Septic System Replacement in Muskoka and Simcoe County

Quick Answer A failing septic system needs a permit, a designed replacement and an inspection. Independent local contractors replace systems in Muskoka and Simcoe County.

Independent local contractors, a permit-ready design and a final inspection. No-obligation quotes.

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Replacement

When a septic system has to be replaced

A septic system is replaced when the tank, the leaching bed or the whole system can no longer do its job or no longer matches the building it serves. Sometimes the owner notices first: sewage backs up after a pump-out, the ground over the bed stays wet or smells, or the grass over the bed is greener than the rest. Sometimes the municipality does, through an inspection program or a renovation permit.

Replacement follows the same path as a new installation: a qualified designer, a permit from the building department, a registered installer and inspections. The difference is that the existing system has to be assessed first, and where there is no record of it, some municipalities ask for a verification of its type and size.

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Lake Country Septic Services is a free referral service: your request goes to one independent local septic contractor, who quotes and does the work. We may receive compensation when you are connected with a septic contractor; there is no charge to you.

Inspection programs

Inspection programs that lead to replacements

Most of the municipalities we cover inspect private septic systems on a cycle, and a failed inspection comes with a deadline. Orillia, Severn and Oro-Medonte use 5-year cycles, Ramara and Barrie run reinspection programs near Lake Simcoe, Muskoka Lakes works through five zones, and Huntsville, Bracebridge and Gravenhurst run their own programs. Each town’s page explains its program.

Renovations

Renovations and a change of use

Adding bedrooms, plumbing fixtures or floor area, or changing how a building is used, can mean the existing system is no longer sized for the building. Oro-Medonte and Severn, for example, refer to an addition of more than 15% of the finished floor area. Check your own building department’s rule early in the planning.

Where we connect you

Replacement information by community

Good to know

Not what you need?

Pumping, tank cleaning and clogged drains are a different trade, and this site does not refer them. This page is about installing, replacing or repairing the system itself.

Common Questions

Septic Replacement FAQ

How do I know my septic system needs replacing?

Common signs are sewage backing up into the house after a pump-out, wet or foul-smelling ground over the leaching bed, unusually lush grass over the bed, and a report from a municipal inspection program that lists failures and sets a deadline. A contractor or a qualified inspector can tell you whether the problem is the tank, the bed or the whole system.

Do I need a permit to replace a septic system?

Yes. Replacing a system, or replacing or repairing a bed or tank, is work that needs a permit in the municipalities we cover. Muskoka Lakes, Huntsville and Bracebridge say so on their septic pages, and Severn, Oro-Medonte, Ramara, Orillia and Gravenhurst list replacement or alteration as permit work.

Does adding a bedroom or winterizing my cottage mean a new septic system?

It can trigger a review. Several municipalities ask for an evaluation of the existing system when a project adds bedrooms, plumbing fixtures or floor area, or changes the use of a building, and some set thresholds for that. The existing system may be fine, or it may need an upgrade. Ask your building department before you finalize plans.

Can a failing leaching bed be repaired instead of replaced?

Sometimes. A contractor can tell you whether part of the bed can be repaired or the bed has to be rebuilt, and either one needs a permit. A pump-out on its own does not fix a bed that can no longer absorb the effluent. See our leaching bed repair page.

What happens if my system fails a municipal inspection?

In the municipalities we cover, you receive a report or a deficiency letter that lists the problems and sets a deadline, and a municipality can follow up with an Order to Comply. A failed system has to be repaired or replaced, and the work needs a permit.