At approximately 11 a.m., City crews responded to a sewage overflow from multiple maintenance holes connected to a City sewer main on SE Henderson Drive.
The overflow was stopped at 1 p.m., and crews estimate 1,600 gallons of sewage overflowed. Some of the overflow reached a ravine and an unnamed tributary that leads to Johnson Creek.
As a precaution, the public is advised to avoid contact with the tributary – the ravine between north of SE Henderson Dr and south of SE Brookside Dr - and Johnson Creek west of SE 122nd Avenue through 1 p.m. on May 7 due to the possibility of increased bacteria in the water. Warning signs have been posted, and the public is advised to follow all posted signs in the area.
Help prevent sewage releases
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 is 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.