Septic System Design & Permits in Southern Ontario
The right system begins with a properly designed one. Slegh Septics designs septic systems around your property and prepares the documentation for the approval process — then installs what we design.
Why design comes first
A septic system has to match the property it serves. The design determines the type of system, its size, where it goes and how it fits around everything else on the lot. Get the design right and the installation is straightforward; get it wrong and you pay for it later.
A proper design is built around the specific characteristics of your property:
- Soil conditions and available area
- Daily design flow for the building
- Elevations and setbacks
- Existing structures, wells, watercourses and property boundaries
- Municipal and Ontario Building Code requirements
The permit process, handled
Most homeowners have never applied for a septic permit and don't need to become experts in it. We take care of the process so you don't have to chase it.
The path generally runs: site evaluation → design → drawings → permit documentation → the municipality or approval authority → installation → required inspections. We prepare what's needed and keep the project moving.
We take care of the septic process — not just the excavation. Requirements vary by property and municipality, so the exact path is confirmed for your site. We don't guarantee approval or specific municipal timelines.
From undeveloped lot to installed system
Whether you're starting with a bare rural lot or working from a failing system, we can take you from a proper design to a completed installation. Because we install what we design, the two stay connected — no gap between the drawing and the crew.
Frequently asked questions
Septic system design in Ontario is carried out by qualified designers working within the requirements of the Ontario Building Code. Slegh Septics is a BCIN-registered septic system designer and installer.
We prepare the required drawings and septic documentation for the appropriate approval process. Application requirements differ between municipalities, so the specifics are confirmed for your property.
That depends on the municipality or approval authority and isn't something we control. We prepare a complete, correct submission to avoid unnecessary delays.
Often, yes. Tight, wet or high-flow sites sometimes call for an advanced or tertiary treatment approach that reduces the bed footprint. We'll tell you what the site can and can't support.
Request a Septic Design
Share the property and project details and we'll get back to you on the right next step.