Report a spill

The public, agency staff, and contractors should use this page to report unplanned releases of materials on or near the highway and WSDOT-operated properties. 

Reporting procedures

Report spills and illicit discharges that are not comprised entirely of stormwater on or along state highways or WSDOT properties, as well as connections to our stormwater drainage system, to the appropriate authorities listed below.

WSDOT staff and contractors

WSDOT staff and Contractors must follow the procedures on this page and Ecology’s Report a spill of oil or hazardous materials website to make sure spills are properly reported. All hazardous materials spills must be reported right away.

Emergency or hazardous spills

Call 911 for spills on state highways or WSDOT properties that may impact the safety of the traveling public or the environment. These could include spills related to vehicle collisions, fires, unknown chemicals, or explosive hazards. Also report to the Department of Ecology (Ecology).

Spills in water

If you spill or observe oil or hazardous substances in water, immediately call both

  • 1-800-258-5990: Washington Department of Emergency Management
  • 1-800-424-8802: U.S. Coast Guard National Response Center

Non-emergency spills

Spills and illicit connections that could reach WSDOT’s stormwater drainage system

Non-emergency spills and illegal discharges that could reach WSDOT’s stormwater drainage system should be reported to the closest Department of Ecology office via their website or at one of the numbers below.

  • Central Washington: 509-575-2490
  • Counties: Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, and Yakima
  • Eastern Washington: 509-329-3400
  • Counties: Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, and Whitman
  • Northwest Washington: 425-649-7000
  • Counties: Island, King, Kitsap, San Juan, Skagit, Snohomish, and Whatcom
  • Southwest Washington: 360-407-6300
  • Counties: Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Mason, Lewis, Pacific, Pierce, Skamania, Thurston, and Wahkiakum

Illicit connections or non-emergency spills and illicit discharges that do not reach WSDOT’s stormwater drainage system

Call the WSDOT Region Illicit Discharge Detection and Elimination (IDDE) contact listed below. Contacts are available during normal business hours only. Leave a message if calling outside of business hours.

WSDOT regions/IDDE contact phone numbers:

  • Eastern Region: 509-323-8402
  • Olympic Region: 360-570-6748
  • North Central Region: 509-667-2989
  • Northwest Region: 206-440-4900
  • South Central Region: 509-577-1759
  • Southwest Region: 360-905-2015

8,683 animals crossed the Snoqualmie Pass East Project area

as recorded by WSDOT and partners in 2020 and 2021.

46% increase in Amtrak Cascades ridership to 251,000 passengers

in 2021 compared to 172,000 in 2020.

Nine wetland and stream mitigation sites across 32.7 acres added

to our monitoring program in 2021 to help offset climate change impacts.