Sewer Overflows
If you suspect a sewer overflow call 503-635-0280 during work hours Mon-Fri or after hours, LOCOM at 503-635-0238.
City of Lake Oswego Sewer Overflows
Unusually heavy rainfall challenges the sewer system each winter, and there are continuous maintenance efforts underway to address capacity and durability of our infrastructure through a combination of temporary measures, ongoing maintenance, and long-term improvements.
Overflow Response Plan
To reduce the frequency, duration and amount of sewer overflows the City has developed an Overflow Response Plan (ORP) to protect public health.
What you can expect to happen during heavy rains:
- Maintenance staff will be activated to immediately deploy to the location of the first point of overflow in the system.
- Nearby points of inflow to the stormwater system will be blocked and a containment area set up to vacuum sewer overflow before it reaches the lake or storm system.
- Access to any potential areas of overflow will be restricted to ensure public safety.
- Maintenance will notify property owners, business owners and residents of the overflow condition with either flyers or the City’s CodeRed emergency calling system.
- In the event of a large spill that can not be contained, sewage may flow into the lake at different locations. Please do not come into contact with any canal or lake waters until you are notified that it is safe to do so. Please prevent your pets from swimming in or drinking from these water bodies.
The City’s goal is to prevent spills whenever possible. If you see discolored water coming from a manhole, please call Public Works Maintenance (503) 635-0280 during business hours or LOCOM (503) 635-0238 for after hours response.
