Shut off the water if it is safe
Close the local shutoff valve or main water supply if you know which one to use and can reach it safely.
Water leak repair
Stop the flow, locate the source and authorize the right repair
A water leak can come from a pressurized pipe, fitting, valve, plumbing fixture, water heater or drain. Visible water shows where it is emerging, not necessarily where the defect is located.
SOS Plombiers receives leak-repair requests throughout Greater Montréal and attempts to direct them to a plumbing contractor based on the address, building type, symptoms and local availability.
Indicate whether the water is still flowing, whether the valve is accessible, whether several units are affected and whether the water is approaching outlets, appliances or the electrical panel.
THE FIRST FEW MINUTES
Four prudent steps before the service call
Stay away from electrical hazards
Do not walk through water to reach the panel. If the water is touching an electrical installation, keep your distance and request appropriate emergency assistance.
Limit the spread
Move vulnerable items and use containers or towels only if you can do so without putting yourself at risk.
Document the situation before moving anything
Take photos and note the time, the fixtures or appliances used and the units affected; this information can assist with the diagnosis and insurance file.
For guidance related to water and electricity, also review the recommendations from Hydro-Québec.
HIDDEN OR INTERMITTENT LEAK
Clues to connect with when the water appears
A ceiling stain does not by itself confirm a punctured pipe. Water can travel along a joist, pipe or joint before becoming visible. When the water appears can help distinguish a continuous supply-line leak from a drainage problem that occurs only when a fixture or appliance is used.
- Sound of running water when everything is off: a pressurized pipe or valve may be involved.
- Water only during a shower or draining: the drain, joint or seal around the fixture must be checked.
- Swollen baseboard, blistering paint or persistent odour: moisture may be concealed behind a finished surface.
- Water meter that continues to move: note the result without dismantling the installation and share it with the professional.
THE RIGHT DIAGNOSIS STARTS WITH THE RIGHT SYSTEM
Where the water appears, when it flows and which service applies
This overview does not replace an on-site inspection. Its main purpose is to help describe the request clearly and avoid treating every sign of water as the same problem.
| Observed symptom | Items to check | Useful direction |
|---|---|---|
| Water under a kitchen sink, bathroom sink or near a toilet | Supply hose, valve, fitting, trap, seal, tank or base | Local repair; also see toilets and faucets. |
| Water around a tank or its connections | Tank, relief valve, drain, supply connections and condensation | Diagnosis of the water heater before choosing repair or replacement. |
| Cracked pipe after a period of cold weather | Frozen section, break, valve and adjacent sections | See the service for thawing and repairing frozen pipes. |
| Moisture near the water service entry or reduced pressure | Main valve, fitting, private service line and property line | Inspection of the main water service line. |
| Dirty water, sewer odour or backup through a fixture | Drainage, blockage, shared line or backup | This is not a water-supply leak; describe the exact point where the water is backing up. |
| Inaccessible water flow associated with a drain | Drain line, blockage or visible defect | A camera inspection may be relevant if the drain is genuinely suspected. |
FROM THE FIRST CALL TO THE FINAL TEST
An effective repair depends on a clearly authorized scope
Assessment
SOS Plombiers collects the address, building type, flow rate, visible location and urgency of the situation.
Confirmation
The assigned company confirms its availability, estimated response time, travel charge and terms before the service call.
Locating the source
The professional checks accessible fixtures, valves, fittings and pipes, then determines whether a targeted opening or test is required.
Authorization
The probable cause, proposed work, price and limits of the scope must be communicated before non-emergency work begins.
Testing and documentation
After the authorized repair, ask which tests were performed and which documents, photos, parts or warranty information should be retained.
PLUMBING SCOPE
Correct the source and return the system to service
- isolate the affected pipe or fixture;
- replace a defective fitting, valve or section;
- test the repair and check that no visible leak remains;
- identify access limitations or additional checks that are required.
AFTER THE PLUMBING WORK
Drying, decontamination and reconstruction are separate scopes of work
Repairing the pipe does not automatically dry the drywall, insulation, flooring or cabinets. Depending on the damage, a specialized company may need to measure moisture, remove materials, dry the area or rebuild.
Your insurer decides what is covered. Before authorizing non-emergency work, ask which documents and approvals are required.
PRICING TO CONFIRM BEFORE THE WORK
Why two leaks visible in the same place can cost very different amounts
The price does not depend only on the time required to replace a part. Access, locating the source, the time of the call, materials, testing and related work all affect the scope.
