Stormwater drainage assistance

Information about stormwater drainage assistance in King County.

Report a flooding, drainage, or water quality problem in unincorporated King County.

Contact information for local cities and counties to report drainage and water quality problems

Resources for maintaining privately-owned stormwater facilities.

Private companies that perform analysis, engineering, and/or design of stormwater drainage systems.

Private companies that perform cleaning and maintenance services on stormwater drainage systems.

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