If you’re planning to install or replace a septic system in Ottawa or Eastern Ontario, one of the first questions you probably have is:
The honest answer is it depends.
Most new septic system installations in Ottawa range from $25,000 to $60,000+, depending on several factors, including:
At MD Excavation, your local Ottawa excavation company we believe in being transparent with homeowners. Here’s exactly how the process works.
Before anyone can accurately price your project, you need a septic system design prepared by a qualified engineer or septic designer.
The design determines:
The good news?
MD Excavation works closely with trusted local engineers who specialize in septic system designs. We can connect you with the right professionals and help guide the process from the very beginning.
Once the design is complete, MD Excavation can provide a detailed and realistic quotation. Many homeowners ask for pricing before having a design completed, but the reality is: Without a septic design, it’s impossible to provide an accurate quote.
We can certainly provide a general ballpark estimate, but the final cost depends entirely on what the engineer specifies.
Some important factors include: Conventional Septic Systems
A conventional septic system is typically the most economical option when enough land is available.
These systems work well for:
However, larger homes, multiple dwellings, commercial properties, or challenging soil conditions often require larger systems. In some situations, a conventional system requires a raised septic bed, which can increase construction costs.
Advanced treatment units generally cost more than conventional systems. However, because they require a much smaller leaching bed, they can actually become the more economical choice on smaller lots or properties with site restrictions.
Every property is different—which is why the engineered design is so important.
Once your quote is prepared, it remains valid for 30 days.
Once you’re ready to move forward:
From this point forward, you’ll work directly with Don and Mike, the owners of MD Excavation and local Ottawa excavation contractors, who oversee the project from start to finish.
Construction starts with preparing the site.
If you’re replacing an existing system, the old septic tank is safely decommissioned and destroyed in accordance with regulations.
The installation process typically includes:
Every installation is completed according to Ontario Building Code requirements and approved engineering specifications.
Before the system can be fully completed, it must pass inspection.
Once MD Excavation notifies the municipality that the installation is ready, an inspector has up to five business days to perform the inspection.
If the inspector is available sooner, the project can move ahead more quickly.
Once approved, the installation can be completed and finalized.
This is where MD Excavation stands apart.
Many contractors simply install the septic system and leave the property rough and unfinished.
MD Excavation takes pride in restoring your property.
Final restoration includes:
The goal isn’t just a properly functioning septic system—it’s leaving your property clean, safe, and ready to enjoy.
Installing a septic system is a major investment, and choosing the right contractor matters.
When you hire MD Excavation, you work directly with owners Don and Mike throughout the entire project—not a salesperson or project manager who disappears once the contract is signed.
From coordinating septic designs and providing honest pricing to excavation, installation, inspections, and final grading, MD Excavation manages every stage of the process with professionalism and attention to detail.
If you’re planning a new septic installation or replacing an aging system anywhere in Ottawa or Eastern Ontario, contact MD Excavation today for expert guidance and a realistic quote based on your engineered septic design.
