

What's happeningReview proposed requirements
We are proposing updated rainwater management requirements to take effect January 1, 2026, for new developments on sites over 1,000 m² or with a floor space ratio (FSR) over 1.0.
Review the proposed requirements PDF file (505 KB) and provide your comments by Monday, July 7, 2025 to rainwater@vancouver.ca
Review upcoming requirements
As of July 1, 2025, most new buildings will require on-site rainwater management. Review the requirements
In Vancouver, rainwater runs off into our sewer system and can cause:
- Flooding
- Sewer overflows
To help reduce flooding and overflows, we:
- Need to look at ways to manage rainwater
- Are working with Metro Vancouver to improve the public sewer system
Private properties also have a role to play in keeping rainwater out of our sewers.
Background
Contact us
General support
Email: rainwater@vancouver.ca
Sewer connection support
Email: eng.swpermits@vancouver.ca