6 thoughts on “Columbia Sewage Treatment Plant, 1954

  1. 5001 N Columbia Blvd. Portland first began treating its wastewater in 1952. Before then the city’s industrial discharges, agricultural waste and sewage emptied directly into the Willamette River and Columbia Slough. The water became dangerously contaminated. When Portland citizens realized it would take new infrastructure to help clean up the problem, they approved a $12 million bond issue to build a wastewater treatment facility.

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