The seven-month dig was part of a $58 million wastewater treatment infrastructure project in Clackamas County.

Google ‘Willamette River quality’ and come down and observe ... checking out some of the best urban swim spots in Portland. First up was Sellwood Riverfront Park. “This is probably Portland ...

Portland's sewer system combines sewage and runoff into the same pipes. Sometimes heavy rains cause those pipes to overflow. But a sewer overhaul 14 years ago has drastically reduced this pollution.