Clean Water Ambassadors Internship

The Mountains to Sound Greenway Trust partners with King County Wastewater Treatment Division offer a paid internship experience for a cohort of high school interns to learn about local environmental issues, solutions, and careers focused on clean water in our region.

WHO: High school youth at least 16 years old. We strongly encourage applicants who are new to exploring environmental topics and/or who are from communities that are underrepresented in environmental careers.

WHEN: July 7 – August 7, 2025 (Monday-Friday, approx. 27 hours/week).

WHERE: Interns meet in downtown Seattle on Monday-Friday, at the Stadium Light Rail Station or King Street Center.

BENEFITS: Earn $20 per hour.

SKILL DEVELOPMENT:

  • Improve communication skills by teaching students and giving a final presentation.
  • Learn about clean water topics, including environmental and social justice issues, through field trips and workshops.
  • Explore environmental careers by interviewing professionals.
How to Apply:

Applications for 2025 are now closed.

Application Tips:

  • You DO NOT need a cover letter or resume. We will be looking closely at your answers to the supplemental questions.
  • For questions #5-9, please provide detailed responses. Your answers should be more than one sentence so we can get a good sense of your interest and reason for applying.
  • Make it clear in your responses that you read the job description and understand the goals of the program.

Interview Process:

  • We will be selecting approximately 30 applicants to move on to the interview round. This will give us a chance to get to know each applicant a little better.
  • The interview conversation will be held online, one-on-one, and conducted by an internship staff member.
  • The entire interview will take approximately 30 minutes.
  • There will be three questions that only require very short answers, and seven questions will ask you to elaborate and share your thoughts.

Eligibility:

Must have current and valid identification, and proof of eligibility for employment in the U.S.

Learn More:

Read about former Clean Water Ambassadors’ career journeys in this blog: “Kickstart Your Career with Tips From Young Leaders Who Are Working to Make the World a Better Place.”

Questions? Check out our Frequently Asked Questions or email education@mtsgreenway.org.