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In Coteau-du-Lac, 2 companies are listed as active for septic system work in RBQ data dated November 3, 2026. 1 (50%) has held their licence for 10 years or more, the oldest since 1984; none got its licence in the last 90 days.
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Other cities
Longueuil 33Saint-Hyacinthe 26Saint-Jean-sur-Richelieu 25Salaberry-de-Valleyfield 20Carignan 19Boucherville 17Brossard 16Sorel-Tracy 12Belœil 12Saint-Lazare 11Sainte-Julie 10Châteauguay 9
Other trades in Coteau-du-Lac
Finding a septic system contractor in Coteau-du-Lac
For septic system work in Coteau-du-Lac (region: Montérégie), 2 companies hold an active RBQ licence as of November 3, 2026. Compare them above: licence number, years licensed and phone.
Coteau-du-Lac ranks 71st of 120 cities in the Montérégie region for this trade, with < 1% of the region's 553 companies.
The choice is limited in Coteau-du-Lac. 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 Coteau-du-Lac
2companies with an active licence
0new licences in 90 daysnone in the last 30 days
1have held their licence for 10 years or more50% · the oldest since 1984
2have a $40,000 licence bondmay compensate a client under RBQ rules
- All of them have a published phone number: you can call them directly.
- Most common subcategories: 1.3 Buildings of all kinds (2), 1.4 Roads and pipelines (2), 1.5 Civil engineering structures (2), 2.2 Non-drilled water catchment works (2).
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 Coteau-du-Lac (2021 Census)
2,930households in a private dwelling
32%of dwellings built before 1981including 10% before 1961
76%of households own their home
72%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 Coteau-du-Lac: check the licence on the day, ask for written quotes and avoid large deposits. Printable checklist before you sign →