Report a watermain break
If you notice water pooling or flowing above ground, or your water pressure drops suddenly, there may be a watermain break.
Stay clear of the area – flowing water can make the ground slippery or unstable.
On this page:
Report online
Use the online form Monday to Friday, 7 a.m. to 3:30 p.m. for a quick response from staff.
Include the location and upload photos if you can.
Call us after hours
Call us at 519-886-2310:
- after 3:30 p.m. on weekdays
- on weekends and holidays
Call us anytime for urgent issues.
City crews respond 24/7.
After you report
Staff review the report and send crews to inspect the site.
Crews make repairs as quickly and safely as possible.
What causes watermain breaks
Watermain breaks are usually caused by:
- extreme cold or sudden temperature changes
- pipes age or corrode over time
- ground shifts during freeze–thaw cycles
The city monitors for breaks and has a planned pipe replacement program.
Contact us
If you have questions about watermains or maintenance:
- call 519-886-2310
- email utilities@waterloo.ca (not monitored after hours)
After hours, your call goes to our on-call utilities team.