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Licensed plumbing contractor · RBQ 5688-9025-01

Emergency service available 24/7

Plomberie Anjou

Plomberie Anjou · South Shore

Plumber in Longueuil: emergencies and repairs

Need a plumber in Longueuil for a leak, a clogged drain or a leaking water heater? Plomberie Anjou handles residential plumbing and planned projects. If you need an emergency plumber in Longueuil, start by describing where water is escaping or which fixture is backing up so we can prepare for the work.

Plumber in Longueuil preparing a drain-cleaning machine beside a laundry sink.
RBQ 5688-9025-01
CMMTQ member
Leaks · drains · residential plumbing
When water cannot wait

A plumber in Longueuil for your plumbing emergency

An active leak and a slow kitchen sink require different first steps. When you call, explain whether water is still flowing, whether several fixtures are affected and whether you have closed a shutoff valve. The floor where the problem occurs and access to the piping also help us prepare for the visit.

Limit use of the affected plumbing and keep the area accessible without putting yourself at risk. Do not disconnect a pressurized pipe or force a seized valve. If you rent, notify the property owner as well. In a condo, report any issue that could involve shared plumbing to the condo association.

Water is leaking from a pipe or fitting

Close the fixture’s shutoff valve or the main water valve only if it is safe to do so. Explain where the leak is and which fixtures still have water. Water leak repair starts with locating the faulty component.

A toilet or drain is backing up

Stop using the affected fixtures. If water is rising through several drains, avoid discharging more water elsewhere in the unit too. Note whether the backup started after rain, a washing-machine cycle or use of another bathroom.

The hot water tank is leaking

Tell us whether the water appears to come from a connection, a valve or the tank itself. A photo taken from a safe distance can help prepare the assessment, but it cannot confirm the cause or establish that replacement is necessary.

If water reaches electrical equipment or the route to the electrical panel is wet, stay away and do not try to operate the panel. Follow Hydro-Québec’s electrical safety guidance for flooding. Call 911 if anyone is in immediate danger.

Basements and drainage

Water is backing up: where does the problem start?

The fixture that overflows is not always where the blockage begins.

One fixture or several rooms?

A slow bathroom sink may need work on its own drain. When the toilet, shower and floor drain react together, the shared drainage route needs assessment. Note which fixtures are affected, their floor and when water rises. These observations guide the diagnosis without proving where a blockage sits.

For drain cleaning, the available access and pipe diameter help determine which equipment is suitable. Keep the cleanout accessible. If you have already used a chemical drain cleaner, tell the plumber before any pipe is opened or work begins.

In Longueuil, check the municipal procedure too

The City recommends checking whether neighbours have the same sewer backup. A shared problem may involve the public sewer and should be reported to 311. Even if only your building appears affected, the City’s procedure calls for opening a file before inspecting the sewer connection. Read Longueuil’s sewer backup procedure (in French).

If the City requires a video, mention that when requesting the visit. Confirm the required image quality, displayed information and report before booking. A camera inspection can document an accessible pipe, but cleaning may be needed first if standing water or a blockage prevents a useful view.

Our sewer backup service explains the assessment process. A recurring blockage does not automatically mean excavation is necessary. The cause and the affected section need to be identified before deciding on the next step.

Restore everyday comfort

Plumbing services suited to the problem you see

A useful repair takes account of the symptoms, the condition of the components and the access actually available. Bring us the following needs, whether you want a fixture working again or are preparing changes to your home.

01 · Water supply

Leaks, shutoff valves and fittings

A damp fitting, a valve that no longer closes or a leaking pipe calls for a focused inspection. We assess the accessible area and whether the supply can be isolated before determining the repair. Behind a finished wall, the opening required depends on where the fault is located. A photo alone cannot establish how much access will be needed.

For low water pressure, explain whether it affects hot water, cold water, one faucet or the whole building. A change at a single fixture requires different checks from a sudden pressure drop in several units at once.

Explore water leak repairs

02 · Hot water

Assessing an electric water heater

A shortage of hot water does not automatically mean the tank needs replacing. We gather the symptoms and check the plumbing components to establish the appropriate next step. A leaking tank, a seeping connection and an electrical supply issue are different problems and may require different professionals.

To prepare for a replacement, provide the capacity shown on the label, the available space and the route out of the building. In a narrow closet or finished basement, tank removal and valve access need planning. Any required electrical work must be handled by an appropriately qualified professional.

View our electric water heater service

03 · Kitchens and bathrooms

Toilets, faucets and plumbing fixtures

A toilet that keeps running, a faucet that is hard to shut off or a leaking drain can disrupt a room without calling for a complete renovation. Repair options depend on the model, the condition of its parts and whether replacements are available. Have a photo of the fixture and its model number ready if you can.

Before installing a new fixture, the existing connections, shutoff valves and available space need checking. Buying it first can complicate the project if the water connections or drain position do not match. Share the manufacturer’s specifications before committing to a particular model.

