Sewer unclogging — Montreal, Laval & the Laurentians
Toilet overflowing, stagnant water, sewer smells? Our technicians respond quickly with professional high-pressure equipment to restore the flow of your pipes — residential as well as commercial.
Signs of a blocked drain
A clogged drain does not always show clear signs right away. Here are the warning signs you shouldn't ignore — the sooner you act, the more limited the damage.
Backing-up toilet
When flushing causes a backup or the water level rises, it is often a sign of a deep blockage in the main pipe.
Slow drainage
Water taking time to drain from a sink, bathtub, or shower indicates an accumulation in the pipes: soap, hair, grease, or limescale.
Backing-up floor drain
De l’eau qui remonte par le drain de plancher du sous-sol est un signe sérieux d’obstruction du collecteur principal ou de l’égout municipal.
Persistent sewer odors
Foul odors escaping from traps or drains often signal decomposing organic buildup or a disrupted water seal.
Gurgling pipes
Gurgling sounds after using fixtures reveal disrupted air circulation, often indicating the start of a blockage.
Multiple fixtures affected
When multiple water outlets back up at the same time, the problem is usually in the main line rather than individual branch pipes.
Common causes of obstruction
- 1
Tree Root Intrusion
Roots seek moisture and infiltrate cracks in the pipes, causing blockages and sometimes breakage. Frequent in residential areas of Montreal, Laval and the Laurentians.
- 2
Grease and Soap Buildup
Fats from food and soap residue solidify on the pipe walls and gradually reduce the usable diameter until a blockage occurs.
- 3
Foreign Objects and Wipes
Wipes (even those labeled "flushable"), cotton swabs, and hygiene products do not dissolve and quickly block pipes.
- 4
Limescale and Mineral Deposits
Hard water deposits minerals on inner walls; over time, they accumulate and restrict flow.
- 5
Pipe Sagging or Damage
Unstable soil, roadwork, or aging pipes can cause sagging, which traps materials.
Our work process
Each intervention follows a structured process to guarantee a lasting result, not a temporary solution.
Call & Evaluation
You describe the issue. We evaluate the urgency and schedule the call as quickly as possible, often the same day.
On-Site Diagnosis
Upon arrival, the technician inspects the system, locates and identifies the blockage, and clearly explains the situation to you.
Hydro-Jetting Unclogging
Un jet d’eau à haute pression élimine l’obstruction et nettoie les parois des conduits en profondeur.
Verification & Report
We verify the flow and provide a report. If needed, we recommend preventive measures.
Throughout Montreal, Laval & the Laurentians
Based in the region, Drain MPR quickly serves the following municipalities for all sewer unclogging needs.
FAQ — Sewer Unclogging
How can I tell if the blockage is in my pipe or in the municipal sewer?
How much does it cost to unclog a sewer in Montreal, Laval or the Laurentians?
What is the difference between ferret (snaking) and hydrojetting?
Can I prevent sewer blockages?
Does my home insurance cover damages related to a sewer backup?
Additional services
Unblocking a drain sometimes reveals a related problem. Here are our services for a complete solution.
A blocked drain? We'll fix it.
Our technicians respond quickly. Get a free quote, or call directly for a faster response.
