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You are here: Home ›› Learn ›› Master Composter/Sustainability Steward Program ›› So You Want to Be a Master Composter/Sustainability Steward...

So You Want to Be a Master Composter/Sustainability Steward...

Interested in learning more about compost and teaching others? Become a Master Composter/Sustainability Steward! 

MCSB Wheelbarrow

Seattle residents are invited to apply to participate in the Master Composter/Sustainability Stewards course – a four week, nine session volunteer training program with a community outreach component. 

Each Master Composter/Sustainability Steward participates in 33 hours of classroom learning (including field trips) followed by 35 hours of volunteer outreach, which could include projects such as giving composting classes at schools and civic associations, helping schools and community gardens set up a compost system and staffing compost information tables at community events.

The training course covers the following topics:MCSBs at Cedar Grove - 2008 (380)

  • improving soil health and building soil life
  • understanding the small-scale composting process
  • using finished compost
  • waste prevention
  • sorting your compostables and recyclables
  • managing storm water and protecting water quality
  • teaching others about composting and resource conservation practices
Attend an upcoming volunteer orientation to learn more about all of Tilth Alliance's volunteer opportunities in Seattle and King County.

Class Dates & Times

The training is a four week (9 sessions) in-depth educational experience with four Wednesday evenings and five Saturday sessions.

  • Four Wednesdays, 7-9 p.m. on Apr. 4, 11, 18 and 25
  • Five Saturdays, 10 a.m.-3 p.m. on Mar. 31, April 7, 14, 21 and 28

Training Location

At the Good Shepherd Center, 4649 Sunnyside Ave N., Seattle, WA  98103.
Get directions
. There is also an off-site field trip.

Community Outreach

Community outreach is an essential component of the MC/SS program and a powerful form of environmental action! Following your MC/SS training, you will become part of a select team of Seattle residents empowered to share what you have learned with friends, neighbors and the community at large. We'll make sure you have the support you need to be successful at teaching others.  

Requirements for Applicants

  • RESIDENCY.  Only Seattle residents are eligible.
    Live outside of Seattle? Find out about our soil and water stewardship training offered on the Eastside and south King County.

Application will be posted in January!


The Master Composter/Sustainability Steward program is sponsored by Seattle Public Utilities.


Find out more about the Master Composter/Sustainability Stewards program or contact Cassie Whitebread: or (206) 633-0097.

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