A key strategy that contributes to Seattle’s carbon neutrality work was approved by the Council in 2007, when my Zero Waste Initiative was adopted as City policy.  The things we throw away not only generate carbon as they decompose — they also carry the embedded carbon that was used in creating them.  Zero Waste is a strategy that addresses both of those aspects.  And the evidence is now in:  we are succeeding in making real change happen.

Seattle has a long history of addressing the environmental issues around waste disposal — and in the 1980’s we embraced a commitment to recycling a minimum of 60% of our solid waste.  However, twenty years later, recycling peaked at 43%.  When I reviewed our policies in 2006-2007, I concluded that the current strategy promised only incremental improvements and a long-term commitment to generate massive quantities of garbage and ship it to a landfill.  Seattle would continue to send a mile-long train of garbage to be buried in eastern Oregon — EVERY DAY.

That meant that we would continue to consume resources at an expanding rate.  It meant that we would keep burying toxic substances and valuable materials.  And it meant that we would keep generating greenhouse gases from landfills that contribute to global warming.

The Zero Waste Strategy set a new goal:  striving to reduce our waste stream to the minimum possible by making cradle to cradle responsibility the cornerstone for how we treat products.  The cradle to cradle paradigm asserts that the materials we consume should continue to circulate in the production of new products, either as organic matter destined for compost or as mineral or synthetic compounds that can be transformed into the building blocks of other products.  That puts waste reduction and recycling in the driver’s seat, rather than in the caboose of the garbage train.

Key components of the Zero Waste strategy:

  • Expand recycling efforts by creating incentives for product stewardship.  The principle of product stewardship (also called extended producer responsibility) puts the responsibility for recycling and disposal on the manufacturers, thus giving them a financial incentive to extend the life of their products by using materials that can be reused or recycled.
  • Collect food waste as part of mandatory residential weekly organics collection.
  • Tailor similar approaches to commercial accounts, emphasizing programs like food waste collection from restaurants and paper recycling from offices.
  • Decrease waste production by banning some products from use in the City (such as Styrofoam and plastic bags), and working with businesses to develop take back programs for products like pharmaceuticals, paint, and electronic products.
  • Design solid waste facilities and contracts to emphasize flexibility for better waste prevention, recycling, and disposal systems in the future, support full recycling of Construction and Demolition Waste, and plan for major reductions in the amount of solid waste to be transferred and disposed of.

The complete set of policies can be found by going to, clicking on research city laws, and reviewing Resolution 30990.

Implementation of Zero Waste has begun with mandatory residential organics collection, new policies around construction and demolition waste, bans on styrofoam and other non-recyclable food service products, expanded product stewardship activities, and programs to promote additional recycling and composting in restaurants and other businesses.

In the near future, the City will add mandatory compostable service for multi-family buildings, move to restrict the delivery of unwanted phone books, start a pilot program for collecting garbage every other week rather than weekly, and continue work to expand product stewardship and business recycling.  We are likely to also consider a ban on plastic bags (an alternative to the bag fee, which was repealed in a referendum financed by $1.5 million from the plastics industry), as well as limits or recycling requirements for other plastics, such as commercial plastic film used to wrap pallets.

The philosophy of Zero Waste includes adding a new indicator of our progress.  While we will still measure our recycling rate, our new goal is to actually reduce the amount of waste that the City sends to the landfill.  Resolution 30990 set as City policy that we will not dispose of any more total solid waste in future years than went to the landfill in 2006, 438,000 tons, and that for the next five years, the City will reduce the amount of solid waste disposed by at least 1% per year.

We have overachieved.  Waste sent to the landfill was cut by 10.2% in 2008 and 10.9% more in 2009, to a total of 352,000 tons.  While some of this decrease could be the result of the economic downturn (garbage generation traditionally decreases during recessions), probably at least half of it is the result of the actions taken through the Zero Waste Initiative.  And there is a lot more action to come.

The Zero Waste strategy built on Seattle’s success in water and energy conservation to create a new way of thinking about products and waste disposal.  As we develop more sophisticated ways to make the cradle to cradle vision real, we will continue to make real progress towards our climate action goals.