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City of TorontoMetro master licence15791Request service

Water shut-off valves

When a pipe lets go, your main valve is the one thing that stops the water. Many older valves seize or leak after years of never being touched. We replace main and fixture shut-offs so they work when you need them.

Call (416) 489-0000Request service
City of TorontoLicensed & insuredMetro master plumbing licence15791
1212 The Queensway, Etobicoke

Call us when

  • The main valve will not turn or will not fully stop the water
  • A valve drips at the stem or handle
  • You cannot find your main shut-off
  • Valves under sinks or behind toilets are stuck
  • You are leaving the home empty and want to be able to shut off the water
Old and new brass shut-off valves side by side

Find your main valve today

It is usually on the foundation wall where the water pipe enters the home, just before the water meter. Everyone in the house should know where it is.

A round handle usually turns clockwise to close. A lever usually takes a quarter turn. Test it gently, then open a tap to see whether the water stops. If it will not move, do not force it. Old valves can crack, and it is better to find out now than during a flood.

Fixture shut-offs

Small valves under sinks, behind toilets and at the washing machine let you stop one fixture without shutting off the whole house. They can corrode, seize or start leaking. We replace them and test them before we leave.

If the valve fails during a leak

Call 311 and ask for a water turn-off at the property line, then see burst pipes. Replacing a main valve also means the water supply has to be off, so we discuss how that will be done before starting.

We serve homes in Etobicoke, Mississauga, North York and nearby Toronto communities.

See the work

Watch Michael on the job

How to open a water line properly

Questions people ask

Who does the work

Michael from Waterworks in a finished shower

Waterworks is owned and run by Michael Yuffa, Owner and Chief Plumber, who has 46+ years of experience with Toronto homes, longer than most of the city's condos have been standing. About our team

  • Metro master plumbing licence 15791
  • WSIB Ontario workplace safety and insurance
  • Insured by Desjardins Insurance
  • Rated 4.8 from 551 Google reviews and 4.9 from 2,273 HomeStars reviews (October 2026)

Written from Waterworks’ service information and the sources named on this page. Last updated November 2, 2026.

Request service

Tell us what is happening and we will call you back to book. For leaks and backups, calling is faster.

(416) 489-0000
Evenings and weekends
Phones answered. Overnight calls booked first thing in the morning.
Office
1212 The Queensway, Etobicoke, ON M8Z 1R8

For example M8Z 1R8 or Mimico

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Plumbing help for your home.(416) 489-0000Request

Residential plumbing & drains

Let’s get your home sorted.

Tell us what’s happening. We’ll call you to arrange a visit.

For example M8Z 1R8 or Mimico

How urgent is it?

We only use this to reply about your job. See our privacy page.