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The firms below perform drainage system cleaning and maintenance services. These firms have indicated an interest in appearing on this list by responding to Water and Land Resources Division notices.

  • System maintenance contractors list (Acrobat pdf)
  • King County provides this list for your convenience but makes no recommendation regarding these firms. Additional firms may be found in the yellow pages under "Drainage Contractors."

    Note: Property owners are encouraged to obtain at least three bids for each job, check references, and inspect the work that has been done to ensure compliance with your direction.

    If you are a firm who would like to be added to the list, or you need to update information on the list, please contact Will Peddy, Engineering Technician.

    For questions about the stormwater website, please contact Brian Sleight, Supervising Engineer, King County Stormwater Services Section.