Henri Dagenais et Fils inc.
Septic systemsWells and water pumps
Call · 450 429-7228Septic systems in Beauharnois
RBQ data dated November 3, 2026: 9 companies active in Beauharnois for septic system work. 8 (89%) have held their licence for 10 years or more, the oldest since 1984; none got its licence in the last 90 days. Closest: Saint-Lazare (11), Saint-Eustache (10) and Laval (132).
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Get my free quotes →9174-5984 Québec inc.
Renovation, construction and general workSeptic systemsWells and water pumps
Call · 514 219-0125Monière Excavation inc.
Septic systemsWells and water pumps
Call · 450 429-5756Entreprises JMG Tisseur Inc.
Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systemsWells and water pumps
Call · 450 429-40009125-2866 Québec inc.
Septic systemsWells and water pumps
Call · 450 225-5892Excavation L. Martel inc.
Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systemsWells and water pumps
Call · 450 429-3248Entreprise Jean-Marc Tisseur inc.
Renovation, construction and general workSeptic systemsWells and water pumps
Call · 450 225-1150Construction J.P. Roy inc.
Renovation, construction and general workSeptic systemsWells and water pumps
Call · 450 429-31013095-9571 Québec inc.
Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systems
Call · 450 429-4748Ad · Featured placement · examplePreview only — this is not a contractor listing
Your business could appear hereSeptic systems · Beauharnois and the cities you serveHomeowners can open your profile and call you directly.
Other cities
Montréal 234Saint-Lazare 11Saint-Eustache 10Laval 132Boisbriand 11Brossard 16Mirabel 62Blainville 17Longueuil 33Terrebonne 46Boucherville 17
Other trades in Beauharnois
Finding a septic system contractor in Beauharnois
Looking for a septic system contractor in Beauharnois? All 9 companies on the list are also listed in other trades: wells and water pumps (8), renovation, construction and general work (6) and heating, ventilation and air conditioning (3).
In the Montérégie region, 553 companies work in this trade across 120 cities; Beauharnois has 9 of them (15th).
The choice is limited in Beauharnois. Companies from nearby cities in the region, such as Montréal (234), Saint-Lazare (11) and Saint-Eustache (10), may also serve your area: ask them.
The RBQ numbers: septic systems in Beauharnois
9companies with an active licence
0new licences in 90 daysnone in the last 30 days
8have held their licence for 10 years or more89% · the oldest since 1984
7have a $40,000 licence bondand 2 at $20,000 · may compensate a client under RBQ rules
- All of them have a published phone number: you can call them directly.
- Most common subcategories: 2.4 On-site wastewater (septic) systems (9), 2.2 Non-drilled water catchment works (8), 1.2 Small buildings (6), 1.3 Buildings of all kinds (6).
Useful guides: Septic tank pumping: how often and what to check
Open data of the Régie du bâtiment du Québec as of November 3, 2026, updated every night.
Required licence, issuing body and subcategories for this trade: Septic systems in Greater Montréal.
Homes in Beauharnois (2021 Census)
6,290households in a private dwelling
54%of dwellings built before 1981including 30% before 1961
63%of households own their home
51%of dwellings are single-detached houses
Source: Statistics Canada, 2021 Census, table 98-10-0233-01 (25% sample, rounded counts), Statistics Canada Open Licence.
Before you sign with a septic system contractor in Beauharnois: check the licence on the day, ask for written quotes and avoid large deposits. Printable checklist before you sign →