Mandatory Septic Re-Inspection Program

For certain properties, a mandatory septic system re-inspection is required every five years under the Ontario Building Code. Mandatory inspections apply when your property is located:

  • Within 100 metres of the Lake Simcoe shoreline
  • Within 100 metres of another body of water within the Lake Simcoe watershed
  • Near a municipal well or surface water intake area

See our Septic Re-inspection Brochure for more information. 


A malfunctioning septic system can release waste and bacteria into the ground and can contaminate groundwater or surface water. A failed septic system may also decrease your property value and cause expensive repairs.

What to expect

You will receive a letter by mail when it is time for your system to be inspected. A Town inspector will conduct a visual surface inspection of your septic system. The inspector will not dig up or disturb the ground during the inspection.

You do not need to be present for the inspection unless your assistance is needed. If you’d like to be present, please book a septic inspection online for a specific date during business hours. Note: an inspection may only be booked if you have received a letter from the Town stating that your property is due for re-inspection during the current year.

Inspection process 

  • Step 1: Identify systems to be re-inspected 
  • Step 2: Determine if the system has a permit or any health unit septic records on file
  • Step 3: Review and assess any septic information. If no file is found, the homeowner will be contacted to collect information using this Property Owner Information Form
  • Step 4: Conduct re-inspection for compliance
  • Step 5: Enter system and inspection results into our database


The cost of a regular 5-year inspection is $129.90. A prorated rate (reduced fee) may apply depending on how recent the last inspection was (e.g. properties that are due for inspection but are still within the 5-year re-inspection cycle).

The Lake Simcoe Region Conservation Authority and Nottawasaga Valley Conservation Authority may have funding available to help cover the cost. 

Failed inspections

If your septic system is functioning properly but an inspector has noted minor deficiencies, your system may not pass inspection. Remedies for these minor deficiencies may be simple, such as replacing a broken tank lid or removing excessive vegetation from the dispersal bed area.

If there are signs that your system is failing, we may require a third party to conduct a more extensive inspection at your cost. Depending on the results of the third party inspection your septic system may need to be repaired or replaced.

If a problem is found with your septic system you will need to remedy the deficiencies by obtaining the necessary permits and approvals.