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Septic resources

How Do I Find My Septic System on Vancouver Island?

Start with property records and professional help to understand where your septic tank and dispersal area are before planning work.

TTIS homeowner guide · Homeowner guide

This article provides general information only. The appropriate response for a septic system depends on the property, the existing system and the findings of the qualified professionals involved.

Which documents should I look for?

Look for a system drawing, as-built plan, maintenance plan, sewerage-system filing or Letter of Certification. Previous owners and contractors may also have useful records.

A drawing can provide a starting point, but it may not show later changes. Finding the tank alone does not identify the whole dispersal system.

  • System drawings and as-built plans
  • Maintenance instructions and service records
  • Previous inspection reports
  • Repair and alteration records

Where can I ask about septic records?

Island Health publishes information about sewerage-system records and requesting records for a property. Use its official guidance for the current application process, fees and availability.

Historical records may be incomplete. Their availability does not by itself establish the current condition of the system.

What if I cannot find any records?

Ask an appropriately qualified practitioner about locating the system and identifying its components. Explain whether you need the information for maintenance, a purchase, landscaping or a building project.

Do not enter a septic tank or attempt to locate one by opening unknown covers or excavating blindly. Leave physical investigation to an appropriately equipped professional.

What should I do with the information?

Keep the available plans and maintenance records together and share relevant information with anyone planning work on your property. Knowing the system's location helps avoid conflicts with future improvements.

If you need help determining the next step, send TTIS the property location and what you already know about the system.

Official guidance

Check the current official guidance for your project. These references do not replace a property-specific assessment.

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Talk to us about your property

Tell us where the property is and what you are trying to do. We will explain the sensible next step for your situation.