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Private drainage system design engineers

The private companies on the list below perform analysis, engineering, and/or design of stormwater drainage systems. These firms have indicated an interest in appearing on this list by responding to Water and Land Resources Division notices.

We provide this list of drainage system design engineers for your convenience, but make no recommendation regarding these companies.

Drainage system design engineers list (515 KB)

This list may be expanded to include other interested licensed companies who ask to be included. If you are a company who would like to be added to the list, or you need to update information on the list, please contact us at stormwater@kingcounty.gov

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