Preview our new website

Environment & sustainability

Duwamish River bridge.

Sustainability makes tomorrow better than today

Sound Transit's mission supports communities, the environment and economy by providing affordable, environmentally-friendly public transit that connect residents to where they live, work and play.

Sustainability is part of daily business to enhance regional quality of life by:

  • Reducing car trips by carrying more riders
  • Supporting smart regional growth
  • Fostering transit-oriented development and improved transit access
  • Designing and building greener projects
  • Operating fleets and facilities more efficiently

Continually improving

Sound Transit maintains an internationally certified (ISO 14001) Environmental and Sustainability Management System to be accountable for controlling any environmental impacts, maintaining environmental compliance and demonstrating improvements in performance.


 2015 Sustainability Plan Update 


 Environmental Policy 

 Sustainability Board Resolution

 Sustainability Executive Order No. 1


PDF icon2017 Sustainability Progress Report

PDF icon2017 Sustainability Progress Report Appendices

 Sustainability Plan 3-Year Progress Report

PDF icon2017 Year in Review


PDF icon2018 Sustainability Targets


Perry Weinberg
Director, Office of Environmental Affairs and Sustainability and Senior Legal Counsel, 206-689-4931

More information on Sound Transit's Sustainability Initiative or ESMS: