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Capital improvement projects at South Treatment Plant focus on protecting ratepayer investments through improving system reliability, protecting worker safety and the environment, and increasing efficiency.


  • This project will improve the gas scrubbing system, provide reliable heating for South Treatment Plant’s treatment processes, and produce more renewable energy.
  • Work will occur through fall of 2022.
  • This project will make seismic retrofits at the influent pump station building to ensure that the facility operates in the event of a major seismic event.
  • Work will occur through 2026.
  • This project will modify and refurbish the treatment plant’s odor control system and improve performance and permit compliance.
  • Work will occur through 2022.
  • This project will remove an existing generator that has reached the end of its useful life and replace it with a new equivalent size generator to run essential services in the grit classifier building.
  • Work will occur through 2023.
  • This project will upgrade five existing fire alarm control panels that are aging and need up be upgraded in order to be compliant with the Renton Fire Department regulations.
  • Work will occur through 2022.
Contact us

For more information about capital projects at South Treatment Plant, please contact Eunice Lee, Community Services,, 206-263-1614.

24 hour emergency and odor reporting:   206-263-1760
Administration:  206-263-1810

1200 Monster Road S.W.
Renton, WA 98057

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