Tour the Columbia Boulevard Wastewater Treatment Plant

Service
Tours of the Columbia Boulevard Wastewater Treatment Plant are currently on hold.

The Columbia Boulevard Wastewater Treatment Plant, Oregon's largest wastewater treatment plant, is currently undergoing a large expansion and upgrade. Currently, we are unable to offer tours until after the construction is completed in 2024 because large areas of the plant are construction zones.

Learn more about the Secondary Treatment Expansion Program — the largest investment in the plant in 50 years —or find information on portland.gov about:

Location