Wastewater Division


Rick Brown at WorkProtect public safety and provide wastewater utility to Oregon City by maintaining and improving the wastewater collection system, including pump stations, mainlines, laterals and manholes. Respond to emergency system bypasses to reduce hazards to human health and the environment. Implement best management practices while performing operations to protect the surrounding environment.


  • Wastewater DivisionProtects public health by complying with sewage collection system environmental standards
  • Maintains, plans, and improves the wastewater collection system, including 14 pump stations, 138 miles of pipelines, and over 3,400 manholes
  • Implements best management practices while performing operations and constructing improvements to protect the surrounding environment

In addition to maintaining the current collection system, the Sewer Division helps Engineering Services provide capital improvements that replace deficient pipes and equipment and add system capacity or increase level of service to accommodate a growing population. The Wastewater Master Plan and its CIP identifies and prioritizes needs and construction projects that are funded by sewer utility fees and System Development Charges (SDCs) (collected when building permits are issued). Projects are implemented that protect natural resources and complement the surrounding environment.

Oregon City's collection system transports our wastewater to the Tri-City Service District water pollution control facility (treatment plant) that is operated by Clackamas County Water Environmental Services (WES).

System Details

  • 2023-25 biennium total wastewater budget: $49.5M
  • Class 3 sewer collection system
  • 11,263 active utility accounts
  • Tri-City Wastewater Treatment Plant (County district)
  • Separated sewer system (not combined sewer)
  • 14 pump stations
  • 138 miles of pipe (gravity and force mains)
  • 3,455 sewer manholes (264 Tri-City)
  • 44 STEP systems (including private)

Key Programs

  • System cleaning program
  • TV inspection program
  • Pump station replacement program
  • Pipeline replacement and upgrade program
  • Pump station maintenance
  • GBA asset management