Seattle Public Utilities Mami Hara, General Manager/CEO

Master Composter / Soil Builder Volunteer Program

The Master Composter/Soil Builder (MC/SB) volunteer program is a key partner in Seattle’s waste reduction and recycling efforts. Seattle residents learn how to:

  • Build worm bins
  • Recycle food and yard waste at their homes
  • Build healthy urban soils
  • Support thriving landscapes throughout the city

Learn how to become a Master Composter/Soil Builder from the Tilth Alliance.

Master Composter/Soil Builder training is part of the Natural Soil Building program, a partnership between Seattle Public Utilities and Tilth Alliance.