Debris and other obstructions sometimes block sewer lines and can cause sewage releases. Information on current sanitary sewer overflows is posted on this page.
Currently there is no sanitary sewer overflow (SSO) advisory in effect.
If a sanitary sewer overflows, Environmental Services issues an advisory to Portland media and places warning signs at the point of the overflow. If sewage overflows in a river or stream, Environmental Services posts warning signs at public access points downstream.
The advisory remains in effect and the signs remain in place for 48 hours after the overflow stops.