There is no “Away”
What Really Happens to Our Food Waste—and Why Composting It Where We Live, Work, and Play Matters
We throw things away all day long.
The word is so ordinary that we rarely stop to consider what it means. A banana peel goes into a trash can. A student’s unfinished lunch is scraped from a plate. Coffee grounds leave the office kitchen. Food scraps disappear into a green bin behind a restaurant.
We place something in a container, someone empties the container, and the material vanishes from our lives.
But there is no away. There are only other places. And where our food goes next matters enormously.
Before Food Becomes Waste
I am in love with composting, but composting food waste is a last resort.
That may sound strange coming from a professional composter, but the distinction is essential. If food can still fulfill its purpose as food, we should do everything reasonable to let it do so. Save the other half of the sandwich. Bring the unfinished apple home in the reusable lunchbox. Cut away the browned portion the next morning and put the rest in a smoothie. Turn aging vegetables into soup. Freeze what you cannot use today. Share surplus food. Feed appropriate scraps to animals where appropriate. Buy thoughtfully, store food carefully, and see how little edible food you can waste.
Only then should we talk about composting.
To understand why, it helps to stop looking at the moment when food enters the trash and instead follow its journey backward.
Consider a tomato.
Before it appeared in a grocery store, restaurant, cafeteria, farmers market, or kitchen, it was a seed. Someone produced that seed and someone planted it. A farmer prepared the ground. The seed germinated, sent roots downward and a shoot upward, and began the slow work of becoming a plant. For weeks and then months, that plant needed sunlight, water, nutrients, biological activity, human knowledge, human attention, and time.
Depending on the farm and the crop, growing it may also have required irrigation pumps, tractors and other machinery, fuel, fertilizer or compost, pest management, electricity, and repeated trips through the field. Farmworkers tended the crop. Someone eventually harvested it.
And harvesting may have been only the beginning of its journey to us.
A farmer selling directly at a farmers market might harvest produce, pack it, drive it a relatively short distance, and sell it directly to the person who will eat it. Food moving through the larger commercial system can travel a much more elaborate path. It may be washed, sorted, graded, cooled, packed into boxes, stacked on pallets, moved through a packing house or distribution center, refrigerated, loaded onto trucks, transported hundreds or thousands of miles, unloaded, stored, displayed, purchased, transported again, refrigerated again, prepared and finally served.
At every stage there are people and resources: farmers, farmworkers, packers, drivers, warehouse employees, grocery workers, cooks, cafeteria staff and families; water, land, energy, machinery, packaging, refrigeration, roads and fuel.
And after all of that, we can throw the food away in seconds.
A farmer can spend months growing something that takes us three seconds to scrape into a trash can.
This is the part of food waste that statistics alone have trouble conveying. When edible food is discarded, the loss is not contained in the tomato, apple, salad, loaf of bread, or unfinished meal. We are also squandering much of what went into producing that food and bringing it within reach of our mouths.
The numbers, however, are staggering. EPA says 30 to 40 percent of the U.S. food supply is never eaten. And more than 85 percent of the greenhouse-gas emissions associated with food that ultimately ends up landfilled occur before disposal—during production, processing, transportation, distribution, and the other stages required to bring that food to us.
Think about the absurdity of that chain. We use resources to grow the food, resources to harvest it, resources to prepare and package it, resources to refrigerate and transport it, and human labor throughout the process. If we fail to eat it, we then use still more resources to collect it and haul it away as garbage.
Sometimes the material truly is unavoidable: the banana peel, avocado pit, eggshell, bone, or coffee grounds. Sometimes food has spoiled beyond recovery. But whenever edible food is discarded, the first failure has already happened before composting ever enters the discussion.
That is why the goal should never be to compost as much food as possible. The goal should be to waste as little food as possible—and then refuse to waste even the waste.
Once something truly can no longer nourish us, another question begins: what happens to it now?
When Food Becomes Garbage
Imagine an apple core dropping into a black trash bin.
It gets mixed with plastic packaging, broken objects, paper, and everything else we call garbage. A truck eventually collects it and carries it somewhere else. If its destination is a landfill, the apple core has entered a biological environment radically different from the one it would encounter in a properly managed compost pile.
