Dénommée Excavation inc.
Concrete and foundationsSeptic systems
Call · 450 278-7205Septic systems in Saint-Blaise-sur-Richelieu
In Saint-Blaise-sur-Richelieu, 4 companies are listed as active for septic system work in RBQ data dated November 4, 2026. 3 (75%) have held their licence for 10 years or more, the oldest since 1984; none got its licence in the last 90 days.
Get quotes for septic system work in Saint-Blaise-sur-RichelieuFree, no obligation: describe your work once, licensed companies answer you.
Get my free quotes →Les Entreprises G.M. St-Blaise inc.
Concrete and foundationsSeptic systemsWells and water pumps
Call · 450 291-3318Transport Jean-Claude Beaudin Inc.
Renovation, construction and general workSeptic systemsWells and water pumps
Call · 450 291-3981Les Excavations Pierre Gagnon Inc.
Septic systemsWells and water pumps
Call · 450 291-3264Ad · Featured placement · examplePreview only — this is not a contractor listing
Your business could appear hereSeptic systems · Saint-Blaise-sur-Richelieu and the cities you serveHomeowners can open your profile and call you directly.
Other cities
Longueuil 33Saint-Hyacinthe 26Saint-Jean-sur-Richelieu 25Salaberry-de-Valleyfield 20Carignan 19Boucherville 17Brossard 16Belœil 12Sorel-Tracy 11Saint-Lazare 11Sainte-Julie 10Châteauguay 9
Other trades in Saint-Blaise-sur-Richelieu
Finding a septic system contractor in Saint-Blaise-sur-Richelieu
Looking for a septic system contractor in Saint-Blaise-sur-Richelieu? All 4 companies on the list are also listed in other trades: wells and water pumps (3), concrete and foundations (2) and renovation, construction and general work (1).
Saint-Blaise-sur-Richelieu ranks 44th of 120 cities in the Montérégie region for this trade, with 1% of the region's 552 companies.
The choice is limited in Saint-Blaise-sur-Richelieu. Companies from nearby cities in the region, such as Longueuil (33), Saint-Hyacinthe (26) and Saint-Jean-sur-Richelieu (25), may also serve your area: ask them.
The RBQ numbers: septic systems in Saint-Blaise-sur-Richelieu
4companies with an active licence
0new licences in 90 daysnone in the last 30 days
3have held their licence for 10 years or more75% · the oldest since 1984
3have a $40,000 licence bondand 1 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 (4), 1.4 Roads and pipelines (3), 2.2 Non-drilled water catchment works (3), 3.1 Concrete structures (2).
Useful guides: Septic tank pumping: how often and what to check
Open data of the Régie du bâtiment du Québec as of November 4, 2026, updated every night.
Required licence, issuing body and subcategories for this trade: Septic systems in Greater Montréal.
Homes in Saint-Blaise-sur-Richelieu (2021 Census)
855households in a private dwelling
62%of dwellings built before 1981including 30% before 1961
89%of households own their home
97%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 Saint-Blaise-sur-Richelieu: check the licence on the day, ask for written quotes and avoid large deposits. Printable checklist before you sign →