Department of Ecology
Committees, Boards, and Workgroups

This page is run by the Washington Department of Ecology and is where Stormwater Work Group documents are available for public access. Documents older than two years are available upon request. For any inquiries, reach out to the SWG Coordinator.

About the Stormwater Work Group

The Stormwater Work Group (SWG) is a collaborative of people from local, state, federal, and Tribal governments, environmental and business organizations, public ports, and the agricultural sector. The purpose of the SWG is:

• To support efforts to restore the Salish Sea ecosystem and protect water quality and stream habitat throughout Washington
• To sustainably implement and oversee the Stormwater Action Monitoring (SAM) collective, a cooperative, permittee-driven stormwater monitoring and assessment program
• To provide actionable information for stormwater managers about reducing harm caused by stormwater through SAM, convening the SWG, and working collaboratively with partners

To learn more about the SWG and its objectives, view the Ecology SWG webpage or the 2024-2025 SWG Work Plan.

Upcoming Meetings

Meetings are usually held quarterly from 9am to 12pm on Microsoft Teams. Anyone who is interested in stormwater management in Washington is welcome to attend. You can join any or all of our email lists on your GovDelivery Subscriber Preferences Page.

February 11, 2026 – Quarterly SWG meeting

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Summary

May 13, 2026 – Quarterly SWG meeting 

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July 8, 2026 – Special SWG meeting 

Please join us for this special Stormwater Action Monitoring (SAM)-focused SWG meeting. At this meeting, SAM staff will be requesting input from SWG voting members on the Round 5 study solicitation process. Voting members are strongly encouraged to attend and all other attendees are optional. 

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Agenda
Summary

September 9, 2026 – Quarterly SWG meeting 

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November 18, 2026 – Quarterly SWG meeting

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Agenda
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Subgroups

SWG sponsors several subgroups focused on specific parts of the work plan. These subgroups meet at variable times. You can join any or all of our email lists on your GovDelivery Subscriber Preferences Page. New subgroup members are always welcome to join our effort!

SWG 6PPD Subgroup

The SWG 6PPD Subgroup is a space for sharing information about 6PPD, 6PPD-quinone, and tire wear particle pollution.

SAM Study Solicitation Subgroup

This subgroup is developing and implementing a process to select another round of effectiveness studies and source identification projects. The subgroup is meeting biweekly through summer 2025.

Status & Trends Scientist Subgroup

This subgroup provides guidance on the status and trends monitoring projects in the Puget Sound nearshore and small streams and Lower Columbia River Basin urban streams.

Pooled Resources Oversight Committee

Provides oversight on SAM projects' scopes, schedules, budgets, and SAM contracting decisions. This subgroup has a formal membership.

Charter and Workplan Subgroup

This is a new subgroup that will begin meeting in early 2026, with the goal of drafting the new SWG Charter and 2026-2027 Work Plan. 

Workgroup Members

There are 26 total voting member spots in the SWG, with voting members representing 8 different caucuses. The graphics below depict the 8 different caucuses of the SWG and the individuals in each caucus. The local caucus has 2 constituencies - Eastern and Western WA municipalities. If you are interested in being a voting member, or participating in your caucus’ meetings, reach out to the SWG Coordinator. 

Charter and Work Plan

The SWG operates under a Charter and Work Plan, which are linked below. In early 2026 the Charter and Work Plan Subgroup will begin working on drafts for a new Charter and  2026-2027 Work Plan.  

• SWG Charter
• SWG Bylaws
• SWG Work Plan 2024-2025

Contact Us

Please contact the SWG Coordinator Julian Carroll at julian.carroll@ecy.wa.gov if you have questions or feedback about the SWG.