Composting is an aerobic process: microorganisms decompose organic material in the presence of oxygen. A landfill, once waste is buried and compacted, develops oxygen-poor conditions. Organic matter still decomposes, but under those anaerobic conditions microorganisms generate methane.
Methane is a particularly powerful greenhouse gas. EPA puts its warming impact at about 28 times that of carbon dioxide over 100 years; over a 20-year period, estimates are about 81 to 83 times greater than carbon dioxide.
Food has an extraordinary role in the landfill problem. EPA says food makes up about 24 percent of the material in U.S. municipal solid-waste landfills, more than any other single material. Yet landfilled food is responsible for an estimated 58 percent of the methane from municipal solid-waste landfills that escapes into the atmosphere. Because food breaks down relatively quickly, much of that methane can be generated before landfill-gas collection systems are in place or able to capture it effectively.
EPA's current composting guidance offers another statistic that should stop us: in its 2019 national data, 66.2 million tons of wasted food were generated in the retail, food-service and residential sectors, and only about 5 percent was composted.
So we first invest extraordinary resources in producing food. If we fail to eat it and then bury it, we create another environmental problem out of what remains.
And we lose something valuable at the same time. An apple core contains carbon, nutrients, and organic matter that came from a living system. Once buried as garbage, those materials do not become compost that can be deliberately returned to productive soil. EPA explicitly identifies the loss of those nutrients and carbon as one of the costs of landfilling organic material.
We have taken something from a cycle and put it at the end of a line.
This is why we should be working to keep everything we reasonably can out of landfills. Reduce what we consume. Reuse what still has value. Recycle materials that can actually be recycled. Recover organic material. Reserve landfill disposal for materials that truly have no better destination.
And food is one of the clearest, most important, and most immediately actionable places to begin.
A banana peel does not need to be redesigned. An apple core does not require a new recycling technology. Coffee grounds do not have to wait for some future scientific breakthrough. The biological machinery capable of transforming these materials already exists.
It is decomposition.
Our task is to stop putting so much organic matter in the wrong place.
California: Millions of Tons We Already Know How to Recover
California provides a startling picture of the scale.
CalRecycle's 2021 statewide waste-characterization study found that California sent about 40 million tons of material to landfills in a single year. Approximately 11.3 million tons—28.4 percent of the entire disposed waste stream—were organic materials in the categories measured by the study. CalRecycle expressed the food portion another way: Californians were landfilling the equivalent of approximately 7.27 billion meals' worth of food every year.
California has recognized that burying organic material is not simply a garbage problem. It is a climate problem. SB 1383 set a target of reducing organic-waste disposal 75 percent below 2014 levels by 2025, while also setting a target that at least 20 percent of edible food that otherwise would have been disposed be recovered for people to eat.
That order matters: feed people first. Compost what genuinely remains.
The state's effort is enormous. By May 2026, CalRecycle reported that 97 percent of required communities had residential organics collection in place; it also reported that more than 1.08 billion unsold meals had been recovered since food-recovery rules began in 2022. California had 206 organic-waste processing facilities, with more under development.
For most Californians, this transformation of the waste system is represented by one very visible object: the green bin.
And the green bin is better than the black bin.
But it is a long way from the end of the story.
The Green Bin: Better Than the Black Bin, but Still “Away”
If our apple core goes into a green bin instead of the trash, an important thing has happened: it has a chance to be diverted from landfill.
That matters. In a state of nearly forty million people, centralized organics recovery is necessary. There are homes, restaurants, apartment buildings, businesses, and neighborhoods where composting at the point of generation is not currently practical. Large processing facilities can handle quantities of material that small systems never could.
But I think we make a mistake when we treat putting something into the green bin as if the environmental problem has been solved.
The apple core is still being sent away.
A collection vehicle must come get it. Depending on the system, the material may pass through transfer, sorting, or preprocessing before reaching an organics facility. At industrial scale, enormous quantities of food scraps, leaves, grass, branches, and other materials may be ground, moved, piled into windrows, turned, screened, and moved again with trucks, grinders, loaders, windrow turners, screens, and other machinery. The resulting material then has to go somewhere else to be used.
