Plomberie Laval · Residential service
Plumber in Sainte-Thérèse24/7 emergency service, drain clearing and repairs
An active leak, a backed-up drain or a water heater that no longer performs? Have the problem assessed by a plumber serving Sainte-Thérèse.
We handle urgent calls and planned work involving piping, plumbing fixtures, drainage, basement protection and renovations. Availability and service call conditions are confirmed over the phone.
Emergency plumber in Sainte-Thérèse
An active leak or sewage backing up calls for a prompt response.
Close the main water valve if you can reach it safely. During a sewer backup, stop using fixtures and appliances that discharge water. Stay out of a flooded basement where there may be an electrical hazard.
450-241-0488The appropriate level of service
What the symptoms already tell us
Before the visit, note when the problem appears and how many fixtures are affected. These details help us prepare without replacing an on-site diagnosis.
One fixture
A slow sink, clogged toilet or low pressure at one faucet may originate in that fixture, its mechanism, aerator or drain branch.
Several fixtures together
Gurgling and water rising in several fixtures can direct the investigation toward a shared line farther along the drainage system.
Water without fixture use
A valve, pipe or tank that leaks continuously should be isolated and checked before the surrounding materials deteriorate.
A problem following rain
Distinguish water in the sump pit, foundation seepage and sewage rising through a fixture. The equipment and next steps differ.
Urgent and planned plumbing work
Plumbing services for houses, condos and multiplexes
The service is defined by the accessible installation and the result required. A focused repair may be enough, while a recurring problem can justify a deeper investigation.
Clogged drains and sewer problems
For a slow sink, blocked toilet or water rising through a floor drain, identify which fixtures are affected and what happens when you run water.
Drain clearing and cleaning aim to restore normal flow. When a blockage returns, a drain camera inspection may help locate buildup, roots, a displaced joint or a damaged section when access and visibility allow.
An inspection does not always replace cleaning. A pipe filled with wastewater may need to be cleared before the camera can provide useful observations.
Water leak repair
A damp fitting, seeping valve, damaged pipe or ceiling stain requires locating the source. Leak detection and repair begin with how the leak behaves and the available access.
Water heaters
For a leaking tank or a general shortage of hot water, have a photo of the label ready. Water heater service considers capacity, age, access and existing connections.
Plumbing fixtures
Toilets, faucets, showers and sinks: we check the water supply, drainage and available space before replacement or installation.
Sump pumps and backwater valves
A sump pump and a backwater valve serve different purposes. Their presence, access and connections must be examined separately.
A compact city with varied buildings
From Le Village to the station area, access changes the job
Sainte-Thérèse combines an older downtown building stock with newer redevelopment around the commuter station. The neighbourhood helps prepare the visit, while a building’s apparent age does not establish the condition of its plumbing.
Le Village and altered buildings
In a house or multiplex renovated at different times, several pipe materials and routes may coexist. Mention known work, the presence of a cellar or crawl space, and any access points that are no longer visible.
Condos and multi-unit buildings near the station
Provide the unit number and floor, and mention whether neighbours have the same problem. A shared water shutoff or mechanical-room access may require authorization from building management.
Residential streets and finished basements
A cleanout, backwater valve or sump pit must remain accessible. Locate panels, clear the route and explain whether finishes cover the probable path of the pipe.
Boulevard du Curé-Labelle and highways 15 and 640: these routes help locate the address. They cannot support a promised arrival time until the precise location and availability have been confirmed.
Official Sainte-Thérèse profile (French) ↗No water during a cold spell
A simple test helps distinguish private piping
When one faucet has no flow, check whether other fixtures in the building still work. This observation helps identify the right first call.
Do some faucets work, or do none of them work?
The City states that when water flows elsewhere in the building, the private plumbing is probably involved and a plumbing company should be called. If no faucet works, the problem may affect piping outside the building and Public Works should be contacted.
Before winter, keep the main water service accessible, drain outdoor faucets and protect pipes exposed to cold. A bulging or cracked pipe can leak when it thaws. Never use an open flame to heat it.
City guidance on water and frozen pipes (French) ↗Sewer backups and heavy rain
Assess the building before choosing corrective work
A backwater valve, pump or foundation drain should not be proposed solely because water appeared in the basement. The entry point, history and drainage configuration must be considered together.
Document the event
Note the time, rainfall, fixtures in use and the first place affected. Photograph damage before cleanup when it is safe to do so.
