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Secondary Treatment Expansion Program

Capital Construction
Active
Aerial photo of wastewater treatment plant with four areas shaded in yellow on northern end of campus to indicate project area.
Environmental Services is making the largest investment in its North Portland wastewater treatment plant in 50 years. The Secondary Treatment Expansion Program (STEP) will expand, upgrade, and replace equipment and buildings that have been in service since the 1970s.
Contact

Debbie Caselton

Community Outreach

debbie.caselton@portlandoregon.gov
phone number503-823-2831
Oregon Relay Service711 Oregon Relay Service

Featured content

Aerial photo from 1974 of the Columbia Boulevard Wastewater Treatment Plant. About half the plant is outlined to show what areas are being impacted by the STEP program.
Information

About the Secondary Treatment Expansion Program

Information

About the STEP Labor-Management-Community Oversight Committee

Related offices, programs, and projects

Advisory Group

The STEP Labor-Management-Community Oversight Committee

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