On Friday night, November 22, City crews responded to reports of a sewage release from a maintenance hole near 2121 SW Multnomah Blvd. Some of that release may have reached Tryon Creek. As a precaution, the public is advised to avoid the creek downstream from this location. 

At approximately 9 p.m. on November 22, City crews responded to reports of a sewage release from a maintenance hole near 2121 SW Multnomah Blvd. Crews identified the sewage release and determined that some of it had entered a storm drain that leads to Tryon Creek.

The overflow has been stopped, and crews estimate a few thousand gallons overflowed from the maintenance hole. This advisory will be updated with a more accurate volume estimate once it is available.

City maintenance crews have placed warning signs near the spill. As a precaution, people and pets are advised to avoid contact with Tryon Creek downstream of 2121 SW Multnomah Blvd through 10 p.m. on November 24 because of the possibility of increased bacteria in the water.

The cause of the overflow is being investigated. 

Environmental Services reminds the public that most sewage releases are preventable. The most common causes of sewage overflows are pipes clogged with household debris, such as cooking grease that are sent down kitchen drains or wet wipes that are flushed. Both belong in the trash, not down the drain. Tree roots are another common cause. 

Environmental Services advises the public to follow these tips to prevent clogs and overflows in homes and businesses and to prevent sewage releases:

• Only flush human waste and toilet paper (wet wipes are NOT flushable).
• Never pour grease down drains: Collect grease, oil, and fat in a can and then into the garbage. Grease that is liquid when poured down drains will become solid once in pipes.
• Don’t put anything down storm drains, which are intended for rainfall only. 
• If you experience or see a sewer overflow, contact the City’s hotline at any hour of the day at 503-823-1700.  

About Environmental Services
Environmental Services - the City of Portland’s sewer and stormwater utility - protects public health and the environment by collecting and recovering resources from the city’s wastewater, managing stormwater, and restoring and protecting Portland’s rivers, streams, and watersheds.