Best Septic Tank Installers near Trois-Rivières, QC
2 of these companies are based in Trois-Rivières; the others serve Trois-Rivières from towns including Shawinigan (29 km), Saint-Paulin (38 km) and Saint-Adelphe (44 km).
3 open weekends · 9 rated 4.5+ · 2 show a licence
Data verified October 18, 2026
D. de Montigny et Fils Inc
“Good person who works well, this company is worth it more than elsewhere the boss works very hard and acts like a pro”
Vivier Excavation Inc.
“The gentleman was super nice thank you”
Service Vacuum St-Paulin
“Excellent service, takes the time to give advice, kind, smiling, he even encourages the next generation of the company.”
Excavation RMG
“Demolition of my house very well done with punctuality and perfect execution by the employees.”
AGS Environnement Inc
“Samuel came to do the soil expert report and the plans for our septic tanks and the well.”
The 10 companies listed for Trois-Rivières, QC design and install septic systems and replace failed leaching beds. Each company's own site is the source for its hours, licence claims and estimate policy. Ask who applies for the permit and who arranges the inspection before backfill.
Area overview: Trois-Rivières, QC
The 10 companies on this page are rated from 3.8 to 5.0 across 137 reviews; 9 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (95%), responsiveness (50%) and quality (40%). 3 are open on Saturdays. 2 show a licence on their websites. 5 have ten or more years of experience, the longest 26 years. We have a website on file for 9 of the companies on this page; 8 publish a contact page and 5 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Why are installers from outside Trois-Rivières listed here?
2 of the 10 listings show an address in Trois-Rivières and the rest sit within 60 km. This is rural and cottage work, and equipped crews cover large territories. What matters more than distance is whether they regularly deal with the municipality or health unit that will approve and inspect your system.
Fosse Expert
“I received valuable recommendations that allowed me to approach my problem gradually and stick to the necessary interventions.”
Les Entreprises Delorme
“They bring great ideas, offer a large selection of quality products at low prices and offer breathtaking results.”
Marcel Guimond & Fils Inc
“Marcel Guimond gives us peace of mind, we know that we won't spend hours clearing snow from the parking lot.”
Casaubon & Frères Inc
“Septic installation installer with exemplary quality of work.”
Why these companies made our list
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