Vieux-Longueuil · Saint-Hubert · Greenfield Park
Plumber in Longueuil
Longueuil is the largest city on the South Shore and, from a plumbing standpoint, one of the most demanding. More than half of its housing stock predates 1980, which means a great deal of original piping at or past the end of its useful life.
There is also a particularity the City documents itself: part of Longueuil’s sewer network is still combined, meaning stormwater and wastewater eventually meet in the same pipe. That is precisely why certain basements back up during violent storms.
We serve the whole territory, including the Saint-Hubert and Greenfield Park boroughs.
Plomberie Boucherville does not have an office in Longueuil. We travel there from Boucherville.
Worth knowing in Longueuil
A partly combined sewer network
The City of Longueuil explains that despite modernising certain sections, storm and sanitary pipes “eventually meet in a combined network downstream”. When intense rain saturates that network, pressure can travel back toward private connections — and surface through the lowest floor drain in the house.
Source: Ville de Longueuil — Au fil de l’eauRecord rainfall of 13 September 2022
Nearly 70 mm of rain fell on Longueuil in under an hour. In several sectors the municipal network was overwhelmed and water entered homes, businesses and schools.
Source: La PresseHeavy-rain resilience strategy 2025-2027
Longueuil has adopted an official heavy-rain resilience strategy, one pillar of which covers prevention on private property — which includes protection against sewer backups.
Source: Ville de Longueuil56% of housing built before 1980
According to CMM territorial portraits, 6% of Longueuil dwellings predate 1950, 23% are from 1950-1969 and 27% from the 1970s. That range corresponds to copper and cast-iron systems reaching the end of their useful life.
Source: CMM — Portraits territoriaux (MAMH, rôles fonciers 2021)
Most requested services in Longueuil
Water damage
Flooding, backup or a flooded basement: we address the plumbing cause.
Learn moreDrain unclogging
Sink, basin, toilet or main drain backing up: we restore the flow.
Learn more24/7 emergency plumbing
Major leak, sewer backup or burst pipe: reach a plumber at any hour.
Learn moreFrequently asked questions in Longueuil
Why does my basement back up during storms in Longueuil?
Does this only affect older homes?
Do you serve Saint-Hubert and Greenfield Park?
Is the City doing anything about backups?
Need a plumber in Longueuil?
Call us for an emergency, or request a quote for planned work.
Nearby municipalities
28 municipalities served in total. View service areas