BC Septic System Regulations: What Homeowners Need to Know

BC Septic System Regulations

If you live in a rural area or are building on an unserviced lot, understanding BC septic system regulations is essential when planning a septic system design and installation. All onsite sewage systems in British Columbia are governed by the Sewerage System Regulation (SSR) under the Public Health Act, and failure to follow these rules can lead to fines or system failure.

Who Can Install or Design a Septic System in BC?

In BC, only an Authorized Person is permitted to design, install, or alter a septic system. Working with an experienced septic system installer can also simplify the process by keeping the design, documentation, excavation and installation connected. This includes:

  • A Registered Onsite Wastewater Practitioner (ROWP)
  • A Professional Engineer with relevant experience

Homeowners are not allowed to design or install their own system unless they are licensed. All new systems must follow strict design standards and be filed with the local health authority before installation begins.

Key Requirements Under the Sewerage System Regulation

Here are the main BC septic system regulations you need to be aware of:

  1. Site Assessment: A qualified professional must evaluate your property’s soil, slope, drainage and available dispersal area as part of the septic system design process.
  2. System Design & Filing: Before construction, your designer must file a Record of Sewerage System (RSS) with your local health authority.
  3. Installation: The septic system installation must follow the approved design, including the placement of the tank, piping, distribution components and dispersal area.
  4. Final Filing: Once installed, an “as-built” drawing and final filing are submitted to confirm the system meets all standards.
  5. Maintenance Plan: Type 2 or Type 3 systems require a maintenance contract with a qualified provider.
Can I Modify or Expand My System?

Any changes to an existing septic system; such as adding bedrooms, increasing occupancy, or replacing parts: must be assessed by an Authorized Person and may require a new filing. If an existing system can no longer accommodate the needs of the property, a septic system replacement or upgrade may be required.

Why These Regulations Matter

BC’s septic system regulations are in place to protect public health and the environment. Improperly installed or maintained systems can contaminate groundwater, pollute nearby water sources, and cause costly damage to your property.

In summary:


BC septic system regulations require that all residential systems be designed, installed, and filed by a licensed professional. Following these rules ensures your system is legal, safe, and functioning properly.

Learn more about Kerkhoff Excavating
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Planning a Septic System in BC?

Kerkhoff Excavating + Septic provides Certified ROWP septic system design, site assessment, excavation and installation throughout the Fraser Valley and surrounding areas. From the initial property assessment and required documentation through excavation and final installation, we can manage the septic process from start to finish.