Appalaches Excavation inc.
Septic systemsWells and water pumps
Call · 514 660-1094Septic systems in Dunham
RBQ data dated November 3, 2026: 3 companies active in Dunham for septic system work. 1 (33%) has held their licence for 10 years or more, the oldest since 1993; none got its licence in the last 90 days.
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Get my free quotes →Excavation Denis Santerre inc.
Septic systems
Call · 450 357-6137Excavation Éloi Beaudoin inc.
Septic systemsWells and water pumps
Call · 450 263-0770Ad · Featured placement · examplePreview only — this is not a contractor listing
Your business could appear hereSeptic systems · Dunham 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 16Sorel-Tracy 12Belœil 12Saint-Lazare 11Sainte-Julie 10Châteauguay 9
Other trades in Dunham
Finding a septic system contractor in Dunham
Looking for a septic system contractor in Dunham? 1 of the 3 companies on the list work in this trade only; the others are also listed in other trades: wells and water pumps (2).
In the Montérégie region, 553 companies work in this trade across 120 cities; Dunham has 3 of them (63rd).
The choice is limited in Dunham. 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 Dunham
3companies with an active licence
0new licences in 90 daysnone in the last 30 days
1have held their licence for 10 years or more33% · the oldest since 1993
0have a $40,000 licence bondand 3 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 (3), 2.2 Non-drilled water catchment works (2), 6.1 Wood framing (1).
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 Dunham (2021 Census)
1,515households in a private dwelling
59%of dwellings built before 1981including 26% before 1961
83%of households own their home
89%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 Dunham: check the licence on the day, ask for written quotes and avoid large deposits. Printable checklist before you sign →