To compare market pricing, some companies publish a plumbing service price guide or their own pricing terms. These pages are external references: only the assigned company and the estimate applicable to your address confirm the actual amount.
AccessVisible pipe, ceiling, finished wall, slab or confined space.
Emergency timingEvening, overnight, weekend or a temporary measure before the complete repair.
DiagnosisObvious cause, intermittent leak, pressure test or exploratory opening.
MaterialsPipe type, valve, fitting, special part and compatibility with the existing system.
RestorationOpening surfaces, protecting the property, drying and reconstruction are not always included.
BuildingShared shutoff, access to another unit, condominium requirements or coordination with a property manager.
BUILDINGS IN GREATER MONTRÉAL
A leak in a plex, condominium or detached house is not handled the same way
In a multi-unit building, the source may be in a different unit from where the water appears. When possible, identify the property manager, shared shutoff valve, affected occupants and access rules before the appointment.
Montréal and the West Island
Plexes, condominiums, commercial spaces and houses where access may depend on several occupants.
Laval and the North Shore
Houses, rental properties and pipes exposed to freezing in unheated areas or exterior walls.
Longueuil and the South Shore
Residential, multi-unit and commercial properties where response time depends on the address and the availability of a plumbing contractor.
INSURANCE FILE AND FOLLOW-UP
Request verifiable facts, not a promise of coverage
The insurer—not the plumber or SOS Plombiers—decides whether damage is covered. The professional can, however, describe the observed source, authorized repair and parts replaced.
Before accepting the work, ask for the assigned company’s legal name and verify its status in the CMMTQ member directory.
Before: photos, time of discovery, fixtures or appliances used and affected areas.
During: observed cause, access opened, temporary measure and authorized work.
After: detailed invoice, replaced parts, tests performed and recommendations.
To confirm: drying, reconstruction, deductible, exclusions and insurer authorizations.
FREQUENTLY ASKED QUESTIONS
Water leak repair: answers before authorizing the work
What should I do immediately if there is a major water leak?
Close the local valve or main water supply only if you can reach it safely. If the water is approaching an electrical installation, do not walk through the water to reach the panel. Keep people away, protect accessible belongings, document the situation and provide the address and flow rate when you call.
How can I tell whether the leak is coming from a water-supply line or a drain?
A water-supply leak may continue even when the fixture is not being used, while a drainage problem often appears during a shower, when water drains or when a fixture or appliance is used. These are clues, not a definitive diagnosis; the professional must confirm the source on site.
Can a leak always be located without opening the wall or ceiling?
No. Accessible fixtures, moisture, valves and certain tests may narrow the area that needs to be opened, but no method guarantees an exact location without access. The company must explain why an opening is proposed and obtain your authorization.
Can a drain camera find every hidden leak?
No. A camera shows the inside of an accessible drain line. It cannot see a potable-water pipe behind a wall and does not prove that the entire system is watertight. It is relevant when the symptoms genuinely point to a drain or sewer line.
Can the repair be completed during the first visit?
Sometimes, if the source is accessible, the part is available and the scope can be authorized immediately. A hidden leak, special part, opening or coordination with a property manager may require an additional step. The assigned company confirms the scope and timing.
Does home insurance cover the damage?
Coverage depends on the policy, cause, maintenance, exclusions and the insurer’s decisions. Keep photos, invoices and technical explanations, and contact the insurer before non-emergency work when the situation allows.
What does receiving requests 24/7 mean?
SOS Plombiers can receive and assess a request at any time. Coverage, availability, arrival time and terms are then confirmed by the assigned company based on the address and situation.
Who confirms the diagnosis, price and warranty?
SOS Plombiers acts as the point of contact for the request. The assigned company inspects the property, confirms its diagnosis, communicates the price and terms, performs the authorized work, issues the invoice and specifies any applicable warranty.
DESCRIBE THE FLOW, LOCATION AND WHEN IT APPEARED
A better description helps direct the request to the right plumbing contractor
Provide the address, building type, where the water is visible, whether it is still flowing, the affected fixtures or appliances and any water shutoff already completed.
The assigned company confirms its availability, estimated response time, charges, diagnosis and work before the authorized service call.
CUSTOMER EXPERIENCES
Reviews associated with SOS Plombiers
The reviews displayed below are aggregated by Trustindex from profiles associated with SOS Plombiers. They describe individual experiences of customers served by local partners and do not guarantee the outcome, response time or price of a future service call.