Plumbing in Montreal · 24/7 emergency requests
Montreal plumber for an emergency, repair or project
Active leak, clogged drain, sewer backup, faulty water heater or planned plumbing work? Plomberie Laval serves areas of Montreal for residential and commercial plumbing needs. The address, building type, symptoms and access to the plumbing help establish priority and prepare the appropriate service call.
- 24/7 plumbing emergencies
- Residential and commercial
- RBQ : 5688-9025-01
- CMMTQ member
Montreal boroughsLinked to their local page
Emergency requestsA direct line at all times
Two settingsResidential and commercial
Verifiable companyRBQ licence and CMMTQ membership
Start with what you see
What is the right first step?
You do not need to diagnose the faulty component. Visible signs help establish priority, but the cause and scope of the work are confirmed after the affected system is inspected.
Water is spreading and cannot be isolated
A continuous leak, burst pipe or draining water heater can quickly affect finishes, neighbouring units or electrical equipment.
Call nowA single sink, tub or basin is draining poorly
The blockage may be close to the fixture. Tell us which fixture is affected, whether the water drains slowly and what has already been tried.
View drain cleaningSeveral drains react or wastewater backs up
Gurgling, several affected fixtures or a backup can direct the inspection toward a stack or the main drain.
Explore diagnosticsThe water heater is leaking or not operating normally
Tell us where the tank is located, the signs you see, whether it is accessible and whether water is still escaping.
View water heater serviceYou are changing a bathroom, kitchen or commercial space
The number of fixtures, pipes to move, access, water shutoffs and authorizations can change the scope of the project.
Plan the workOne symptom can lead to more than one service. A recurring blockage may warrant a camera inspection; a leak near the water service entrance may require checking the supply line; a damp basement after rain is not automatically treated as a sewer backup.
During an emergency
Reduce the risk without improvising a repair
Take action only if the area and shutoff are safely accessible.
- Close the fixture shutoff valve or the indoor main water supply if you can do so safely.
- In case of a sewer backup, stop using fixtures that discharge water into the drainage system.
- Keep away from any electrical equipment or panel that may have become wet.
- Call and provide the address, floor, building type and how the problem is changing.
Emergency, diagnostics, protection and projects
Plumbing services in Montreal
Each link opens a specific service page with the related symptoms, the plumber’s role and the information to prepare before the service call.
Drain cleaning and unclogging
For a sink, toilet, tub, floor drain or several fixtures that are draining poorly.
View serviceDrain camera inspection
To document a recurring blockage, defect, tree roots, collapsed section or the condition of an accessible drain line.
View inspectionSewer line excavation and repair
For a damaged exterior pipe or work requiring greater access, after the problem is located and the required authorizations are checked.
View sewer line workWater leak repair
For a visible or suspected leak at a faucet, valve, fitting, pipe, wall or ceiling.
View leak repairWater heaters
Installation, replacement or inspection of a water heater that leaks, heats poorly or shows unusual signs.
View water heater serviceBackwater valves
Inspection, installation or replacement to reduce sewer-backup risk according to the fixture and drainage layout.
View backwater valve serviceSump pumps
Installation, maintenance or replacement of a pump suited to the sump pit and the way water reaches the basement.
View sump pump serviceWater service line replacement
For a private water supply line that needs replacement, after its material, route, responsibilities and applicable procedures are confirmed.
View service line replacementPlumbing fixtures and faucets
A toilet, basin, sink, tub, shower, faucet or other fixture to install or replace with its connections.
View installationsResidential plumbing and renovations
Plan the plumbing for a kitchen, bathroom or alteration involving several fixtures and pipes.
View renovation plumbingCommercial plumbing
Repairs, maintenance and planned work according to access, operating hours and building equipment.
View commercial plumbingDescribe the problem, not the solution
Tell us what you see, where the problem is and what changes when you use water. We will start with the right service path.
Request serviceSame problem, different access conditions
The method also depends on the building
In Montreal, the right diagnosis must account for shared pipes, floors, water shutoffs, the people who must be notified and actual access to the plumbing.
Identify what is private or shared
A stack, water service line or valve may serve several levels. Tell us which unit is affected, the fixtures involved and which shutoffs are accessible.
Coordinate common elements
A water shutoff, mechanical-room access or shared pipe may require coordination with the condo syndicate or property manager before certain work.
Prepare access and the service history
Contact details for the person on site, affected units and previous service work help avoid an unprepared visit.
Limit the impact on operations
Access hours, occupancy, specialized equipment and required shutdowns affect how the service call is planned.
Private and municipal responsibilities
When is it the plumber’s responsibility—and when is it the City’s?
The plumbing visible inside a building is only part of the water’s path. The City and the owner are not responsible for the same portions of the service connections. A plumber can diagnose and document a private-side problem; the City remains responsible for its equipment and determines whether the conditions for municipal intervention are met.
The City indicates that the owner maintains the sewer service connection up to the municipal sewer, including the portion beneath public property. However, operation of a municipal exterior water valve and certain authorizations must go through the City.
Private fixture or pipe
- Leak, faucet, toilet, water heater or interior piping.
- One fixture or part of the building still has running water while another area is affected.
