Isolate it safely
For a visible leak near a washing machine, sink or toilet, close that fixture’s valve if you can reach it safely. If water keeps flowing, tell us whether the indoor main shutoff can be reached without crossing a hazardous area.
Need a plumber in LaSalle for an emergency plumbing problem, a leak near the washing machine, a drain backing up or an electric water heater that needs attention? Tell us what is happening and how to reach the affected plumbing. Plomberie Anjou also handles fixture replacement and planned plumbing requests in the borough.
If water is still flowing, close an accessible shutoff valve only when it is safe to do so. Mention any water near outlets or electrical equipment.

A connection that drips and can be isolated calls for different preparation from a pipe sending water into several rooms. If you need an emergency plumber in LaSalle, explain what is happening now, what you have been able to shut off and whether other units or fixtures are affected.
For a visible leak near a washing machine, sink or toilet, close that fixture’s valve if you can reach it safely. If water keeps flowing, tell us whether the indoor main shutoff can be reached without crossing a hazardous area.
Is sewage coming up through a floor drain, or are several fixtures reacting at once? Limit water use and avoid contact with wastewater. Tell us which fixtures are affected without trying to diagnose the sewer line yourself.
An apartment, a common room and a commercial unit may need different access arrangements. Let us know who can open the affected room, basement or space containing the water shutoff.
The symptom helps shape the visit. Our service pages explain possible work; an on-site assessment confirms the cause and the appropriate repair.
Washing machine connection, faucet, exposed pipe or faulty shutoff valve: tell us where water appears and whether it stops when a valve is closed.
One slow fixture and several drains reacting at once can point to different problems. Drain cleaning and sewer backup assessment follow the signs observed.
A leaking hot water tank, damp connection or lack of hot water needs a clear source check before discussing a repair or replacement.
Toilet installation, faucet replacement or a bathroom plumbing change: describe the fixture, available access and your preferred timing.
The City of Montréal’s LaSalle neighbourhood profile (French only) describes several kinds of residential and commercial settings. It does not tell us the condition of the plumbing at any address; it helps frame useful access questions before a visit.
In a house or duplex in this area, check whether the shutoff, laundry area or affected pipe is in a shared basement. Will another occupant need to provide access?
For an apartment in a taller building, distinguish what is inside the unit from what may be in a service room or shared stack. Notify building management if common-area access may be needed.
For a business, identify which fixtures can be taken out of service, who authorizes entry and whether work can be planned around the premises’ operations.
If a repair requires closing the exterior water service box, the shutoff must be coordinated with the borough. The City says the building owner or their representative can request it and must be on site when water is shut off and turned back on.
For a major leak or water entering the building, explain the situation to Plomberie Anjou and contact 311 for the municipal part. Do not attempt to operate the exterior valve yourself.
Share your LaSalle address, building type, what you can see and who can open the affected area. For an active emergency, calling lets you explain what is happening directly. For a replacement or installation, you can also use the contact form.
Water spreading or sewage backing up: call. Planned work: send the details and your availability.
Published reviews describe individual experiences. They do not establish the cause of your problem or the availability of a visit in LaSalle.
Choose the page for the address where the plumbing work is needed.
Practical decisions about the fixture, the building and access. You do not need to know the exact cause before contacting us.
If water keeps flowing, reaches another room or cannot be isolated safely, call and explain the situation. If the connection is isolated and the flow has stopped, describe the leak so an appropriate repair can be arranged.
Notify the person responsible for the building and tell us who can provide access. Do not force a door or operate a valve that does not belong to your unit.
Note which fixtures were used, whether other drains react and whether the water appears to contain sewage. Stop using the affected fixtures and report an active backup when you call.
Yes. You can request a visit for a plumbing fixture, an electric water heater or other planned plumbing work. Provide the address, project details and your availability so the next step can be arranged.
The City of Montréal says the building owner or their representative requests the municipal service and must be present for the shutoff and reopening. Mention this requirement if the planned work involves the water service line.