Skip to Main Content View Text-Only

To improve security, on Feb. 11th the city will begin disabling TLS 1.0 on our websites. This change should not impact you unless you are using an old browser. More information

Close

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

Sewer Overflows

Environmental Services posts combined sewer overflow (CSO)
and sanitary sewer overflow (SSO) advisories on this page.

Portland waterfront


Combined Sewer Overflows (CSOs)

Updates on Combined Sewer Overflows (CSOs)

Sanitary Sewer Overflows (SSOs)

Updates on Sanitary Sewer Overflows (SSOs)