Les constructions B.L.H. (1997) inc.
Renovation, construction and general workNew home buildersHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 968-8844In Sept-Îles, 19 companies are listed as active for septic system work in RBQ data dated November 3, 2026. 12 (63%) have held their licence for 10 years or more, the oldest since 1984; none got its licence in the last 90 days.

Renovation, construction and general workNew home buildersHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 968-8844Renovation, construction and general workNew home buildersHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 968-8849Heating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 960-0090Concrete and foundationsSeptic systemsWells and water pumps
Call · 418 962-3533Septic systemsWells and water pumps
Call · 418 962-5254Septic systemsWells and water pumps
Call · 418 962-1234Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumpsAccessibility lifts
Call · 418 960-1840Septic systemsWells and water pumps
Call · 418 968-2323Heating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 968-2642Septic systems
Call · 418 961-5198Septic systemsWells and water pumps
Call · 418 962-2393Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumpsAccessibility lifts
Call · 418 968-2505Septic systems
Call · 418 962-0203Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 861-9877Septic systems
Call · 418 962-5640Septic systems
Call · 418 961-9223Septic systems
Call · 418 961-5050Heating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumpsAccessibility lifts
Call · 418 961-2402Septic systemsWells and water pumps
Call · 418 927-3725Ad · Featured placement · examplePreview only — this is not a contractor listing
Baie-Comeau 15Port-Cartier 3Forestville 3Havre-Saint-Pierre 3Pessamit 3
Looking for a septic system contractor in Sept-Îles? 5 of the 19 companies on the list work in this trade only; the others are also listed in other trades: wells and water pumps (14), concrete and foundations (9) and heating, ventilation and air conditioning (8).
Sept-Îles has the most companies in this trade in the Côte-Nord region: 19 of 63.
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.
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 Sept-Îles: check the licence on the day, ask for written quotes and avoid large deposits. Printable checklist before you sign →