EPA's own modeling of centralized windrow composting accounts for carbon-dioxide emissions associated with collecting and transporting organic material and mechanically turning compost piles, as well as fugitive methane and nitrous-oxide emissions during decomposition. EPA also notes that those estimates do not include transportation of finished compost from the facility to its ultimate destination.
Then there is what happens inside the piles themselves.
The word composting can create an image of a perfectly aerobic biological process. At industrial scale, reality can be more complicated. CalRecycle states plainly that even well-managed compost piles can contain sections that go anaerobic, and associates those oxygen-depleted conditions with emissions of methane, ammonia, and other volatile organic compounds. The issue is significant enough that the South Coast Air Quality Management District has a rule specifically designed to reduce VOC and ammonia emissions from composting operations.
Process design makes a tremendous difference. In one CalRecycle-supported project comparing a solar-powered aerated static pile with a compost cap against conventional windrows made from the same feedstocks, the aerated system reduced VOC emissions by nearly 99 percent, significantly reduced ammonia and greenhouse-gas emissions, and reduced diesel use during pile construction and active-phase management by 87 percent. That is not evidence that all industrial composting is bad; it is evidence that the details of how organic material is processed matter enormously.
This is an important distinction. Sending organics to a large facility is not equivalent to sending them to landfill, and I would choose legitimate organics recovery over landfill. But the green bin is not an environmental magic trick. The trucks still travel. The equipment still operates. The piles still have to be managed. Emissions do not disappear simply because the container was green.
And there is another problem that matters enormously to me as a composter: once we place our material into that massive stream, we largely surrender control over what is mixed with it.
Diversion Is Not the Same Thing as Making Good Compost
This is where my standard becomes more demanding.
I do not believe that every material produced by an industrial organics-processing operation deserves to be treated as interchangeable with excellent compost simply because the word compost appears on a regulatory document, a municipal program, or a product label.
EPA defines compost as a biologically stable soil amendment produced through aerobic decomposition. It specifically says that material which has merely been ground, dehydrated, or liquefied is not compost, and that raw or partially decomposed material that remains biologically active is not finished compost either. EPA also identifies carbon-to-nitrogen ratio, moisture, oxygen, particle size, temperature, and feedstock quality as fundamental to the process.
For me, compost should be a mature, stable biological material made from appropriate feedstocks through a carefully managed process—a material I actively want to return to soil.
That standard begins with the ingredients.
When compost is made from a controlled stream, we can know what goes into it. We can prevent inappropriate materials from entering. We can see contamination and remove it before it becomes broken apart and distributed through thousands of pounds of material.
A municipal green-bin stream asks something very different. Thousands or millions of people contribute material, and people do not always sort correctly. Landscapers contribute material from properties with chemical histories the end user may know nothing about. Food and yard waste can arrive with packaging, produce stickers, plastic, glass, metal, and other unwanted material. CalRecycle describes plastic as an “emerging contaminant of high concern” for compost quality and notes that manual and mechanical sorting systems are used at processing facilities to remove obvious contaminants such as plastics, glass, cans, and bottles. It also acknowledges that this removal can be difficult, labor-intensive, and inconsistent.
California regulates physical contamination in finished compost precisely because contamination is real. State rules allow compost to contain up to 0.5 percent by dry weight of human-made physical contaminants larger than four millimeters, including glass, metal, and plastic, with a smaller limit for film plastic. CalRecycle separately acknowledges that very small pieces of plastic can end up in finished compost.
Half of one percent may sound tiny until you remember what the destination is.
Soil.
Once glass or plastic has been spread across soil, there is no screening machine waiting underneath the earth to retrieve it.
Chemical contamination is even more difficult because it may be invisible. EPA has documented concerns involving persistent herbicides entering compost feedstocks through green waste, manure, and hay. Some of these chemicals can remain phytotoxic at extremely low concentrations and injure sensitive plants including tomatoes, beans, lettuce, carrots, and potatoes. EPA notes that testing at concentrations low enough to detect the problem can require expensive, highly sensitive analytical equipment.
