Where is the water showing up?
Identify the unit, floor, ceiling, wall, or fixture involved. Say when you first noticed it and whether it is getting worse.
Montreal North · Montréal-Nord borough
Is water coming through a ceiling? Is a clogged drain backing up in the basement? Are you planning to replace a fixture? Plomberie Anjou serves Montreal North for repairs and scheduled work. In an apartment or plex, tell us where the problem appears and who can open the areas needed for the visit.

Before you call
A symptom in one unit may originate at a fixture, a pipe accessible elsewhere, or a shared drain. These three details help prepare a useful visit without assuming the cause.
Identify the unit, floor, ceiling, wall, or fixture involved. Say when you first noticed it and whether it is getting worse.
One slow sink, several gurgling fixtures, and wastewater on the basement floor point to different checks. Mention other affected units if you know of any.
Provide the entry code, contact person, and access to the basement or mechanical room. If another unit may need to be inspected, tell us who can make it available.
Follow the affected system
The place where a symptom appears does not always reveal the work needed. An on-site assessment helps identify the cause, the access required, and the scope of the repair.
A supply pipe, connection, or indoor valve may be leaking or may prevent you from isolating the water. Describe what is leaking and which valve you found. If the water service line is involved, the private piping and the City's exterior shutoff must be considered separately.
One slow fixture calls for a different assessment than wastewater backing up. If several drains react or the blockage keeps returning, mention that when you call so access to the right section can be planned.
For a leaking water heater or hot water tank that is no longer working normally, share its capacity and location if you know them. For scheduled installation work, describe the fixture, unit, and access constraints.
Not sure which service fits? Tell us what you see without having to diagnose it yourself.
The right point of contact
In Montréal-Nord, plumbing inside the building, the exterior water service box, and the sewer connection beneath the street follow different processes. Checking the cause helps determine what to request from the borough.
If the indoor valve is not enough and the exterior service box must be shut off, the request goes to the City. The building owner or representative must be present when it is shut off and turned back on. See the City's water service procedure and select Montréal-Nord for the applicable instructions.
The City says building owners are responsible for maintaining their sewer connection up to the municipal sewer, including the portion beyond their property line. City work on a structural failure under public property may be possible under specific conditions. The sewer connection repair procedure explains the checks and documents involved.
Work on a water service line or sewer connection may require a cutting or excavation permit. Before scheduling that project, check the requirements with the Montréal-Nord permit counter and the City's service connection permit instructions.
From the first call to the next step
House, apartment, condominium, or small business: the work depends on where the problem begins and which pipes are accessible. Access to the right section helps establish the source before repairs are recommended.
Address, building type, first sign, affected units, and what is happening with the water supply or drains.
The indoor shutoff, water heater, basement, cleanout, or another unit may need to be opened, depending on the problem.
The cause and proposed work become clearer on site. City coordination or a permit is handled separately if the findings call for it.
Is your address in Saint-Léonard instead? See that borough's page. For other locations on the island, browse our Montreal service area.
Customer experiences
Read the comments displayed by our reviews platform. Every plumbing situation is different and will be assessed according to the information provided and the condition of the installation.
Useful answers
These answers help you share the relevant facts. They do not replace an inspection of the installation.
No. Water may travel before it becomes visible. Tell us where the first damp spot appeared and which rooms or units are nearby; an on-site check can establish the source. If another unit or a shared pipe must be reached, the building contact can help arrange access.
The borough handles the exterior water service shutoff. If the indoor valve does not resolve the situation, mention that when you call and consult the City's instructions for requesting an exterior shutoff. Do not force an inaccessible or damaged valve.
Not necessarily. One slow fixture may have a local blockage. A recurring clog, several affected fixtures, or a sewer backup may call for a broader check; the method is chosen after the symptoms and available access are understood.
Share the address, building type, affected fixture or pipe, available access, and work you are considering. For a water service line or sewer connection, mention any City process already under way so the steps can be coordinated.
Plomberie Anjou · Montreal North
For a leak, sewer backup, or planned service, share the address, unit, affected fixtures, and the person who can provide access to the necessary areas. We can then direct the request based on what you describe.