- Private drain, sewer service connection to unclog or problem to diagnose.
- Inspection, repair, installation or planned project.
Municipal equipment or service
- No water flows anywhere in the building and the outside portion may be involved.
- The exterior water valve must be located or shut off for the work.
- A structural defect is suspected in the public portion of the system.
- A municipal request, authorization or permit must be confirmed.
Montreal-specific guidance
Four local checks that can change the project
These official resources do not establish a diagnosis remotely. They help clarify responsibilities, procedures and risks to check before authorizing the work.
Heavy rain, backwater valves and the basement
Pressure on the system during violent storms can contribute to a sewer backup. The location, accessibility and maintenance of backwater valves should be checked; a sump pit and pump address a different water path.
City guidance on backwater valvesWater service line and possible lead
The municipal map brings together known screenings and interventions. For some unscreened buildings, the City uses the year of construction and number of dwellings to indicate a possibility that should be checked.
View the water service line mapFrozen pipes: private or public?
If another faucet still provides water, the private portion is probably involved. If no faucet in the building provides water, the City asks that the situation be reported so it can assess the exterior portion.
View the official procedurePermits and authorizations by borough
A service-connection change, excavation, exterior water shutoff or certain work on public property may require a municipal procedure. Confirm the process with the borough concerned.
Choose the boroughLocal coverage
Plumbing service in Montreal boroughs
Choose the page that matches the work address. Each local page brings together common needs, relevant services and useful details for submitting a request in that area.
North and northwest
Central and west-central
East and northeast
The borough helps confirm coverage; it does not replace a diagnosis. Even in a served borough, availability depends on the address, priority, type of work and equipment required. For an active emergency, call 450-241-0488.
An identifiable company
Verifiable credentials before work begins
A local page does not replace the information that should appear on the estimate and invoice. Before authorizing the work, confirm the company’s identity, the scope of work, applicable terms and required municipal procedures.
RBQ licence 5688-9025-01Number displayed for verification.
CMMTQ memberThe company performing the work is registered with the Corporation.
9286-5419 Québec inc.Work contracted and performed by the company shown.
450-241-0488Direct line for plumbing requests.
Describe the situation
Address, borough, building type, floor, affected fixtures, active water and access to shutoff valves.
Establish priority
An uncontrolled leak and an active sewer backup do not follow the same process as a fixture replacement or renovation.
Confirm the conditions
Coverage, availability, the arrival window and service-call conditions are confirmed according to the actual request.
Diagnose before expanding the scope
The plumber checks the cause and access, then explains the repair or project steps before anything is added to the accepted scope.
Verified Google reviews
Trust is earned in the field.
Read Google reviews left after real service calls. The rating and review count update automatically.
Frequently asked questions
Before calling a plumber in Montreal
Direct answers about emergencies, coverage, 311, Montreal buildings, pricing and procedures.
Is 24/7 emergency plumbing available in Montreal?
Yes. Emergency requests are received 24 hours a day, 7 days a week. Coverage and the arrival window must still be confirmed according to the address, situation, access and resources required.
Which areas of Montreal do you serve?
The coverage shown on this page includes Ahuntsic-Cartierville, Côte-des-Neiges–Notre-Dame-de-Grâce, Villeray–Saint-Michel–Parc-Extension, Rosemont–La Petite-Patrie, Mercier–Hochelaga-Maisonneuve, Rivière-des-Prairies–Pointe-aux-Trembles, Saint-Laurent, Montréal-Nord, Le Plateau-Mont-Royal and Saint-Léonard. Availability is confirmed using the exact address.
Who should I contact when the municipal system may be involved?
Call a contractor for private fixtures, pipes and systems. Call 311 when the public portion may be involved, when a municipal exterior valve must be operated or when a City procedure is required. If in doubt, review the responsibilities published by the City of Montreal.
Do you service condos, plexes and rental buildings?
Yes, depending on the nature of the work and availability. Specify the unit, floor, affected dwellings and whether a shared pipe or water shutoff is involved. In a condominium, authorization or coordination with the syndicate may be required.
Is a camera inspection always necessary for a clogged drain?
No. A localized blockage can sometimes be handled without a camera. An inspection is most relevant when the problem returns, several fixtures are affected or the condition of an accessible pipe must be documented. The right tool is chosen after the symptoms and access are understood.
How much does a plumber cost in Montreal?
There is no single price for every service call. Cost depends on factors such as when you call, travel, access, time required, parts and specialized equipment. Ask what applies to your situation before authorizing the service call and work.
Is a permit required for plumbing work?
Some work on water or sewer service connections, certain excavations and work affecting public property may require a permit or authorization. The City asks you to choose the borough concerned on its page for water and sewer service-connection permits.
What information should I prepare before calling?
Prepare the complete address and borough, building type, floor, affected fixtures, what triggers the problem, the presence of active water or wastewater, access to shutoff valves and the main drain, and photos if the situation is stable and safe.
Need a plumber in Montreal?
Tell us what is happening. We’ll prepare the next step.
For an active emergency, call. For a repair or planned project, provide the address, building type and symptoms observed in the form.
Plomberie Laval · Work contracted and performed by 9286-5419 Québec inc. · RBQ 5688-9025-01 · CMMTQ member