City of Vancouver Sewer Separation: What Homeowners Must Do
Drainage · 5 · 2026-03-23
Understand the City of Vancouver's sewer separation program, why it's required, and what homeowners need to do to comply with the bylaw.
Frequently Asked Questions
What is sewer separation?
Sewer separation is the process of creating two separate pipe systems: one for sanitary sewage from your home and another for stormwater runoff from your roof and property. This prevents raw sewage from overflowing into local waterways during heavy rain.
Why is sewer separation mandatory in Vancouver?
It's mandatory to comply with provincial environmental regulations aimed at eliminating combined sewer overflows (CSOs) by 2050. CSOs pollute our rivers and ocean with untreated sewage, harming public health and aquatic life.
How do I know if I need to separate my sewer lines?
You will be notified by the City of Vancouver when your neighbourhood is scheduled for an upgrade. It's also required for major renovations or if you need to replace your existing sewer line.
What is the average cost of private sewer separation?
The cost varies based on property size, pipe condition, and accessibility, but it is a significant investment. It's best to get detailed quotes from several qualified and reputable drainage contractors.
Can I do the sewer separation work myself?
No, this is not a DIY project. The work must be performed by a licensed and insured contractor and pass a mandatory inspection by the City of Vancouver to ensure it meets all bylaw requirements.