 

Reporting a watermain break

Watermain breaks are caused by extreme weather, freeze/thaw cycles and old age. Signs of a problem include water pooling or flowing above ground or reduced water pressure in your home. 

If you suspect a break, contact us immediately at 519-886-2310.

Locating a water valve on your property

Every property has a water valve access point (also known as a shut-off valve). It is usually found in a front yard or driveway. The valve is the only way to turn off water supply for maintenance or valve replacement.

If the valve is not visible, crews may need to dig up your driveway to locate it. They will repair the area but will not replace or match the entire driveway.

Tips for valves on driveways

Before you do substantial work replacing or renovating your driveway:

  • request a free valve inspection at 519-886-2310 two weeks prior to starting work
  • contact Ontario One Call at 1-800-400-2255 to locate utilities
  • ensure your contractor doesn't pave or cover over the valve when doing work