Plan a fixture repair or installation

04 · Planned projects

Plan the plumbing before finishing the room

Moving a shower, adding a sink or rearranging a kitchen requires checking pipe routes and drainage conditions. Show us your proposed layout before walls are closed. Keeping a fixture in place and moving it to the other side of the room involve different work.

Planning helps distinguish the plumbing changes, the openings needed and the finishing work to coordinate. In an occupied building, account for access to other units and the notices needed for any interruption to a shared water supply. Confirm who will arrange those notices and provide access on the day of the work.

Discuss plumbing for your renovation

The right checks in the right place

Under a finished floor, behind a wall or on a shared line

In a house or apartment in Vieux-Longueuil, the building’s apparent age does not tell you everything about its plumbing. Pipes may have been replaced at different times. Available plans, past invoices and existing access points are more useful than assumptions about hidden materials.

A finished basement can conceal a shutoff valve, a backwater valve or a cleanout. Locate known access panels and clear the area before the visit, without opening a cover during a backup. In a condo or apartment building, identify who can authorize a water shutoff or unlock a mechanical room.

For everyday repairs, explore our residential plumbing services. The scope of the work will depend on what can actually be inspected. Let us know about previous repairs or recurring symptoms, even if the last visit involved a different fixture.

A backwater valve needs accessible inspection

A backwater valve does not protect against every source of flooding. The City distinguishes sewer backups, runoff and groundwater. Its home flood protection resource (in French) recommends checking these valves regularly and maintaining them at least annually.

If your device is unfamiliar, hard to reach or appears faulty, request an assessment of your backwater valve. The installation type and connected fixtures need checking before a modification can be proposed. Keep its access panel clear rather than covering it permanently during basement finishing work.

An older water service line deserves a check

If you received a testing notice or do not know the material of your service line, consult Longueuil’s information on lead in drinking water (in French). The City distinguishes public and private portions of the connection. Replacing the private portion requires appropriate coordination with the municipality.

For a water service line request, share any notices and records you have. The construction date alone does not confirm that the line contains lead.

Prepare for a useful visit

From your first call to a clear scope of work

A good description helps us prepare, while diagnosis still depends on the installation on site. Give your Longueuil address, the affected floor, the symptoms and the steps you have already taken. Photos are helpful when you can take them safely. Mention parking or building-access instructions that could affect arrival.

  1. Describe the symptoms and access

    Explain when the issue began, whether it comes and goes and what triggers it. Mention a cleanout, an access panel, a locked room or a shared valve. For a drain, describe any attempts already made to clear the blockage, including products used.

  2. Inspect the accessible installation

    The plumber checks the relevant components and determines what further assessment is needed. A visible defect may need distinguishing from an issue farther along the pipe. Additional access, a camera inspection or drain cleaning may need to be discussed before the cause can be confirmed.

  3. Clarify the repair and follow-up

    Understand the proposed repair, parts and any related work before it begins. Afterwards, ask which checks were completed and what still needs monitoring or coordination with the owner, condo association or City. Keep any report relevant to a recurring problem or municipal file.

Customer reviews

Experiences with Plomberie Anjou

Read experiences shared by customers who have called on Plomberie Anjou. For your own request, explain the problem and access constraints so we can discuss a suitable service visit.

Before requesting service

Your Longueuil plumbing questions

Answers to help you choose the next step, prepare access and know which details to share when you call.

Should I call the City or a plumber for a sewer backup?

Both may be needed. Report the backup to 311 following the municipal procedure and ask about opening a file. Mention whether neighbours are affected too. Private piping may need a plumbing assessment. If the City requests a video or report, share those requirements before booking the inspection.

Does every clogged drain need a camera inspection?

No. The choice depends on the symptoms, access and purpose of the visit. An inspection can be especially useful for understanding a recurring blockage or documenting a pipe. If the line is full of water or obstructed, it may need cleaning before the camera can provide useful images.

Can you work in a condo or an occupied apartment building?

Describe the situation and identify the access points and person responsible for shared systems. A repair inside your unit may need coordination if it involves a shared valve or pipe. Notify the condo association or property owner before any change that could affect other occupants.

Does a ceiling leak always come from the unit above?

No. The place where water appears does not confirm its source; water can travel before becoming visible. Note when the mark changes and which fixtures are in use, then request an assessment. If the ceiling sags or water reaches electrical equipment, stay clear of the area and report the danger.

What should I prepare for a water heater replacement?

Photograph the label and accessible connections. Describe the tank’s location, the width of the removal route and any stairs or storage that restrict access. The appliance choice and connections need checking. A lack of hot water alone does not establish that replacement is necessary.

What if the backwater valve is hidden under the floor?

Find the known access panel and move only the items blocking it. If you cannot identify an access point, mention this when requesting service. Do not cut the flooring or dismantle a device during a backup. Its location and access conditions need assessing before work is planned.

Longueuil and neighbouring South Shore areas

Our Longueuil service is part of Plomberie Anjou’s South Shore coverage. For an address in the boroughs of Saint-Hubert or Greenfield Park, or in the neighbouring cities of Saint-Lambert and Boucherville, see the relevant area page. Provide the exact work address when contacting us so the location and access can be confirmed.