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High school internships

Response to COVID-19 Outbreak

King County Wastewater and Mountains to Sound Greenway Trust typically offer the Clean Water Ambassadors Internship Program each summer - a paid internship program for high school youth. Unfortunately, due to the COVID-19 pandemic and its effects on the economy, we’re unable to hire a paid cohort of interns this summer. However, we’re excited to announce that we’re offering a free online program in July that doesn’t require a hiring process. This Clean Water Ambassadors Certificate Program is open to all high school age youth in the King County region!

Clean Water Ambassadors Certificate Program for High School-Aged Youth

WHAT: Online program for high school-aged youth to learn how to help protect clean water in our region.

WHEN: July 7-31, Tues-Fri, 1-3pm. Orientation on July 6, 1-3pm.


  • Learn about water systems, salmon streams, sustainability, and local issues.
  • Practice ways to take action in your community
  • Meet with local environmental professionals to learn about careers in clean water.
  • Earn a certificate if you attend at least 28 of the 34-hour program.

Interested youth can register here. We strongly encourage participants who are new to exploring environmental topics and are underrepresented in environmental careers.


interns at treatment plant

College summer and year-round internships

King County Wastewater Treatment Division provides internships for fully enrolled undergraduate and graduate students that provide experiences in a number of environmental fields.

For more information:

Learn more about internship opportunities with WTD.

interns at computer

Career opportunity events and career fairs

Join the King County Wastewater Treatment Division for job-shadowing events, which explore careers in clean water. Go to our events page for more information and to register.

King County staff also attend and speak at career-exposure events and career fairs for high school, community college, and university students to increase awareness about the wide variety of jobs in wastewater.

To schedule a staff member for your event, contact:

career fair activity