Some plastic packaging is recyclable, but most of it isn’t. In the United States, only about 8.7 percent of plastic waste actually gets recycled, according to the EPA’s most recent data. The rest ends up in landfills or incinerators. Whether your specific piece of plastic packaging can be recycled depends on what type of plastic it’s made from, what shape it’s in, how clean it is, and what your local program accepts.
The Numbers on the Bottom Matter
That small triangle stamped on plastic packaging contains a number from 1 to 7. This is the resin identification code, and it tells you what kind of plastic you’re dealing with. As a general rule, the higher the number, the harder it is to recycle.
- #1 (PET or PETE) is the easiest to recycle and the most widely accepted. This includes water bottles, soda bottles, and many food containers. Most curbside programs take it.
- #2 (HDPE) is also widely accepted. Think milk jugs, detergent bottles, and household cleaner bottles. These are the opaque, sturdy containers.
- #3 (PVC) is significantly harder to recycle. You’ll find it in some shampoo bottles, detergent containers, and children’s toys. Most curbside programs won’t take it.
- #4 (LDPE) is the soft, flexible plastic used in grocery bags, bread bags, and shrink wrap. It can clog sorting machines at recycling facilities, so most curbside programs exclude it. Many grocery stores have drop-off bins for this type.
- #5 (PP) shows up in yogurt cups, straws, and takeout containers. It can be recycled, but acceptance varies by location.
- #6 (PS), also known as Styrofoam, is used in takeout containers and disposable cups. It is generally not accepted in recycling programs.
- #7 (Other) is a catch-all for everything else, including some bio-based plastics and polycarbonate. Recycling options are extremely limited.
In practice, plastics #1 and #2 are the only types you can reliably put in a curbside bin almost anywhere in the country. Everything else requires checking your local program’s guidelines.
Why So Much Packaging Can’t Be Recycled
The low recycling rate isn’t just about consumer behavior. Several types of packaging are physically difficult or impossible to process with current technology.
Multi-layer packaging is one of the biggest culprits. Chip bags, juice pouches, coffee bags, and many snack wrappers look like simple plastic, but they’re actually sandwiches of different materials: multiple plastic layers, aluminum foil, paper, adhesives, inks, and coatings. Mechanical recycling works by shredding, melting, and remolding a single type of plastic. When you have five or six materials fused together, there’s no practical way to separate them. These items belong in the trash.
Black plastic packaging is another problem. Most recycling facilities use infrared sensors to automatically sort plastics by type. Black plastic, typically colored with carbon black pigment, absorbs infrared light instead of reflecting it. The sensors can’t read it, so the sorting machines can’t identify it. Black plastic trays, containers, and lids often sail right past the sorters and end up in landfill even if they’re made from a technically recyclable resin.
Plastic Films and Bags Need Special Handling
Thin plastic films, including grocery bags, produce bags, zip-top storage bags, bubble wrap, and the shrink wrap around cases of water bottles, should never go in your curbside recycling bin. They wrap around the spinning equipment at sorting facilities, jamming machines and shutting down processing lines.
Many grocery and retail stores collect clean, dry plastic film for separate recycling. Acceptable items typically include retail bags, bread bags, newspaper sleeves, dry cleaning bags (without hangers), plastic shipping envelopes (without labels), and product wrap from paper towels or toilet paper packages. The key requirements are that everything must be clean and dry.
Not all film qualifies, though. Candy wrappers, chip bags, frozen food bags, pre-washed salad bags, and anything labeled compostable or degradable should stay out of film recycling drop-offs. These are either made from different materials or contain coatings that contaminate the batch.
Dirty Packaging Ruins Clean Recyclables
A peanut butter jar with a thick layer of residue inside or a pizza-grease-soaked container doesn’t just fail to get recycled. It can contaminate everything around it. Food residue causes mold, which eats away at paper and cardboard fibers in the same load, making them unusable. Greasy or moldy contamination spreads to otherwise clean bottles and cans, lowering the value of the entire batch. In some cases, a single contaminated item can degrade an entire truckload.
You don’t need to scrub containers until they sparkle, but a quick rinse to remove visible food is worth the few seconds. If something is heavily soiled and you can’t clean it easily, putting it in the trash is actually the better choice for the recycling system as a whole.
What Mechanical Recycling Actually Produces
When plastic packaging does get recycled, it goes through a process of sorting, washing, shredding, melting, and remolding into pellets. These pellets become raw material for new products. But mechanical recycling has a limitation: each time plastic is melted and reformed, the material degrades slightly. The recycled product generally isn’t as strong as the original, which is why a recycled water bottle often becomes carpet fiber or polyester clothing rather than another food-grade bottle.
This is fundamentally different from recycling glass or aluminum, which can be melted and reformed into identical products repeatedly. Plastic recycling is often “downcycling,” producing lower-grade materials that eventually reach a point where they can’t be recycled again.
Chemical Recycling as a Complement
A newer set of technologies, broadly called chemical recycling, takes a different approach. Instead of shredding and melting plastic, these processes use heat or chemical reactions to break plastic down into its basic chemical building blocks. Those building blocks can then be used to manufacture new plastic that’s identical in quality to virgin material.
The appeal is significant: chemical recycling can handle mixed plastics, multilayer packaging, and contaminated materials that mechanical recycling can’t touch. It could potentially process the packaging that currently has no recycling pathway, including textiles and healthcare plastics. These technologies are still scaling up commercially, though, and face questions about energy use and cost-effectiveness. They’re best understood as a complement to mechanical recycling, not a replacement.
How to Know What Your Program Accepts
Recycling rules vary dramatically by city and county. A yogurt cup that’s recyclable in one municipality might be trash in another, depending on the sorting equipment and end markets available locally. The most reliable step you can take is checking your specific hauler’s website or your city’s waste management page for an accepted-materials list.
When in doubt, keep it simple. Rigid plastic containers numbered #1 or #2 that are rinsed clean are almost universally accepted. Flexible films go to store drop-offs, not curbside bins. Anything multi-layered, black, foam, or heavily soiled is almost certainly trash. Putting non-recyclable items in the recycling bin, sometimes called “wish-cycling,” creates more problems than it solves by contaminating loads that would otherwise have been successfully processed.