A screen can remove a sufficiently large shard of glass. It cannot screen a herbicide molecule out of finished material.
This is why I would not knowingly put ordinary mixed municipal green-bin material into my vegetable garden without knowing far more about its feedstocks, processing, testing, and quality. I would not even want an unknown product spread in the parkway in front of my house. When I add something to soil, I want to know what I am adding.
That is not an argument that every large composting facility produces bad compost. Some facilities can produce mature products and meet demanding specifications. The point is that the green bin itself gives the person who generated the food waste very little knowledge of or control over the quality of what eventually comes back out.
And quality varies. CalRecycle itself warns of “wide variables” when purchasing compost and recommends testing for applications where quality matters. Its guidance makes clear that maturity is not a cosmetic characteristic: unstable or immature compost can immobilize nitrogen, contain phytotoxic compounds, create odors, and in some circumstances harm plant growth.
This is also why I resist the way the word compost can be stretched by the waste-processing industry. Organic material that has been shredded into small pieces is not necessarily compost. Woody material that has been ground is mulch or feedstock, not automatically compost. Material that has heated but has not finished decomposing and curing is not finished compost. EPA itself draws these distinctions.
Processing organic waste and making excellent compost are not the same accomplishment.
One asks: How do we process this enormous amount of material so it does not go to landfill?
The other asks: What are we making, and do we actually want to put it back into the earth?
I believe the second question has to matter just as much as the first.
What Changes When the Food Waste Stays Here
Now imagine another path.
The apple core does not leave the school, synagogue, church, workplace, campus, community center, or other place where it was generated. Instead, it travels perhaps a few hundred feet.
It joins other food scraps and appropriate carbon-rich materials in a source-controlled composting system. We know what goes in because the material comes from our own community and because the feedstock stream can be actively managed. Contamination can be prevented rather than discovered after it has been mixed into thousands of tons of material. The biological conditions can be deliberately maintained.
The transformation happens where the material was generated.
Bacteria, fungi, and other organisms begin dismantling complex organic matter. Microbial metabolism produces heat. Recognizable food gradually loses its original form. Given the right feedstocks, physical structure, carbon-to-nitrogen balance, oxygen, moisture, temperature, time, and management, the process moves toward a stable, mature finished compost.
There is no collection truck carrying that food waste across town. No transfer facility is required for it. No industrial grinder is required to make it manageable. And when the compost is finished, another truck does not necessarily have to transport it back toward the community.
It can go into the garden twenty feet away. Around trees on the same campus. Into landscaping. Onto a nearby farm. Into a community garden. Into the hands of the people who participated in making it.
This creates a fundamentally different relationship with the material.
We care about what goes in because we intend to use what comes out. We maintain the process because the finished product is not an inconvenient byproduct we need to find a market for; it is the reason for composting in the first place.
We are not merely making waste disappear. We are making something we want back.
That distinction matters environmentally, biologically, and culturally.
When a school sends its food scraps away, the students' relationship with the material can end at the green bin. When it composts those scraps on campus, the food waste becomes something students can follow. They can see how much their community generates, feel the heat of active decomposition, watch recognizable food become unrecognizable, harvest the finished material, and return it to soil.
A congregation can know what happens to food scraps from its communal meals. Employees can see yesterday's coffee grounds become part of a living biological process. A community can weigh what it keeps out of dumpsters and then hold the result in its hands.
There is an enormous difference between being told, We diverted ten thousand pounds of organic material this year, and standing beside what those ten thousand pounds became.
One is an accounting category.
The other is ecological literacy.
Closing the Loop
“Closing the loop” is used so often in environmental language that it can become another slogan. Composting close to where we live, work, learn, worship, and play makes the phrase physical.
Food does not begin in a supermarket, cafeteria, refrigerator, or lunchbox. It begins in a living system.
Plants draw on sunlight, water, nutrients, soil or other growing media, and the activity of living organisms. Farmers and farmworkers participate in the process. Food eventually reaches us. We eat as much of it as we can and try not to waste what can still nourish someone.
But some organic material inevitably remains.