Identify vulnerabilities
Check fixtures below street level, access to the backwater valve, the sump pit, pump and visible discharge piping.
Define the work
Corrective work may involve a valve, pit, pump, backup power or a connection. Its relevance depends on the findings.
Municipal program
Inspections and financial assistance for some protective work
The City publishes an inspection and support program for certain buildings affected by flooding or sewer backups. Its page also describes assistance covering 70% of eligible costs, up to $7,000 per eligible dwelling, for work recommended through the program.
Application periods, available places, eligibility and prior approval affect the process. The 2026 deadline shown by the City has passed, so confirm directly whether a new application period is open before relying on this assistance or starting work.
Check the program and current conditions (French) ↗Bathroom · Kitchen · Basement
Plan the connections before closing the walls
Moving a shower, adding a powder room or redesigning a kitchen requires checking water supply, drainage, plumbing vents and clearances. A fixture choice can alter the access required or the drain position.
For residential plumbing and renovation work, prepare a layout, fixture dimensions and photos of the existing installation. Confirm the configuration before ordering concealed faucets.
Also ask the urban planning department whether the project requires a permit or another authorization. The plumbing scope and building work should be defined together when partitions or structural elements are altered.
Permits and urban planning in Sainte-Thérèse (French) ↗Clear scope
From the first call to final testing
The diagnosis begins with observable facts and accessible components. Additional work is discussed if another condition is uncovered.
Work performed by 9286-5419 Québec inc.
RBQ licence 5688-9025-01
CMMTQ member
Qualify the request
Address, urgency, affected fixtures, how the problem has changed and access constraints.
Examine the installation
Appropriate tests, visible components and known history help define the problem.
Explain and authorize
The proposed repair, its limits and any additional step are presented before work begins.
Return the system to service
Watertightness, drainage or equipment operation is checked according to the work completed.
Sainte-Thérèse is part of our North Shore service area. For another property, see the page for the relevant city.
Customer reviews
Experiences shared after our service calls
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Frequently asked questions
Before calling your Sainte-Thérèse plumber
Useful answers about emergency service, costs, drains, frozen pipes, assistance programs and renovations.
Can I call a plumber in Sainte-Thérèse at night?
Yes. Emergency calls are accepted 24 hours a day, 7 days a week at 450-241-0488. Tell us whether water is still leaking, whether sewage is backing up and which fixtures are affected. Availability and the arrival window are confirmed over the phone.
How much does a plumbing service call in Sainte-Thérèse cost?
The price depends on the service call, time of day, labour, parts and equipment used. An accessible blockage and a leak investigation behind a wall do not have the same scope. Confirm the billing conditions before the visit; an on-site assessment may be required to establish the complete work.
What should I do if several drains back up at once?
Stop using fixtures and appliances that discharge water and call a plumber. Several affected points may indicate a problem in a shared or main drain. Cleaning can restore flow; a camera inspection may then be useful if the blockage returns or a defect is suspected.
How can I tell whether a frozen pipe belongs to my home or the City?
The City of Sainte-Thérèse states that when water still flows from some faucets, private plumbing is probably involved. If no faucet in the building provides water, contact Public Works because the problem may be outside. A cracked pipe can leak as it thaws.
Does the City subsidize backwater valves and sump pumps?
Sainte-Thérèse publishes an inspection program and assistance for certain recommended work, subject to eligibility, prior authorization, budget limits and application periods. The displayed 2026 deadline has passed. Confirm with the City whether a new application period is open before planning work based on a subsidy.
Do you work in Sainte-Thérèse condos and multiplexes?
Yes, depending on the problem and available access. Provide the unit, floor, affected fixtures and whether other occupants have the same symptoms. A shared pipe or water shutoff may require coordination with the condominium association or property owner.
Does every clogged drain require a camera inspection?
No. A local, accessible blockage can often be handled without a complete inspection. A camera is especially useful when the problem returns, affects a more distant pipe or suggests a defect. The line must provide enough passage and visibility.
When should I call about a bathroom renovation?
Call before ordering concealed fixtures or closing the walls. The plumber can review water supply, drainage, venting and clearances. Also check with Sainte-Thérèse’s urban planning department to determine whether the project requires a permit or another authorization.
Service in Sainte-Thérèse
A plumbing problem? Let’s clarify what is happening.
Call with the address, affected fixtures and current situation. We will confirm availability and the service call conditions.
Plomberie Laval · 9286-5419 Québec inc. · RBQ 5688-9025-01 · CMMTQ member