Hochelaga-Maisonneuve · Mercier-Ouest · Mercier-Est
A pipe is leaking, wastewater is backing up, or an installation needs to change? Plomberie Anjou serves Montréal’s Mercier–Hochelaga-Maisonneuve borough. Tell us what is affected so we can help prepare a repair, an investigation or planned plumbing work.
Your full address, the affected unit or business, whether other fixtures are affected, and who can provide access to shared plumbing areas.
Where to start
Where water appears does not always reveal which pipe is involved. These details help distinguish a repair confined to one fixture from a problem that may affect the rest of the building.
Note where the water is coming from. If the fixture’s shutoff valve is clearly identified and safely accessible, close it without forcing it. Tell us whether the stain is on a ceiling, an exposed pipe or near a hot water tank. If water reaches electrical equipment, stay clear and follow Hydro-Québec’s safety guidance.
Is only one fixture draining slowly, or are several reacting at once? If wastewater is backing up, stop using connected fixtures until the situation is assessed. The cause and the right method for unclogging a drain cannot be determined over the phone.
Before moving a fixture, the existing supply lines, drains, venting and access need to be checked. In a multi-unit or mixed-use building, tell us which areas must remain in service during the work.
One unit, a business or shared piping
In a duplex, triplex or building with several units, water can appear some distance from its source. A ceiling stain beneath a kitchen, for example, may require checking more than one connection and the drain route before opening a surface.
A toilet, sink and floor drain provide different clues. We ask which fixtures are affected, when the problem began and on which floor.
A shutoff valve, plumbing stack, cleanout or utility room may be under a landlord’s or building manager’s control. If possible, arrange access and authorization before the visit.
Once the cause is checked, the repair may be local or require wider coordination. A drain camera inspection may help when the pipe and symptoms warrant it.
Plumbing services
The service depends on the symptom, the fixtures involved and access to the pipe. These options cover homes, rental units and commercial spaces according to the work required.
A supply pipe, fitting or valve may need a targeted repair. If the exterior water service box must be shut off, that work needs to be coordinated with the borough rather than handled by a property owner.
A fixture clog, a blockage farther along the sewer connection and a wastewater backup call for different checks. Camera inspection depends on access and what the initial assessment finds.
A leaking electric water heater, a toilet supply line or a tap that will not close can disrupt normal use of a unit. The model and location of the fixture help us prepare the visit.
For a kitchen, bathroom or business space, describe which fixtures will move and what other parts of the building are involved. We can then clarify the plumbing work within the larger project.
Three neighbourhoods, one borough
The City of Montréal’s borough overview (in French) distinguishes Hochelaga-Maisonneuve, Mercier-Ouest and Mercier-Est. If you say only “Mercier,” add the neighbourhood and street address so we can identify the right part of Montréal.
A neighbourhood name does not tell us what kind of property you have. What matters is whether work is confined to one unit, requires access to a common area or involves a water shutoff affecting other occupants.
For a leak between floors or work in a plex, identify the affected unit, anyone who must be notified and any known access to the basement or plumbing stack.
This area includes Guybourg, Longue-Pointe and Louis-Riel. In a mixed-use or multi-unit building, tell us whether the problem is interrupting a residence or a business.
Also known as Tétreaultville, this neighbourhood is part of the same borough. Let us know whether you need an indoor repair, help with a basement drain or an assessment for work on an exterior connection.
Work and responsibilities
Most problems inside a building begin with an assessment of private plumbing. An exterior service box, a sewer connection beneath the street or some planned work calls for a separate municipal process.
If the indoor valve cannot isolate the pipe that needs work, ask the borough to shut off the exterior water service box. The owner or their representative should coordinate this with the plumbing visit.
See the City’s water service procedure →The City states that owners maintain their connection up to the municipal sewer. For a structural defect on public property, a borough repair request may be possible under specific conditions and may require an inspection report and video.
Read the City’s eligibility criteria →The full scope determines which approvals to check. The City explains permits for water and sewer service connections separately from permits that may apply to the broader interior renovation.
Check interior renovation requirements →For an active leak, call and describe the situation first. Municipal timing, fees and approvals depend on the type of request and must be confirmed with the City.
Choose the page for the address where service is needed.
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Common questions
These answers help you prepare for the call. An on-site assessment is still needed to establish the cause and confirm the work.
No. Water may travel along a structure or pipe before it becomes visible. Tell us which rooms and floors are affected and when the stain appears; the plumber can check accessible points before drawing a conclusion.
Not automatically. If a blockage returns, affects several fixtures or appears to be farther along the sewer connection, a camera inspection may help reveal the pipe’s condition after initial checks. Access and the purpose of the inspection need to be confirmed.
The City handles shutoffs at the exterior water service box. The owner or an authorized representative should contact the borough and coordinate a visit with the plumbing work.
Montréal does not issue a municipal permit for plumbing work itself, but the larger renovation may require one if it changes the building or its layout. Provincial plumbing rules still apply. Check the City’s renovation guidance for your project and tell us which fixtures you plan to move.
Tétreaultville is in Mercier-Est, while Longue-Pointe is in Mercier-Ouest. Provide your full address, unit or business name and a number where we can reach you to confirm service at the exact location.
Request service
Active leak, sewer backup, hot water tank or a planned project: include your Mercier–Hochelaga-Maisonneuve address, the affected unit and the available access. We will confirm the next step based on the situation.