If we bury those remains in a landfill, we interrupt their return to productive biological use. If we send them to a centralized recovery system, we may keep them out of landfill, but the transformation happens beyond our sight and largely beyond our control.
When we compost that material where it is generated and return the finished compost to nearby soil, we can participate in the whole journey:
soil → food → us → unavoidable organic remains → decomposition → compost → soil
This is what fascinates me about composting. It is not fundamentally a technique for making garbage disappear.
It is a process of return.
Good finished compost can return organic matter and nutrients to soil, improve soil structure and water management, support biological diversity, and contribute to healthier and more resilient soils. EPA identifies these among the central benefits of compost use.
But local composting can also return something to us that is harder to quantify: an understanding of consequence.
Modern waste systems are extraordinarily good at making consequence invisible. A truck arrives, the bin becomes empty, and our problem appears to have been solved. That service is indispensable to modern life, but it can also train us to believe that responsibility ends at the edge of our property.
It doesn't.
There is no garbage truck capable of making matter cease to exist. There are only different destinations and different transformations.
Responsibility Has a Geography
None of this means every banana peel in America can or should be composted where it is eaten.
Some places lack space. Some lack an appropriate system. Some generate volumes that require larger infrastructure. Some communities do not have the knowledge, management, or long-term commitment required to compost responsibly. Apartment buildings, dense urban neighborhoods, restaurants, food processors, and many other generators will continue to depend on collection systems and regional facilities.
We need solutions at multiple scales.
When the practical choice is a black bin headed to landfill or a green bin headed to legitimate organics recovery, choose the green bin. Keeping organic matter out of landfills matters enormously.
But “better than the black bin” is too low a standard to end the conversation.
Where edible food can still be eaten, save it. Where surplus food can nourish someone, recover it. Where appropriate scraps can have another useful destination before composting, use it. And when organic material truly has reached the end of its usefulness as food, ask how close to its source it can responsibly complete its biological cycle.
Where we have the space, system, expertise, and commitment to compost that material well, why automatically put it on a truck?
Where we can control our own feedstocks, why surrender that control?
Where we can prevent contamination rather than attempt to extract it later, why not do so?
Where we can make mature compost we trust and return it to our own soil, why settle for merely getting our food waste off the property?
The question is not whether centralized organics infrastructure should exist. It must.
The more interesting question is: How much of this cycle actually needs to be centralized?
And perhaps an even more important one is: How much responsibility can we keep here?
The closer we bring consumption and consequence together, the harder it becomes to believe in away.
The tomato still goes somewhere. The apple core still becomes something. The coffee grounds still participate in a biological process whether we witness it or not.
We get to choose much of what happens next.
First, waste as little food as possible. Then take responsibility for what inevitably remains. Keep it out of the landfill whenever we can. Compost it well. Make something worth putting back into the earth. Return it to the living cycle from which our food came.
Not away.
Back.
Sources
U.S. Environmental Protection Agency, United States 2030 Food Loss and Waste Reduction Goal EPA source
U.S. Environmental Protection Agency, Quantifying Methane Emissions from Landfilled Food Waste EPA source
U.S. Environmental Protection Agency, Composting EPA source
U.S. Environmental Protection Agency, From Field to Bin: The Environmental Impacts of U.S. Food Waste Management Pathways EPA source
U.S. Environmental Protection Agency, Documentation for Greenhouse Gas Emission and Energy Factors Used in the Waste Reduction Model (WARM): Management Practices Chapters EPA source
U.S. Environmental Protection Agency, Emerging Issues in Food Waste Management: Persistent Chemical Contaminants EPA source
CalRecycle, 2021 Disposal Facility-Based Waste Characterization Study CalRecycle source
CalRecycle, California's Short-Lived Climate Pollutant Reduction Strategy / SB 1383 CalRecycle source
CalRecycle, Composting Emissions and Air Permits CalRecycle source
CalRecycle, Feedstock Profiles CalRecycle source
California Code of Regulations, Title 14, §17868.3.1, Physical Contamination Limits for Compost California regulations
South Coast Air Quality Management District, Rule 1133.3: Emission Reductions from Composting Operations South Coast AQMD source
